1   /* Copyright 2002-2024 CS GROUP
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3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
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11   * Unless required by applicable law or agreed to in writing, software
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14   * See the License for the specific language governing permissions and
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17  package org.orekit.models.earth.atmosphere;
18  
19  import org.hipparchus.CalculusFieldElement;
20  import org.hipparchus.Field;
21  import org.hipparchus.exception.LocalizedCoreFormats;
22  import org.hipparchus.geometry.euclidean.threed.FieldVector3D;
23  import org.hipparchus.geometry.euclidean.threed.Vector3D;
24  import org.hipparchus.util.FastMath;
25  import org.hipparchus.util.FieldSinCos;
26  import org.hipparchus.util.MathArrays;
27  import org.hipparchus.util.SinCos;
28  import org.orekit.annotation.DefaultDataContext;
29  import org.orekit.bodies.BodyShape;
30  import org.orekit.bodies.FieldGeodeticPoint;
31  import org.orekit.bodies.GeodeticPoint;
32  import org.orekit.data.DataContext;
33  import org.orekit.errors.OrekitException;
34  import org.orekit.errors.OrekitMessages;
35  import org.orekit.frames.Frame;
36  import org.orekit.time.AbsoluteDate;
37  import org.orekit.time.DateTimeComponents;
38  import org.orekit.time.FieldAbsoluteDate;
39  import org.orekit.time.TimeComponents;
40  import org.orekit.time.TimeScale;
41  import org.orekit.utils.IERSConventions;
42  import org.orekit.utils.PVCoordinatesProvider;
43  
44  import java.util.Arrays;
45  
46  
47  /** This class implements the mathematical representation of the 2001
48   *  Naval Research Laboratory Mass Spectrometer and Incoherent Scatter
49   *  Radar Exosphere (NRLMSISE-00) of the MSIS® class model.
50   *  <p>
51   *  NRLMSISE-00 calculates the neutral atmosphere empirical model from the surface
52   *  to lower exosphere (0 to 1000 km) and provides:
53   *  <ul>
54   *  <li>Exospheric Temperature above Input Position (K)</li>
55   *  <li>Local Temperature at Input Position (K)</li>
56   *  <li>Total Mass-Density at Input Position (kg/m³)</li>
57   *  <li>Partial Densities at Input Position (1/m³) for:
58   *  <ul>
59   *      <li>He,</li>
60   *      <li>H,</li>
61   *      <li>N,</li>
62   *      <li>O,</li>
63   *      <li>Ar,</li>
64   *      <li>N2,</li>
65   *      <li>O2,</li>
66   *      <li>anomalous oxygen.</li>
67   *  </ul>
68   *  </li>
69   *  </ul>
70   *  <p>
71   *  The model needs geographical and time information to compute general values,
72   *  but also needs space weather data:
73   *  <ul>
74   *  <li>mean and daily solar flux,</li>
75   *  <li>geomagnetic indices.</li>
76   *  </ul>
77   *  <p>
78   *  Switches can be used to turn on and off particular variations:<br>
79   *  0 is off, 1 is on, and 2 is main effects off but cross terms on.<br>
80   *  The standard value is 1 for all the 23 available switches.<br>
81   *  Function of each switch according to its number:
82   *  <ul>
83   *  <li>#1 - F10.7 effect on mean</li>
84   *  <li>#2 - Independent of time</li>
85   *  <li>#3 - Symmetrical annual</li>
86   *  <li>#4 - Symmetrical semiannual</li>
87   *  <li>#5 - Asymmetrical annual</li>
88   *  <li>#6 - Asymmetrical semiannual</li>
89   *  <li>#7 - Diurnal</li>
90   *  <li>#8 - Semidiurnal</li>
91   *  <li>#9 - Daily Ap [**]</li>
92   *  <li>#10 - All UT, longitudinal effects</li>
93   *  <li>#11 - Longitudinal</li>
94   *  <li>#12 - UT and mixed UT, longitudinal</li>
95   *  <li>#13 - Mixed AP, UT, longitudinal</li>
96   *  <li>#14 - Terdiurnal</li>
97   *  <li>#15 - Departures from diffusive equilibrium</li>
98   *  <li>#16 - All exospheric temperature variations</li>
99   *  <li>#17 - All variations from 120 km temperature (TLB)</li>
100  *  <li>#18 - All lower thermosphere (TN1) temperature variations</li>
101  *  <li>#19 - All 120 km gradient (S) variations</li>
102  *  <li>#20 - All upper stratosphere (TN2) temperature variations</li>
103  *  <li>#21 - All variations from 120 km values (ZLB)</li>
104  *  <li>#22 - All lower mesosphere temperature (TN3) variations</li>
105  *  <li>#23 - Turbopause scale height variations</li>
106  *  </ul>
107  *  [**] Switch #9 is a bit specific:
108  *  <ul>
109  *  <li>set to  1, the daily Ap only is used (first element of ap array),</li>
110  *  <li>set to -1, the entire array of ap is used, including 3 hr ap indices.</li>
111  *  </ul>
112  *  <p>
113  *  The NRLMSISE-00 model was developed by Mike Picone, Alan Hedin, and Doug Drob.<br>
114  *  They also wrote a NRLMSISE-00 distribution package in FORTRAN available at:<br>
115  *  ftp://hanna.ccmc.gsfc.nasa.gov/pub/modelweb/atmospheric/msis/nrlmsise00/<br>
116  *  <br>
117  *  Dominik Brodowski implemented a C version of the NRLMSISE-00 model available at:<br>
118  *  http://www.brodo.de/space/nrlmsise/index.html
119  *  <p>
120  *  Instances of this class are immutable.
121  *  </p>
122  *
123  *  @author Mike Picone &amp; al (Naval Research Laboratory), 2001: FORTRAN routine
124  *  @author Dominik Brodowski, 2004: C routine
125  *  @author Pascal Parraud, 2016: Java translation
126  *  @since 8.1
127  */
128 public class NRLMSISE00 implements Atmosphere {
129 
130     /** Serializable UID. */
131     private static final long serialVersionUID = -7923498628122574334L;
132 
133     // Constants
134 
135     /** Identifier for helium density. */
136     private static final int HELIUM = 0;
137 
138     /** Identifier for atomic oxygen density. */
139     private static final int ATOMIC_OXYGEN = 1;
140 
141     /** Identifier for molecular nitrogen density. */
142     private static final int MOLECULAR_NITROGEN = 2;
143 
144     /** Identifier for molecular oxygen density. */
145     private static final int MOLECULAR_OXYGEN = 3;
146 
147     /** Identifier for argon density. */
148     private static final int ARGON = 4;
149 
150     /** Identifier for atomic nitrogen density. */
151     private static final int TOTAL_MASS = 5;
152 
153     /** Identifier for hydrogen density. */
154     private static final int HYDROGEN = 6;
155 
156     /** Identifier for atomic nitrogen density. */
157     private static final int ATOMIC_NITROGEN = 7;
158 
159     /** Identifier for anomalous oxygen density. */
160     private static final int ANOMALOUS_OXYGEN = 8;
161 
162     /** Identifier for exospheric temperature. */
163     private static final int EXOSPHERIC = 0;
164 
165     /** Identifier for temperature at altitude. */
166     private static final int ALTITUDE = 1;
167 
168     // CONVERSION CONSTANTS
169 
170     /** Conversion from degree to radian. */
171     private static final double DEG_TO_RAD = 1.74533e-2;
172 
173     /** Conversion from day to radian. */
174     private static final double DAY_TO_RAD = 1.72142e-2;
175 
176     /** Conversion from hour to radian. */
177     private static final double HOUR_TO_RAD = 0.2618;
178 
179     /** Conversion from second to radian. */
180     private static final double SEC_TO_RAD = 7.2722e-5;
181 
182     // EARTH GEOPHYSICAL CONSTANTS
183 
184     /** Reference latitude (°). */
185     private static final double LAT_REF = 45.;
186 
187     /** Reference gravity on Earth surface at reference latitude (cm/s2). */
188     private static final double G_REF = 980.616;
189 
190     // CHEMICAL CONSTANTS
191 
192     /** Unified atomic mass unit (kg). */
193     private static final double AMU = 1.66e-27;
194 
195     /** Gas constant (inverse of). */
196     private static final double R_GAS = 831.4;
197 
198     /** Hydrogen atomic mass. */
199     private static final double H_MASS = 1.;
200 
201     /** Helium atomic mass. */
202     private static final double HE_MASS = 4.;
203 
204     /** Nitrogen atomic mass. */
205     private static final double N_MASS = 14.;
206 
207     /** N2 molecular mass. */
208     private static final double N2_MASS = 2. * N_MASS;
209 
210     /** Oxygen atomic mass. */
211     private static final double O_MASS = 16.;
212 
213     /** O2 molecular mass. */
214     private static final double O2_MASS = 2. * O_MASS;
215 
216     /** Argon atomic mass. */
217     private static final double AR_MASS = 40.;
218 
219     // NRL MSISE 2000 SPECIFIC CONSTANTS
220 
221     /** Reference average flux. */
222     private static final double FLUX_REF = 150.;
223 
224     /** Array of altitudes #1. */
225     private static final double[] ZN1 = {123.435, 110.0, 100.0, 90.0, 72.5};
226 
227     /** Array of altitudes #2. */
228     private static final double[] ZN2 = {72.5, 55.0, 45.0, 32.5};
229 
230     /** Array of altitudes #3. */
231     private static final double[] ZN3 = {32.5, 20.0, 15.0, 10.0, 0.0};
232 
233     /** Mix altitude (km). */
234     private static final double ZMIX = 62.5;
235 
236     /** NRLMSISE-00 data: temperature pt[150]. */
237     private static final double[] PT = {
238         9.86573e-01, 1.62228e-02, 1.55270e-02, -1.04323e-01, -3.75801e-03,
239         -1.18538e-03, -1.24043e-01, 4.56820e-03, 8.76018e-03, -1.36235e-01,
240         -3.52427e-02, 8.84181e-03, -5.92127e-03, -8.61650e+00, 0.00000e+00,
241         1.28492e-02, 0.00000e+00, 1.30096e+02, 1.04567e-02, 1.65686e-03,
242         -5.53887e-06, 2.97810e-03, 0.00000e+00, 5.13122e-03, 8.66784e-02,
243         1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, -7.27026e-06,
244         0.00000e+00, 6.74494e+00, 4.93933e-03, 2.21656e-03, 2.50802e-03,
245         0.00000e+00, 0.00000e+00, -2.08841e-02, -1.79873e+00, 1.45103e-03,
246         2.81769e-04, -1.44703e-03, -5.16394e-05, 8.47001e-02, 1.70147e-01,
247         5.72562e-03, 5.07493e-05, 4.36148e-03, 1.17863e-04, 4.74364e-03,
248         6.61278e-03, 4.34292e-05, 1.44373e-03, 2.41470e-05, 2.84426e-03,
249         8.56560e-04, 2.04028e-03, 0.00000e+00, -3.15994e+03, -2.46423e-03,
250         1.13843e-03, 4.20512e-04, 0.00000e+00, -9.77214e+01, 6.77794e-03,
251         5.27499e-03, 1.14936e-03, 0.00000e+00, -6.61311e-03, -1.84255e-02,
252         -1.96259e-02, 2.98618e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
253         6.44574e+02, 8.84668e-04, 5.05066e-04, 0.00000e+00, 4.02881e+03,
254         -1.89503e-03, 0.00000e+00, 0.00000e+00, 8.21407e-04, 2.06780e-03,
255         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
256         -1.20410e-02, -3.63963e-03, 9.92070e-05, -1.15284e-04, -6.33059e-05,
257         -6.05545e-01, 8.34218e-03, -9.13036e+01, 3.71042e-04, 0.00000e+00,
258         4.19000e-04, 2.70928e-03, 3.31507e-03, -4.44508e-03, -4.96334e-03,
259         -1.60449e-03, 3.95119e-03, 2.48924e-03, 5.09815e-04, 4.05302e-03,
260         2.24076e-03, 0.00000e+00, 6.84256e-03, 4.66354e-04, 0.00000e+00,
261         -3.68328e-04, 0.00000e+00, 0.00000e+00, -1.46870e+02, 0.00000e+00,
262         0.00000e+00, 1.09501e-03, 4.65156e-04, 5.62583e-04, 3.21596e+00,
263         6.43168e-04, 3.14860e-03, 3.40738e-03, 1.78481e-03, 9.62532e-04,
264         5.58171e-04, 3.43731e+00, -2.33195e-01, 5.10289e-04, 0.00000e+00,
265         0.00000e+00, -9.25347e+04, 0.00000e+00, -1.99639e-03, 0.00000e+00,
266         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
267         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
268     };
269 
270     /** NRLMSISE-00 data: density pd[9][150]. */
271     private static final double[][] PD = {
272         // HE DENSITY
273         {
274             1.09979e+00, -4.88060e-02, -1.97501e-01, -9.10280e-02, -6.96558e-03,
275             2.42136e-02, 3.91333e-01, -7.20068e-03, -3.22718e-02, 1.41508e+00,
276             1.68194e-01, 1.85282e-02, 1.09384e-01, -7.24282e+00, 0.00000e+00,
277             2.96377e-01, -4.97210e-02, 1.04114e+02, -8.61108e-02, -7.29177e-04,
278             1.48998e-06, 1.08629e-03, 0.00000e+00, 0.00000e+00, 8.31090e-02,
279             1.12818e-01, -5.75005e-02, -1.29919e-02, -1.78849e-02, -2.86343e-06,
280             0.00000e+00, -1.51187e+02, -6.65902e-03, 0.00000e+00, -2.02069e-03,
281             0.00000e+00, 0.00000e+00, 4.32264e-02, -2.80444e+01, -3.26789e-03,
282             2.47461e-03, 0.00000e+00, 0.00000e+00, 9.82100e-02, 1.22714e-01,
283             -3.96450e-02, 0.00000e+00, -2.76489e-03, 0.00000e+00, 1.87723e-03,
284             -8.09813e-03, 4.34428e-05, -7.70932e-03, 0.00000e+00, -2.28894e-03,
285             -5.69070e-03, -5.22193e-03, 6.00692e-03, -7.80434e+03, -3.48336e-03,
286             -6.38362e-03, -1.82190e-03, 0.00000e+00, -7.58976e+01, -2.17875e-02,
287             -1.72524e-02, -9.06287e-03, 0.00000e+00, 2.44725e-02, 8.66040e-02,
288             1.05712e-01, 3.02543e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
289             -6.01364e+03, -5.64668e-03, -2.54157e-03, 0.00000e+00, 3.15611e+02,
290             -5.69158e-03, 0.00000e+00, 0.00000e+00, -4.47216e-03, -4.49523e-03,
291             4.64428e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
292             4.51236e-02, 2.46520e-02, 6.17794e-03, 0.00000e+00, 0.00000e+00,
293             -3.62944e-01, -4.80022e-02, -7.57230e+01, -1.99656e-03, 0.00000e+00,
294             -5.18780e-03, -1.73990e-02, -9.03485e-03, 7.48465e-03, 1.53267e-02,
295             1.06296e-02, 1.18655e-02, 2.55569e-03, 1.69020e-03, 3.51936e-02,
296             -1.81242e-02, 0.00000e+00, -1.00529e-01, -5.10574e-03, 0.00000e+00,
297             2.10228e-03, 0.00000e+00, 0.00000e+00, -1.73255e+02, 5.07833e-01,
298             -2.41408e-01, 8.75414e-03, 2.77527e-03, -8.90353e-05, -5.25148e+00,
299             -5.83899e-03, -2.09122e-02, -9.63530e-03, 9.77164e-03, 4.07051e-03,
300             2.53555e-04, -5.52875e+00, -3.55993e-01, -2.49231e-03, 0.00000e+00,
301             0.00000e+00, 2.86026e+01, 0.00000e+00, 3.42722e-04, 0.00000e+00,
302             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
303             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
304         },
305         // O DENSITY
306         {
307             1.02315e+00, -1.59710e-01, -1.06630e-01, -1.77074e-02, -4.42726e-03,
308             3.44803e-02, 4.45613e-02, -3.33751e-02, -5.73598e-02, 3.50360e-01,
309             6.33053e-02, 2.16221e-02, 5.42577e-02, -5.74193e+00, 0.00000e+00,
310             1.90891e-01, -1.39194e-02, 1.01102e+02, 8.16363e-02, 1.33717e-04,
311             6.54403e-06, 3.10295e-03, 0.00000e+00, 0.00000e+00, 5.38205e-02,
312             1.23910e-01, -1.39831e-02, 0.00000e+00, 0.00000e+00, -3.95915e-06,
313             0.00000e+00, -7.14651e-01, -5.01027e-03, 0.00000e+00, -3.24756e-03,
314             0.00000e+00, 0.00000e+00, 4.42173e-02, -1.31598e+01, -3.15626e-03,
315             1.24574e-03, -1.47626e-03, -1.55461e-03, 6.40682e-02, 1.34898e-01,
316             -2.42415e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 6.13666e-04,
317             -5.40373e-03, 2.61635e-05, -3.33012e-03, 0.00000e+00, -3.08101e-03,
318             -2.42679e-03, -3.36086e-03, 0.00000e+00, -1.18979e+03, -5.04738e-02,
319             -2.61547e-03, -1.03132e-03, 1.91583e-04, -8.38132e+01, -1.40517e-02,
320             -1.14167e-02, -4.08012e-03, 1.73522e-04, -1.39644e-02, -6.64128e-02,
321             -6.85152e-02, -1.34414e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
322             6.07916e+02, -4.12220e-03, -2.20996e-03, 0.00000e+00, 1.70277e+03,
323             -4.63015e-03, 0.00000e+00, 0.00000e+00, -2.25360e-03, -2.96204e-03,
324             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
325             3.92786e-02, 1.31186e-02, -1.78086e-03, 0.00000e+00, 0.00000e+00,
326             -3.90083e-01, -2.84741e-02, -7.78400e+01, -1.02601e-03, 0.00000e+00,
327             -7.26485e-04, -5.42181e-03, -5.59305e-03, 1.22825e-02, 1.23868e-02,
328             6.68835e-03, -1.03303e-02, -9.51903e-03, 2.70021e-04, -2.57084e-02,
329             -1.32430e-02, 0.00000e+00, -3.81000e-02, -3.16810e-03, 0.00000e+00,
330             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
331             0.00000e+00, -9.05762e-04, -2.14590e-03, -1.17824e-03, 3.66732e+00,
332             -3.79729e-04, -6.13966e-03, -5.09082e-03, -1.96332e-03, -3.08280e-03,
333             -9.75222e-04, 4.03315e+00, -2.52710e-01, 0.00000e+00, 0.00000e+00,
334             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
335             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
336             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
337         },
338         // N2 DENSITY
339         {
340             1.16112e+00, 0.00000e+00, 0.00000e+00, 3.33725e-02, 0.00000e+00,
341             3.48637e-02, -5.44368e-03, 0.00000e+00, -6.73940e-02, 1.74754e-01,
342             0.00000e+00, 0.00000e+00, 0.00000e+00, 1.74712e+02, 0.00000e+00,
343             1.26733e-01, 0.00000e+00, 1.03154e+02, 5.52075e-02, 0.00000e+00,
344             0.00000e+00, 8.13525e-04, 0.00000e+00, 0.00000e+00, 8.66784e-02,
345             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
346             0.00000e+00, -2.50482e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
347             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.48894e-03,
348             6.16053e-04, -5.79716e-04, 2.95482e-03, 8.47001e-02, 1.70147e-01,
349             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
350             0.00000e+00, 2.47425e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
351             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
352             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
353             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
354             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
355             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
356             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
357             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
358             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
359             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
360             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
361             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
362             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
363             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
364             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
365             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
366             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
367             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
368             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
369             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
370         },
371         // TOTAL MASS
372         {
373             9.44846e-01, 0.00000e+00, 0.00000e+00, -3.08617e-02, 0.00000e+00,
374             -2.44019e-02, 6.48607e-03, 0.00000e+00, 3.08181e-02, 4.59392e-02,
375             0.00000e+00, 0.00000e+00, 0.00000e+00, 1.74712e+02, 0.00000e+00,
376             2.13260e-02, 0.00000e+00, -3.56958e+02, 0.00000e+00, 1.82278e-04,
377             0.00000e+00, 3.07472e-04, 0.00000e+00, 0.00000e+00, 8.66784e-02,
378             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
379             0.00000e+00, 0.00000e+00, 3.83054e-03, 0.00000e+00, 0.00000e+00,
380             -1.93065e-03, -1.45090e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
381             0.00000e+00, -1.23493e-03, 1.36736e-03, 8.47001e-02, 1.70147e-01,
382             3.71469e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
383             5.10250e-03, 2.47425e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
384             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
385             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
386             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
387             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
388             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
389             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
390             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
391             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
392             0.00000e+00, 3.68756e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
393             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
394             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
395             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
396             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
397             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
398             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
399             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
400             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
401             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
402             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
403         },
404         // O2 DENSITY
405         {
406             1.35580e+00, 1.44816e-01, 0.00000e+00, 6.07767e-02, 0.00000e+00,
407             2.94777e-02, 7.46900e-02, 0.00000e+00, -9.23822e-02, 8.57342e-02,
408             0.00000e+00, 0.00000e+00, 0.00000e+00, 2.38636e+01, 0.00000e+00,
409             7.71653e-02, 0.00000e+00, 8.18751e+01, 1.87736e-02, 0.00000e+00,
410             0.00000e+00, 1.49667e-02, 0.00000e+00, 0.00000e+00, 8.66784e-02,
411             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
412             0.00000e+00, -3.67874e+02, 5.48158e-03, 0.00000e+00, 0.00000e+00,
413             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
414             0.00000e+00, 0.00000e+00, 0.00000e+00, 8.47001e-02, 1.70147e-01,
415             1.22631e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
416             8.17187e-03, 3.71617e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
417             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
418             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.10826e-03,
419             -3.13640e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
420             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
421             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
422             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
423             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
424             -7.35742e-02, -5.00266e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
425             0.00000e+00, 1.94965e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
426             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
427             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
428             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
429             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
430             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
431             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
432             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
433             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
434             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
435             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
436         },
437         // AR DENSITY
438         {
439             1.04761e+00, 2.00165e-01, 2.37697e-01, 3.68552e-02, 0.00000e+00,
440             3.57202e-02, -2.14075e-01, 0.00000e+00, -1.08018e-01, -3.73981e-01,
441             0.00000e+00, 3.10022e-02, -1.16305e-03, -2.07596e+01, 0.00000e+00,
442             8.64502e-02, 0.00000e+00, 9.74908e+01, 5.16707e-02, 0.00000e+00,
443             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 8.66784e-02,
444             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
445             0.00000e+00, 3.46193e+02, 1.34297e-02, 0.00000e+00, 0.00000e+00,
446             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -3.48509e-03,
447             -1.54689e-04, 0.00000e+00, 0.00000e+00, 8.47001e-02, 1.70147e-01,
448             1.47753e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
449             1.89320e-02, 3.68181e-05, 1.32570e-02, 0.00000e+00, 0.00000e+00,
450             3.59719e-03, 7.44328e-03, -1.00023e-03, -6.50528e+03, 0.00000e+00,
451             1.03485e-02, -1.00983e-03, -4.06916e-03, -6.60864e+01, -1.71533e-02,
452             1.10605e-02, 1.20300e-02, -5.20034e-03, 0.00000e+00, 0.00000e+00,
453             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
454             -2.62769e+03, 7.13755e-03, 4.17999e-03, 0.00000e+00, 1.25910e+04,
455             0.00000e+00, 0.00000e+00, 0.00000e+00, -2.23595e-03, 4.60217e-03,
456             5.71794e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
457             -3.18353e-02, -2.35526e-02, -1.36189e-02, 0.00000e+00, 0.00000e+00,
458             0.00000e+00, 2.03522e-02, -6.67837e+01, -1.09724e-03, 0.00000e+00,
459             -1.38821e-02, 1.60468e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
460             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.51574e-02,
461             -5.44470e-04, 0.00000e+00, 7.28224e-02, 6.59413e-02, 0.00000e+00,
462             -5.15692e-03, 0.00000e+00, 0.00000e+00, -3.70367e+03, 0.00000e+00,
463             0.00000e+00, 1.36131e-02, 5.38153e-03, 0.00000e+00, 4.76285e+00,
464             -1.75677e-02, 2.26301e-02, 0.00000e+00, 1.76631e-02, 4.77162e-03,
465             0.00000e+00, 5.39354e+00, 0.00000e+00, -7.51710e-03, 0.00000e+00,
466             0.00000e+00, -8.82736e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
467             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
468             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
469         },
470         // H DENSITY
471         {
472             1.26376e+00, -2.14304e-01, -1.49984e-01, 2.30404e-01, 2.98237e-02,
473             2.68673e-02, 2.96228e-01, 2.21900e-02, -2.07655e-02, 4.52506e-01,
474             1.20105e-01, 3.24420e-02, 4.24816e-02, -9.14313e+00, 0.00000e+00,
475             2.47178e-02, -2.88229e-02, 8.12805e+01, 5.10380e-02, -5.80611e-03,
476             2.51236e-05, -1.24083e-02, 0.00000e+00, 0.00000e+00, 8.66784e-02,
477             1.58727e-01, -3.48190e-02, 0.00000e+00, 0.00000e+00, 2.89885e-05,
478             0.00000e+00, 1.53595e+02, -1.68604e-02, 0.00000e+00, 1.01015e-02,
479             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.84552e-04,
480             -1.22181e-03, 0.00000e+00, 0.00000e+00, 8.47001e-02, 1.70147e-01,
481             -1.04927e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, -5.91313e-03,
482             -2.30501e-02, 3.14758e-05, 0.00000e+00, 0.00000e+00, 1.26956e-02,
483             8.35489e-03, 3.10513e-04, 0.00000e+00, 3.42119e+03, -2.45017e-03,
484             -4.27154e-04, 5.45152e-04, 1.89896e-03, 2.89121e+01, -6.49973e-03,
485             -1.93855e-02, -1.48492e-02, 0.00000e+00, -5.10576e-02, 7.87306e-02,
486             9.51981e-02, -1.49422e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
487             2.65503e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
488             0.00000e+00, 0.00000e+00, 0.00000e+00, 6.37110e-03, 3.24789e-04,
489             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
490             6.14274e-02, 1.00376e-02, -8.41083e-04, 0.00000e+00, 0.00000e+00,
491             0.00000e+00, -1.27099e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
492             -3.94077e-03, -1.28601e-02, -7.97616e-03, 0.00000e+00, 0.00000e+00,
493             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
494             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
495             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
496             0.00000e+00, -6.71465e-03, -1.69799e-03, 1.93772e-03, 3.81140e+00,
497             -7.79290e-03, -1.82589e-02, -1.25860e-02, -1.04311e-02, -3.02465e-03,
498             2.43063e-03, 3.63237e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
499             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
500             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
501             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
502         },
503         // N DENSITY
504         {
505             7.09557e+01, -3.26740e-01, 0.00000e+00, -5.16829e-01, -1.71664e-03,
506             9.09310e-02, -6.71500e-01, -1.47771e-01, -9.27471e-02, -2.30862e-01,
507             -1.56410e-01, 1.34455e-02, -1.19717e-01, 2.52151e+00, 0.00000e+00,
508             -2.41582e-01, 5.92939e-02, 4.39756e+00, 9.15280e-02, 4.41292e-03,
509             0.00000e+00, 8.66807e-03, 0.00000e+00, 0.00000e+00, 8.66784e-02,
510             1.58727e-01, 9.74701e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
511             0.00000e+00, 6.70217e+01, -1.31660e-03, 0.00000e+00, -1.65317e-02,
512             0.00000e+00, 0.00000e+00, 8.50247e-02, 2.77428e+01, 4.98658e-03,
513             6.15115e-03, 9.50156e-03, -2.12723e-02, 8.47001e-02, 1.70147e-01,
514             -2.38645e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.37380e-03,
515             -8.41918e-03, 2.80145e-05, 7.12383e-03, 0.00000e+00, -1.66209e-02,
516             1.03533e-04, -1.68898e-02, 0.00000e+00, 3.64526e+03, 0.00000e+00,
517             6.54077e-03, 3.69130e-04, 9.94419e-04, 8.42803e+01, -1.16124e-02,
518             -7.74414e-03, -1.68844e-03, 1.42809e-03, -1.92955e-03, 1.17225e-01,
519             -2.41512e-02, 1.50521e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
520             1.60261e+03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
521             0.00000e+00, 0.00000e+00, 0.00000e+00, -3.54403e-04, -1.87270e-02,
522             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
523             2.76439e-02, 6.43207e-03, -3.54300e-02, 0.00000e+00, 0.00000e+00,
524             0.00000e+00, -2.80221e-02, 8.11228e+01, -6.75255e-04, 0.00000e+00,
525             -1.05162e-02, -3.48292e-03, -6.97321e-03, 0.00000e+00, 0.00000e+00,
526             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
527             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
528             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
529             0.00000e+00, -1.45546e-03, -1.31970e-02, -3.57751e-03, -1.09021e+00,
530             -1.50181e-02, -7.12841e-03, -6.64590e-03, -3.52610e-03, -1.87773e-02,
531             -2.22432e-03, -3.93895e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
532             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
533             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
534             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
535         },
536         // HOT O DENSITY
537         {
538             6.04050e-02, 1.57034e+00, 2.99387e-02, 0.00000e+00, 0.00000e+00,
539             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -1.51018e+00,
540             0.00000e+00, 0.00000e+00, 0.00000e+00, -8.61650e+00, 1.26454e-02,
541             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
542             0.00000e+00, 5.50878e-03, 0.00000e+00, 0.00000e+00, 8.66784e-02,
543             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
544             0.00000e+00, 0.00000e+00, 6.23881e-02, 0.00000e+00, 0.00000e+00,
545             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
546             0.00000e+00, 0.00000e+00, 0.00000e+00, 8.47001e-02, 1.70147e-01,
547             -9.45934e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
548             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
549             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
550             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
551             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
552             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
553             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
554             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
555             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
556             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
557             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
558             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
559             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
560             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
561             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
562             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
563             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
564             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
565             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
566             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
567             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
568         }
569     };
570 
571     /** NRLMSISE-00 data: ps[150]. */
572     private static final double[] PS = {
573         9.56827e-01, 6.20637e-02, 3.18433e-02, 0.00000e+00, 0.00000e+00,
574         3.94900e-02, 0.00000e+00, 0.00000e+00, -9.24882e-03, -7.94023e-03,
575         0.00000e+00, 0.00000e+00, 0.00000e+00, 1.74712e+02, 0.00000e+00,
576         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
577         0.00000e+00, 2.74677e-03, 0.00000e+00, 1.54951e-02, 8.66784e-02,
578         1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
579         0.00000e+00, 0.00000e+00, 0.00000e+00, -6.99007e-04, 0.00000e+00,
580         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
581         0.00000e+00, 1.24362e-02, -5.28756e-03, 8.47001e-02, 1.70147e-01,
582         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
583         0.00000e+00, 2.47425e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
584         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
585         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
586         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
587         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
588         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
589         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
590         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
591         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
592         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
593         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
594         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
595         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
596         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
597         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
598         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
599         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
600         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
601         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
602         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
603     };
604 
605     /** NRLMSISE-00 data: TURBO pdl[2][25]. */
606     private static final double[][] PDL = {
607         {
608             1.09930e+00, 3.90631e+00, 3.07165e+00, 9.86161e-01, 1.63536e+01,
609             4.63830e+00, 1.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
610             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
611             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
612             0.00000e+00, 0.00000e+00, 1.28840e+00, 3.10302e-02, 1.18339e-01
613         },
614         {
615             1.00000e+00, 7.00000e-01, 1.15020e+00, 3.44689e+00, 1.28840e+00,
616             1.00000e+00, 1.08738e+00, 1.22947e+00, 1.10016e+00, 7.34129e-01,
617             1.15241e+00, 2.22784e+00, 7.95046e-01, 4.01612e+00, 4.47749e+00,
618             1.23435e+02, -7.60535e-02, 1.68986e-06, 7.44294e-01, 1.03604e+00,
619             1.72783e+02, 1.15020e+00, 3.44689e+00, -7.46230e-01, 9.49154e-01
620         }
621     };
622 
623     /** NRLMSISE-00 data: LOWER BOUNDARY ptm[10]. */
624     private static final double[] PTM = {
625         1.04130e+03, 3.86000e+02, 1.95000e+02, 1.66728e+01, 2.13000e+02,
626         1.20000e+02, 2.40000e+02, 1.87000e+02, -2.00000e+00, 0.00000e+00
627     };
628 
629     /** NRLMSISE-00 data: pdm[8][10]. */
630     private static final double[][] PDM = {
631         {
632             2.45600e+07, 6.71072e-06, 1.00000e+02, 0.00000e+00, 1.10000e+02,
633             1.00000e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
634         },
635         {
636             8.59400E+10, 1.00000e+00, 1.05000e+02, -8.00000e+00, 1.10000e+02,
637             1.00000e+01, 9.00000e+01, 2.00000e+00, 0.00000e+00, 0.00000e+00
638         },
639         {
640             2.81000E+11, 0.00000e+00, 1.05000e+02, 2.80000e+01, 2.89500e+01,
641             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
642         },
643         {
644             3.30000E+10, 2.68270e-01, 1.05000e+02, 1.00000e+00, 1.10000e+02,
645             1.00000e+01, 1.10000e+02, -1.00000e+01, 0.00000e+00, 0.00000e+00
646         },
647         {
648             1.33000e+09, 1.19615e-02, 1.05000e+02, 0.00000e+00, 1.10000e+02,
649             1.00000e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
650         },
651         {
652             1.76100e+05, 1.00000e+00, 9.50000e+01, -8.00000e+00, 1.10000e+02,
653             1.00000e+01, 9.00000e+01, 2.00000e+00, 0.00000e+00, 0.00000e+00,
654         },
655         {
656             1.00000e+07, 1.00000e+00, 1.05000e+02, -8.00000e+00, 1.10000e+02,
657             1.00000e+01, 9.00000e+01, 2.00000e+00, 0.00000e+00, 0.00000e+00
658         },
659         {
660             1.00000e+06, 1.00000e+00, 1.05000e+02, -8.00000e+00, 5.50000e+02,
661             7.60000e+01, 9.00000e+01, 2.00000e+00, 0.00000e+00, 4.00000e+03
662         }
663     };
664 
665     /** NRLMSISE-00 data: ptl[4][100]. */
666     private static final double[][] PTL = {
667         // TN1(2)
668         {
669             1.00858e+00, 4.56011e-02, -2.22972e-02, -5.44388e-02, 5.23136e-04,
670             -1.88849e-02, 5.23707e-02, -9.43646e-03, 6.31707e-03, -7.80460e-02,
671             -4.88430e-02, 0.00000e+00, 0.00000e+00, -7.60250e+00, 0.00000e+00,
672             -1.44635e-02, -1.76843e-02, -1.21517e+02, 2.85647e-02, 0.00000e+00,
673             0.00000e+00, 6.31792e-04, 0.00000e+00, 5.77197e-03, 8.66784e-02,
674             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
675             0.00000e+00, -8.90272e+03, 3.30611e-03, 3.02172e-03, 0.00000e+00,
676             -2.13673e-03, -3.20910e-04, 0.00000e+00, 0.00000e+00, 2.76034e-03,
677             2.82487e-03, -2.97592e-04, -4.21534e-03, 8.47001e-02, 1.70147e-01,
678             8.96456e-03, 0.00000e+00, -1.08596e-02, 0.00000e+00, 0.00000e+00,
679             5.57917e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
680             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
681             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
682             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
683             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
684             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
685             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
686             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
687             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
688             0.00000e+00, 9.65405e-03, 0.00000e+00, 0.00000e+00, 2.00000e+00
689         },
690         // TN1(3)
691         {
692             9.39664e-01, 8.56514e-02, -6.79989e-03, 2.65929e-02, -4.74283e-03,
693             1.21855e-02, -2.14905e-02, 6.49651e-03, -2.05477e-02, -4.24952e-02,
694             0.00000e+00, 0.00000e+00, 0.00000e+00, 1.19148e+01, 0.00000e+00,
695             1.18777e-02, -7.28230e-02, -8.15965e+01, 1.73887e-02, 0.00000e+00,
696             0.00000e+00, 0.00000e+00, -1.44691e-02, 2.80259e-04, 8.66784e-02,
697             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
698             0.00000e+00, 2.16584e+02, 3.18713e-03, 7.37479e-03, 0.00000e+00,
699             -2.55018e-03, -3.92806e-03, 0.00000e+00, 0.00000e+00, -2.89757e-03,
700             -1.33549e-03, 1.02661e-03, 3.53775e-04, 8.47001e-02, 1.70147e-01,
701             -9.17497e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
702             3.56082e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
703             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
704             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
705             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
706             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
707             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
708             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
709             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
710             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
711             0.00000e+00, -1.00902e-02, 0.00000e+00, 0.00000e+00, 2.00000e+00
712         },
713         // TN1(4)
714         {
715             9.85982e-01, -4.55435e-02, 1.21106e-02, 2.04127e-02, -2.40836e-03,
716             1.11383e-02, -4.51926e-02, 1.35074e-02, -6.54139e-03, 1.15275e-01,
717             1.28247e-01, 0.00000e+00, 0.00000e+00, -5.30705e+00, 0.00000e+00,
718             -3.79332e-02, -6.24741e-02, 7.71062e-01, 2.96315e-02, 0.00000e+00,
719             0.00000e+00, 0.00000e+00, 6.81051e-03, -4.34767e-03, 8.66784e-02,
720             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
721             0.00000e+00, 1.07003e+01, -2.76907e-03, 4.32474e-04, 0.00000e+00,
722             1.31497e-03, -6.47517e-04, 0.00000e+00, -2.20621e+01, -1.10804e-03,
723             -8.09338e-04, 4.18184e-04, 4.29650e-03, 8.47001e-02, 1.70147e-01,
724             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
725             -4.04337e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
726             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
727             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -9.52550e-04,
728             8.56253e-04, 4.33114e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
729             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.21223e-03,
730             2.38694e-04, 9.15245e-04, 1.28385e-03, 8.67668e-04, -5.61425e-06,
731             1.04445e+00, 3.41112e+01, 0.00000e+00, -8.40704e-01, -2.39639e+02,
732             7.06668e-01, -2.05873e+01, -3.63696e-01, 2.39245e+01, 0.00000e+00,
733             -1.06657e-03, -7.67292e-04, 1.54534e-04, 0.00000e+00, 0.00000e+00,
734             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
735         },
736         // TN1(5) TN2(1)
737         {
738             1.00320e+00, 3.83501e-02, -2.38983e-03, 2.83950e-03, 4.20956e-03,
739             5.86619e-04, 2.19054e-02, -1.00946e-02, -3.50259e-03, 4.17392e-02,
740             -8.44404e-03, 0.00000e+00, 0.00000e+00, 4.96949e+00, 0.00000e+00,
741             -7.06478e-03, -1.46494e-02, 3.13258e+01, -1.86493e-03, 0.00000e+00,
742             -1.67499e-02, 0.00000e+00, 0.00000e+00, 5.12686e-04, 8.66784e-02,
743             1.58727e-01, -4.64167e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
744             4.37353e-03, -1.99069e+02, 0.00000e+00, -5.34884e-03, 0.00000e+00,
745             1.62458e-03, 2.93016e-03, 2.67926e-03, 5.90449e+02, 0.00000e+00,
746             0.00000e+00, -1.17266e-03, -3.58890e-04, 8.47001e-02, 1.70147e-01,
747             0.00000e+00, 0.00000e+00, 1.38673e-02, 0.00000e+00, 0.00000e+00,
748             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
749             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
750             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.60571e-03,
751             6.28078e-04, 5.05469e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
752             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -1.57829e-03,
753             -4.00855e-04, 5.04077e-05, -1.39001e-03, -2.33406e-03, -4.81197e-04,
754             1.46758e+00, 6.20332e+00, 0.00000e+00, 3.66476e-01, -6.19760e+01,
755             3.09198e-01, -1.98999e+01, 0.00000e+00, -3.29933e+02, 0.00000e+00,
756             -1.10080e-03, -9.39310e-05, 1.39638e-04, 0.00000e+00, 0.00000e+00,
757             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
758         }
759     };
760 
761     /** NRLMSISE-00 data: pma[10][100]. */
762     private static final double[][] PMA = {
763         // TN2(2)
764         {
765             9.81637e-01, -1.41317e-03, 3.87323e-02, 0.00000e+00, 0.00000e+00,
766             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -3.58707e-02,
767             -8.63658e-03, 0.00000e+00, 0.00000e+00, -2.02226e+00, 0.00000e+00,
768             -8.69424e-03, -1.91397e-02, 8.76779e+01, 4.52188e-03, 0.00000e+00,
769             2.23760e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
770             0.00000e+00, -7.07572e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
771             -4.11210e-03, 3.50060e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
772             0.00000e+00, 0.00000e+00, -8.36657e-03, 1.61347e+01, 0.00000e+00,
773             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
774             0.00000e+00, 0.00000e+00, -1.45130e-02, 0.00000e+00, 0.00000e+00,
775             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
776             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
777             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.24152e-03,
778             6.43365e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
779             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.33255e-03,
780             2.42657e-03, 1.60666e-03, -1.85728e-03, -1.46874e-03, -4.79163e-06,
781             1.22464e+00, 3.53510e+01, 0.00000e+00, 4.49223e-01, -4.77466e+01,
782             4.70681e-01, 8.41861e+00, -2.88198e-01, 1.67854e+02, 0.00000e+00,
783             7.11493e-04, 6.05601e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
784             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
785         },
786         // TN2(3)
787         {
788             1.00422e+00, -7.11212e-03, 5.24480e-03, 0.00000e+00, 0.00000e+00,
789             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -5.28914e-02,
790             -2.41301e-02, 0.00000e+00, 0.00000e+00, -2.12219e+01, -1.03830e-02,
791             -3.28077e-03, 1.65727e-02, 1.68564e+00, -6.68154e-03, 0.00000e+00,
792             1.45155e-02, 0.00000e+00, 8.42365e-03, 0.00000e+00, 0.00000e+00,
793             0.00000e+00, -4.34645e-03, 0.00000e+00, 0.00000e+00, 2.16780e-02,
794             0.00000e+00, -1.38459e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
795             0.00000e+00, 0.00000e+00, 7.04573e-03, -4.73204e+01, 0.00000e+00,
796             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
797             0.00000e+00, 0.00000e+00, 1.08767e-02, 0.00000e+00, 0.00000e+00,
798             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
799             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -8.08279e-03,
800             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 5.21769e-04,
801             -2.27387e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
802             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.26769e-03,
803             3.16901e-03, 4.60316e-04, -1.01431e-04, 1.02131e-03, 9.96601e-04,
804             1.25707e+00, 2.50114e+01, 0.00000e+00, 4.24472e-01, -2.77655e+01,
805             3.44625e-01, 2.75412e+01, 0.00000e+00, 7.94251e+02, 0.00000e+00,
806             2.45835e-03, 1.38871e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
807             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
808         },
809         // TN2(4) TN3(1)
810         {
811             1.01890e+00, -2.46603e-02, 1.00078e-02, 0.00000e+00, 0.00000e+00,
812             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -6.70977e-02,
813             -4.02286e-02, 0.00000e+00, 0.00000e+00, -2.29466e+01, -7.47019e-03,
814             2.26580e-03, 2.63931e-02, 3.72625e+01, -6.39041e-03, 0.00000e+00,
815             9.58383e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
816             0.00000e+00, -1.85291e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
817             0.00000e+00, 1.39717e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
818             0.00000e+00, 0.00000e+00, 9.19771e-03, -3.69121e+02, 0.00000e+00,
819             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
820             0.00000e+00, 0.00000e+00, -1.57067e-02, 0.00000e+00, 0.00000e+00,
821             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
822             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -7.07265e-03,
823             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.92953e-03,
824             -2.77739e-03, -4.40092e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
825             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.47280e-03,
826             2.95035e-04, -1.81246e-03, 2.81945e-03, 4.27296e-03, 9.78863e-04,
827             1.40545e+00, -6.19173e+00, 0.00000e+00, 0.00000e+00, -7.93632e+01,
828             4.44643e-01, -4.03085e+02, 0.00000e+00, 1.15603e+01, 0.00000e+00,
829             2.25068e-03, 8.48557e-04, -2.98493e-04, 0.00000e+00, 0.00000e+00,
830             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
831         },
832         // TN3(2)
833         {
834             9.75801e-01, 3.80680e-02, -3.05198e-02, 0.00000e+00, 0.00000e+00,
835             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.85575e-02,
836             5.04057e-02, 0.00000e+00, 0.00000e+00, -1.76046e+02, 1.44594e-02,
837             -1.48297e-03, -3.68560e-03, 3.02185e+01, -3.23338e-03, 0.00000e+00,
838             1.53569e-02, 0.00000e+00, -1.15558e-02, 0.00000e+00, 0.00000e+00,
839             0.00000e+00, 4.89620e-03, 0.00000e+00, 0.00000e+00, -1.00616e-02,
840             -8.21324e-03, -1.57757e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
841             0.00000e+00, 0.00000e+00, 6.63564e-03, 4.58410e+01, 0.00000e+00,
842             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
843             0.00000e+00, 0.00000e+00, -2.51280e-02, 0.00000e+00, 0.00000e+00,
844             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
845             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 9.91215e-03,
846             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -8.73148e-04,
847             -1.29648e-03, -7.32026e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
848             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -4.68110e-03,
849             -4.66003e-03, -1.31567e-03, -7.39390e-04, 6.32499e-04, -4.65588e-04,
850             -1.29785e+00, -1.57139e+02, 0.00000e+00, 2.58350e-01, -3.69453e+01,
851             4.10672e-01, 9.78196e+00, -1.52064e-01, -3.85084e+03, 0.00000e+00,
852             -8.52706e-04, -1.40945e-03, -7.26786e-04, 0.00000e+00, 0.00000e+00,
853             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
854         },
855         // TN3(3)
856         {
857             9.60722e-01, 7.03757e-02, -3.00266e-02, 0.00000e+00, 0.00000e+00,
858             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.22671e-02,
859             4.10423e-02, 0.00000e+00, 0.00000e+00, -1.63070e+02, 1.06073e-02,
860             5.40747e-04, 7.79481e-03, 1.44908e+02, 1.51484e-04, 0.00000e+00,
861             1.97547e-02, 0.00000e+00, -1.41844e-02, 0.00000e+00, 0.00000e+00,
862             0.00000e+00, 5.77884e-03, 0.00000e+00, 0.00000e+00, 9.74319e-03,
863             0.00000e+00, -2.88015e+03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
864             0.00000e+00, 0.00000e+00, -4.44902e-03, -2.92760e+01, 0.00000e+00,
865             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
866             0.00000e+00, 0.00000e+00, 2.34419e-02, 0.00000e+00, 0.00000e+00,
867             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
868             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 5.36685e-03,
869             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -4.65325e-04,
870             -5.50628e-04, 3.31465e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
871             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.06179e-03,
872             -3.08575e-03, -7.93589e-04, -1.08629e-04, 5.95511e-04, -9.05050e-04,
873             1.18997e+00, 4.15924e+01, 0.00000e+00, -4.72064e-01, -9.47150e+02,
874             3.98723e-01, 1.98304e+01, 0.00000e+00, 3.73219e+03, 0.00000e+00,
875             -1.50040e-03, -1.14933e-03, -1.56769e-04, 0.00000e+00, 0.00000e+00,
876             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
877         },
878         // TN3(4)
879         {
880             1.03123e+00, -7.05124e-02, 8.71615e-03, 0.00000e+00, 0.00000e+00,
881             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -3.82621e-02,
882             -9.80975e-03, 0.00000e+00, 0.00000e+00, 2.89286e+01, 9.57341e-03,
883             0.00000e+00, 0.00000e+00, 8.66153e+01, 7.91938e-04, 0.00000e+00,
884             0.00000e+00, 0.00000e+00, 4.68917e-03, 0.00000e+00, 0.00000e+00,
885             0.00000e+00, 7.86638e-03, 0.00000e+00, 0.00000e+00, 9.90827e-03,
886             0.00000e+00, 6.55573e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
887             0.00000e+00, 0.00000e+00, 0.00000e+00, -4.00200e+01, 0.00000e+00,
888             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
889             0.00000e+00, 0.00000e+00, 7.07457e-03, 0.00000e+00, 0.00000e+00,
890             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
891             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 5.72268e-03,
892             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.04970e-04,
893             1.21560e-03, -8.05579e-06, 0.00000e+00, 0.00000e+00, 0.00000e+00,
894             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.49941e-03,
895             -4.57256e-04, -1.59311e-04, 2.96481e-04, -1.77318e-03, -6.37918e-04,
896             1.02395e+00, 1.28172e+01, 0.00000e+00, 1.49903e-01, -2.63818e+01,
897             0.00000e+00, 4.70628e+01, -2.22139e-01, 4.82292e-02, 0.00000e+00,
898             -8.67075e-04, -5.86479e-04, 5.32462e-04, 0.00000e+00, 0.00000e+00,
899             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
900         },
901         // TN3(5) SURFACE TEMP TSL
902         {
903             1.00828e+00, -9.10404e-02, -2.26549e-02, 0.00000e+00, 0.00000e+00,
904             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.32420e-02,
905             -9.08925e-03, 0.00000e+00, 0.00000e+00, 3.36105e+01, 0.00000e+00,
906             0.00000e+00, 0.00000e+00, -1.24957e+01, -5.87939e-03, 0.00000e+00,
907             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
908             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
909             0.00000e+00, 2.79765e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
910             0.00000e+00, 0.00000e+00, 0.00000e+00, 2.01237e+03, 0.00000e+00,
911             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
912             0.00000e+00, 0.00000e+00, -1.75553e-02, 0.00000e+00, 0.00000e+00,
913             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
914             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
915             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.29699e-03,
916             1.26659e-03, 2.68402e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
917             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.17894e-03,
918             1.48746e-03, 1.06478e-04, 1.34743e-04, -2.20939e-03, -6.23523e-04,
919             6.36539e-01, 1.13621e+01, 0.00000e+00, -3.93777e-01, 2.38687e+03,
920             0.00000e+00, 6.61865e+02, -1.21434e-01, 9.27608e+00, 0.00000e+00,
921             1.68478e-04, 1.24892e-03, 1.71345e-03, 0.00000e+00, 0.00000e+00,
922             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
923         },
924         // TGN3(2) SURFACE GRAD TSLG
925         {
926             1.57293e+00, -6.78400e-01, 6.47500e-01, 0.00000e+00, 0.00000e+00,
927             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -7.62974e-02,
928             -3.60423e-01, 0.00000e+00, 0.00000e+00, 1.28358e+02, 0.00000e+00,
929             0.00000e+00, 0.00000e+00, 4.68038e+01, 0.00000e+00, 0.00000e+00,
930             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
931             0.00000e+00, -1.67898e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
932             0.00000e+00, 2.90994e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
933             0.00000e+00, 0.00000e+00, 0.00000e+00, 3.15706e+01, 0.00000e+00,
934             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
935             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
936             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
937             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
938             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
939             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
940             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
941             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
942             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
943             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
944             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
945             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
946         },
947         // TGN2(1) TGN1(2)
948         {
949             8.60028e-01, 3.77052e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
950             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -1.17570e+00,
951             0.00000e+00, 0.00000e+00, 0.00000e+00, 7.77757e-03, 0.00000e+00,
952             0.00000e+00, 0.00000e+00, 1.01024e+02, 0.00000e+00, 0.00000e+00,
953             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
954             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
955             0.00000e+00, 6.54251e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
956             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
957             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
958             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
959             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
960             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
961             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
962             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
963             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -1.56959e-02,
964             1.91001e-02, 3.15971e-02, 1.00982e-02, -6.71565e-03, 2.57693e-03,
965             1.38692e+00, 2.82132e-01, 0.00000e+00, 0.00000e+00, 3.81511e+02,
966             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
967             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
968             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
969         },
970         // TGN3(1) TGN2(2)
971         {
972             1.06029e+00, -5.25231e-02, 3.73034e-01, 0.00000e+00, 0.00000e+00,
973             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.31072e-02,
974             -3.88409e-01, 0.00000e+00, 0.00000e+00, -1.65295e+02, -2.13801e-01,
975             -4.38916e-02, -3.22716e-01, -8.82393e+01, 1.18458e-01, 0.00000e+00,
976             -4.35863e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
977             0.00000e+00, -1.19782e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
978             0.00000e+00, 2.62229e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
979             0.00000e+00, 0.00000e+00, 0.00000e+00, -5.37443e+01, 0.00000e+00,
980             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
981             0.00000e+00, 0.00000e+00, -4.55788e-01, 0.00000e+00, 0.00000e+00,
982             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
983             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
984             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.84009e-02,
985             3.96733e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
986             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 5.05494e-02,
987             7.39617e-02, 1.92200e-02, -8.46151e-03, -1.34244e-02, 1.96338e-02,
988             1.50421e+00, 1.88368e+01, 0.00000e+00, 0.00000e+00, -5.13114e+01,
989             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
990             5.11923e-02, 3.61225e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
991             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
992         }
993     };
994 
995     /**  NRLMSISE-00 data: MIDDLE ATMOSPHERE AVERAGES pavgm[10]. */
996     private static final double[] PAVGM = {
997         2.61000e+02, 2.64000e+02, 2.29000e+02, 2.17000e+02, 2.17000e+02,
998         2.23000e+02, 2.86760e+02, -2.93940e+00, 2.50000e+00, 0.00000e+00
999     };
1000 
1001     /** NRLMSISE-00 minimum temperature, used in many cases in density computation. */
1002     private static final double MIN_TEMP = 50.;
1003 
1004     // Fields
1005 
1006     /** External data container. */
1007     private final NRLMSISE00InputParameters inputParams;
1008 
1009     /** Sun position. */
1010     private PVCoordinatesProvider sun;
1011 
1012     /** Earth body shape. */
1013     private final BodyShape earth;
1014 
1015     /** Switches for main effects. */
1016     private final int[] sw;
1017 
1018     /** Switches for cross effects. */
1019     private final int[] swc;
1020 
1021     /** UT time scale. */
1022     private final TimeScale ut;
1023 
1024     /** Constructor.
1025      * <p>
1026      * The model is constructed with all switches set to 1.
1027      * </p>
1028      * <p>
1029      * Parameters are mandatory only for the
1030      * {@link #getDensity(AbsoluteDate, Vector3D, Frame) getDensity()} and
1031      * {@link #getVelocity(AbsoluteDate, Vector3D, Frame) getVelocity()} methods.
1032      * </p>
1033      *
1034      * <p>This constructor uses the {@link DataContext#getDefault() default data context}.
1035      *
1036      * @param parameters the solar and magnetic activity data
1037      * @param sun the Sun position
1038      * @param earth the Earth body shape
1039      * @see #NRLMSISE00(NRLMSISE00InputParameters, PVCoordinatesProvider, BodyShape,
1040      * TimeScale)
1041      */
1042     @DefaultDataContext
1043     public NRLMSISE00(final NRLMSISE00InputParameters parameters,
1044                       final PVCoordinatesProvider sun,
1045                       final BodyShape earth) {
1046         this(parameters, sun, earth,
1047                 DataContext.getDefault().getTimeScales()
1048                         .getUT1(IERSConventions.IERS_2010, true));
1049     }
1050 
1051     /** Constructor.
1052      * <p>
1053      * The model is constructed with all switches set to 1.
1054      * </p>
1055      * <p>
1056      * Parameters are mandatory only for the
1057      * {@link #getDensity(AbsoluteDate, Vector3D, Frame) getDensity()} and
1058      * {@link #getVelocity(AbsoluteDate, Vector3D, Frame) getVelocity()} methods.
1059      * </p>
1060      * @param parameters the solar and magnetic activity data
1061      * @param sun the Sun position
1062      * @param earth the Earth body shape
1063      * @param ut UT time scale. The original documentation for NRLMSISE00 does not
1064      *           distinguish between UTC and UT1. In Orekit 10.0 {@code
1065      *           TimeScalesFactory.getUT1(IERSConventions.IERS_2010, true)} was used.
1066      * @since 10.1
1067      */
1068     public NRLMSISE00(final NRLMSISE00InputParameters parameters,
1069                       final PVCoordinatesProvider sun,
1070                       final BodyShape earth,
1071                       final TimeScale ut) {
1072         this(parameters, sun, earth, allOnes(), allOnes(), ut);
1073     }
1074 
1075     /** Constructor.
1076      * <p>
1077      * The model is constructed with all switches set to 1.
1078      * </p>
1079      * <p>
1080      * Parameters are mandatory only for the
1081      * {@link #getDensity(AbsoluteDate, Vector3D, Frame) getDensity()} and
1082      * {@link #getVelocity(AbsoluteDate, Vector3D, Frame) getVelocity()} methods.
1083      * </p>
1084      * @param parameters the solar and magnetic activity data
1085      * @param sun the Sun position
1086      * @param earth the Earth body shape
1087      * @param sw switches for main effects
1088      * @param swc switches for cross effects
1089      * @param ut UT time scale.
1090      */
1091     private NRLMSISE00(final NRLMSISE00InputParameters parameters,
1092                        final PVCoordinatesProvider sun,
1093                        final BodyShape earth,
1094                        final int[] sw,
1095                        final int[] swc,
1096                        final TimeScale ut) {
1097         this.inputParams = parameters;
1098         this.sun         = sun;
1099         this.earth       = earth;
1100         this.sw          = sw;
1101         this.swc         = swc;
1102         this.ut = ut;
1103     }
1104 
1105     /** Change a switch.
1106      * <p>
1107      * This method creates a new instance, the current instance is
1108      * not changed at all!
1109      * </p>
1110      * @param number switch number between 1 and 23
1111      * @param value switch value
1112      * @return a <em>new</em> instance, with switch changed
1113      */
1114     public NRLMSISE00 withSwitch(final int number, final int value) {
1115         if (number < 1 || number > 23) {
1116             throw new OrekitException(LocalizedCoreFormats.OUT_OF_RANGE_SIMPLE, number, 1, 23);
1117         }
1118 
1119         final int[] newSw       = sw.clone();
1120         final int[] newSwc      = swc.clone();
1121         if (number != 9) {
1122             newSw[number]  = (value == 1) ? 1 : 0;
1123             newSwc[number] = (value > 0) ? 1 : 0;
1124         } else {
1125             if (value == -1 || value == 1) {
1126                 newSw[number] = value;
1127             } else {
1128                 newSw[number] = 0;
1129             }
1130             newSwc[number] = newSw[number];
1131         }
1132 
1133         return new NRLMSISE00(inputParams, sun, earth, newSwc, newSwc, ut);
1134 
1135     }
1136 
1137     /** Create an array of switches set to 1.
1138      * @return array of switches
1139      */
1140     private static int[] allOnes() {
1141         final int[] array = new int[24];
1142         Arrays.fill(array, 1);
1143         return array;
1144     }
1145 
1146     /** {@inheritDoc} */
1147     @Override
1148     public Frame getFrame() {
1149         return earth.getBodyFrame();
1150     }
1151 
1152     /** {@inheritDoc} */
1153     @Override
1154     public double getDensity(final AbsoluteDate date,
1155                              final Vector3D position,
1156                              final Frame frame) {
1157 
1158         // check if data are available :
1159         if (!date.isBetweenOrEqualTo(inputParams.getMinDate(), inputParams.getMaxDate())) {
1160             throw new OrekitException(OrekitMessages.NO_SOLAR_ACTIVITY_AT_DATE,
1161                                       date, inputParams.getMinDate(), inputParams.getMaxDate());
1162         }
1163 
1164         // compute day number in current year and the seconds within the day
1165         final DateTimeComponents dtc = date.getComponents(ut);
1166         final int    doy = dtc.getDate().getDayOfYear();
1167         final double sec = dtc.getTime().getSecondsInLocalDay();
1168 
1169         // compute geodetic position (km and °)
1170         final GeodeticPoint inBody = earth.transform(position, frame, date);
1171         final double alt = inBody.getAltitude() / 1000.;
1172         final double lon = FastMath.toDegrees(inBody.getLongitude());
1173         final double lat = FastMath.toDegrees(inBody.getLatitude());
1174 
1175         // compute local solar time
1176         final double lst = localSolarTime(date, position, frame);
1177 
1178         // get solar activity data and compute
1179         final Output out = new Output(doy, sec, lat, lon, lst, inputParams.getAverageFlux(date),
1180                                       inputParams.getDailyFlux(date), inputParams.getAp(date));
1181         out.gtd7d(alt);
1182 
1183         // return the local density
1184         return out.getDensity(TOTAL_MASS);
1185 
1186     }
1187 
1188     /** {@inheritDoc} */
1189     @Override
1190     public <T extends CalculusFieldElement<T>> T getDensity(final FieldAbsoluteDate<T> date,
1191                                                         final FieldVector3D<T> position,
1192                                                         final Frame frame) {
1193         // check if data are available :
1194         final AbsoluteDate dateD = date.toAbsoluteDate();
1195         if (!dateD.isBetweenOrEqualTo(inputParams.getMinDate(), inputParams.getMaxDate())) {
1196             throw new OrekitException(OrekitMessages.NO_SOLAR_ACTIVITY_AT_DATE,
1197                                       dateD, inputParams.getMinDate(), inputParams.getMaxDate());
1198         }
1199 
1200         // compute day number in current year and the seconds within the day
1201         final DateTimeComponents dtc = dateD.getComponents(ut);
1202         final int    doy = dtc.getDate().getDayOfYear();
1203         final T sec = date.durationFrom(new AbsoluteDate(dtc.getDate(), TimeComponents.H00, ut));
1204 
1205         // compute geodetic position (km and °)
1206         final FieldGeodeticPoint<T> inBody = earth.transform(position, frame, date);
1207         final T alt = inBody.getAltitude().divide(1000.);
1208         final T lon = FastMath.toDegrees(inBody.getLongitude());
1209         final T lat = FastMath.toDegrees(inBody.getLatitude());
1210 
1211         // compute local solar time
1212         final T lst = localSolarTime(dateD, position, frame);
1213 
1214         // get solar activity data and compute
1215         final FieldOutput<T> out = new FieldOutput<>(doy, sec, lat, lon, lst,
1216                                                      inputParams.getAverageFlux(dateD),
1217                                                      inputParams.getDailyFlux(dateD), inputParams.getAp(dateD));
1218         out.gtd7d(alt);
1219 
1220         // return the local density
1221         return out.getDensity(TOTAL_MASS);
1222 
1223     }
1224 
1225     /** Get local solar time.
1226      * @param date current date
1227      * @param position current position in frame
1228      * @param frame the frame in which is defined the position
1229      * @return the local solar time (hour in [0, 24[)
1230      */
1231     private double localSolarTime(final AbsoluteDate date,
1232                                   final Vector3D position,
1233                                   final Frame frame) {
1234         final Vector3D sunPos = sun.getPosition(date, frame);
1235         final double lst = FastMath.PI + FastMath.atan2(
1236                 sunPos.getX() * position.getY() - sunPos.getY() * position.getX(),
1237                 sunPos.getX() * position.getX() + sunPos.getY() * position.getY());
1238         return lst * 12. / FastMath.PI;
1239     }
1240 
1241     /** Get local solar time.
1242      * @param date current date
1243      * @param position current position in frame
1244      * @param frame the frame in which is defined the position
1245      * @param <T> type of the filed elements
1246      * @return the local solar time (hour in [0, 24[)
1247      */
1248     private <T extends CalculusFieldElement<T>> T localSolarTime(final AbsoluteDate date,
1249                                                              final FieldVector3D<T> position,
1250                                                              final Frame frame) {
1251         final Vector3D sunPos = sun.getPosition(date, frame);
1252         final T y  = position.getY().multiply(sunPos.getX()).subtract(position.getX().multiply(sunPos.getY()));
1253         final T x  = position.getX().multiply(sunPos.getX()).add(position.getY().multiply(sunPos.getY()));
1254         final T hl = y.atan2(x).add(y.getPi());
1255 
1256         return hl.divide(y.getPi()).multiply(12.);
1257 
1258     }
1259 
1260     /**
1261      * This class is a placeholder for the computed densities and temperatures.
1262      * <p>
1263      * Densities are provided as an array d such as:
1264      * <ul>
1265      * <li>d[0] = He number density (1/m³)</li>
1266      * <li>d[1] = O number density (1/m³)</li>
1267      * <li>d[2] = N2 number density (1/m³)</li>
1268      * <li>d[3] = O2 number density (1/m³)</li>
1269      * <li>d[4] = Ar number density (1/m³)</li>
1270      * <li>d[5] = total mass density (kg/m³) (*)</li>
1271      * <li>d[6] = H number density (1/m³)</li>
1272      * <li>d[7] = N number density (1/m³)</li>
1273      * <li>d[8] = anomalous oxygen number density (1/m³)
1274      * </ul>
1275      * Total mass density, d[5], is NOT the same for methods gtd7 and gtd7d:
1276      * <ul>
1277      * <li>For gtd7: d[5] is the sum of the mass densities of the species
1278      * He, O, N2, O2, Ar, H and N but does NOT include anomalous oxygen.</li>
1279      * <li>For gtd7d: d[5] is the "effective total mass density for drag" and is the sum
1280      * of the mass densities of all species in this model, INCLUDING anomalous oxygen.</li>
1281      * </ul>
1282      * O, H, and N are set to zero below 72.5 km.
1283      * </p>
1284      * <p>
1285      * Temperatures are provided as an array t such as:
1286      * <ul>
1287      * <li>t[0] = exospheric temperature (K)</li>
1288      * <li>t[1] = temperature at altitude (K)</li>
1289      * </ul>
1290      * t[0] is set to global average for altitudes below 120 km.<br>
1291      * The 120 km gradient is left at global average value for altitudes below 72 km.
1292      * </p>
1293      */
1294     private class Output {
1295 
1296         /** Day of year (from 1 to 365 or 366). */
1297         private final int doy;
1298 
1299         /** Seconds in day (UT scale). */
1300         private final double sec;
1301 
1302         /** Geodetic latitude (°). */
1303         private final double lat;
1304 
1305         /** Geodetic longitude (°). */
1306         private final double lon;
1307 
1308         /** Local apparent solar time (hours). */
1309         private final double hl;
1310 
1311         /** 81 day average of F10.7 flux (centered on day). */
1312         private final double f107a;
1313 
1314         /** Daily F10.7 flux for previous day. */
1315         private final double f107;
1316 
1317         /** Array containing:
1318         *  <ul>
1319         *  <li>0: daily Ap</li>
1320         *  <li>1: 3 hr ap index for current time</li>
1321         *  <li>2: 3 hr ap index for 3 hrs before current time</li>
1322         *  <li>3: 3 hr ap index for 6 hrs before current time</li>
1323         *  <li>4: 3 hr ap index for FOR 9 hrs before current time</li>
1324         *  <li>5: average of eight 3 hr ap indices from 12 to 33 hrs prior to current time</li>
1325         *  <li>6: average of eight 3 hr ap indices from 36 to 57 hrs prior to current time</li>
1326         *  </ul>. */
1327         private final double[] ap;
1328 
1329         /** Gravity at latitude (cm/s2). */
1330         private final double glat;
1331 
1332         /** Effective Earth radius at latitude (km). */
1333         private final double rlat;
1334 
1335         /** N2 mixed density at alt. */
1336         private double dm28;
1337 
1338         /** Legendre polynomials. */
1339         private final double[][] plg;
1340 
1341         /** Cosinus of local solar time. */
1342         private final double ctloc;
1343         /** Sinus of local solar time. */
1344         private final double stloc;
1345         /** Square of ctloc. */
1346         private final double c2tloc;
1347         /** Square of stloc. */
1348         private final double s2tloc;
1349         /** Cube of ctloc. */
1350         private final double c3tloc;
1351         /** Cube of stloc. */
1352         private final double s3tloc;
1353 
1354         /** Magnetic activity based on daily ap. */
1355         private double apdf;
1356 
1357         /** Magnetic activity based on daily ap. */
1358         private double apt;
1359 
1360         /** Temperature at nodes for ZN1 scale. */
1361         private final double[] meso_tn1;
1362 
1363         /** Temperature at nodes for ZN2 scale. */
1364         private final double[] meso_tn2;
1365 
1366         /** Temperature at nodes for ZN3 scale. */
1367         private final double[] meso_tn3;
1368 
1369         /** Temperature gradients at end nodes for ZN1 scale. */
1370         private final double[] meso_tgn1;
1371 
1372         /** Temperature gradients at end nodes for ZN2 scale. */
1373         private final double[] meso_tgn2;
1374 
1375         /** Temperature gradients at end nodes for ZN3 scale. */
1376         private final double[] meso_tgn3;
1377 
1378         /** Densities. */
1379         private final double[] densities;
1380 
1381         /** Temperatures. */
1382         private final double[] temperatures;
1383 
1384         /** Simple constructor.
1385          *  @param doy day of year (from 1 to 365 or 366)
1386          *  @param sec seconds in day (UT scale)
1387          *  @param lat geodetic latitude (°)
1388          *  @param lon geodetic longitude (°)
1389          *  @param hl local apparent solar time (hours)
1390          *  @param f107a 81 day average of F10.7 flux (centered on day)
1391          *  @param f107 daily F10.7 flux for previous day
1392          *  @param ap array containing:
1393          *  <ul>
1394          *  <li>0: daily Ap</li>
1395          *  <li>1: 3 hr ap index for current time</li>
1396          *  <li>2: 3 hr ap index for 3 hrs before current time</li>
1397          *  <li>3: 3 hr ap index for 6 hrs before current time</li>
1398          *  <li>4: 3 hr ap index for FOR 9 hrs before current time</li>
1399          *  <li>5: average of eight 3 hr ap indices from 12 to 33 hrs prior to current time</li>
1400          *  <li>6: average of eight 3 hr ap indices from 36 to 57 hrs prior to current time</li>
1401          *  </ul>
1402          */
1403         Output(final int doy, final double sec,
1404                final double lat, final double lon, final double hl,
1405                final double f107a, final double f107, final double[] ap) {
1406 
1407             this.doy   = doy;
1408             this.sec   = sec;
1409             this.lat   = lat;
1410             this.lon   = lon;
1411             this.hl    = hl;
1412             this.f107a = f107a;
1413             this.f107  = f107;
1414             this.ap    = ap.clone();
1415 
1416             this.plg       = new double[4][8];
1417 
1418             this.meso_tn1  = new double[ZN1.length];
1419             this.meso_tn2  = new double[ZN2.length];
1420             this.meso_tn3  = new double[ZN3.length];
1421             this.meso_tgn1 = new double[2];
1422             this.meso_tgn2 = new double[2];
1423             this.meso_tgn3 = new double[2];
1424 
1425             densities       = new double[9];
1426             temperatures    = new double[2];
1427 
1428             // Calculates latitude variable gravity and effective radius
1429             final double xlat = (sw[2] == 0) ? LAT_REF : lat;
1430             final double c2   = FastMath.cos(2 * DEG_TO_RAD * xlat);
1431             glat = G_REF * (1. - .0026373 * c2);
1432             rlat = 2. * glat / (3.085462e-6 + 2.27e-9 * c2) * 1.e-5;
1433 
1434             // Convert latitude into radians
1435             final double latr = DEG_TO_RAD * lat;
1436 
1437             // Calculate legendre polynomials
1438             final SinCos scLatr = FastMath.sinCos(latr);
1439             final double c      = scLatr.sin();
1440             final double s      = scLatr.cos();
1441 
1442             plg[0][1] = c;
1443             plg[0][2] = ( 3.0 * c * plg[0][1] - 1.0) / 2.0;
1444             plg[0][3] = ( 5.0 * c * plg[0][2] - 2.0 * plg[0][1]) / 3.0;
1445             plg[0][4] = ( 7.0 * c * plg[0][3] - 3.0 * plg[0][2]) / 4.0;
1446             plg[0][5] = ( 9.0 * c * plg[0][4] - 4.0 * plg[0][3]) / 5.0;
1447             plg[0][6] = (11.0 * c * plg[0][5] - 5.0 * plg[0][4]) / 6.0;
1448 
1449             plg[1][1] = s;
1450             plg[1][2] =   3.0 * c * plg[1][1];
1451             plg[1][3] = ( 5.0 * c * plg[1][2] - 3.0 * plg[1][1]) / 2.0;
1452             plg[1][4] = ( 7.0 * c * plg[1][3] - 4.0 * plg[1][2]) / 3.0;
1453             plg[1][5] = ( 9.0 * c * plg[1][4] - 5.0 * plg[1][3]) / 4.0;
1454             plg[1][6] = (11.0 * c * plg[1][5] - 6.0 * plg[1][4]) / 5.0;
1455 
1456             plg[2][2] = 3.0 * s * plg[1][1];
1457             plg[2][3] =   5.0 * c * plg[2][2];
1458             plg[2][4] = ( 7.0 * c * plg[2][3] - 5.0 * plg[2][2]) / 2.0;
1459             plg[2][5] = ( 9.0 * c * plg[2][4] - 6.0 * plg[2][3]) / 3.0;
1460             plg[2][6] = (11.0 * c * plg[2][5] - 7.0 * plg[2][4]) / 4.0;
1461             plg[2][7] = (13.0 * c * plg[2][6] - 8.0 * plg[2][5]) / 5.0;
1462 
1463             plg[3][3] = 5.0 * s * plg[2][2];
1464             plg[3][4] =   7.0 * c * plg[3][3];
1465             plg[3][5] = ( 9.0 * c * plg[3][4] - 7.0 * plg[3][3]) / 2.0;
1466             plg[3][6] = (11.0 * c * plg[3][5] - 8.0 * plg[3][4]) / 3.0;
1467 
1468             // Calculate additional data
1469             if (!(sw[7] == 0 && sw[8] == 0 && sw[14] == 0)) {
1470                 final double tloc = HOUR_TO_RAD * hl;
1471                 final SinCos sc  = FastMath.sinCos(tloc);
1472                 final SinCos sc2 = SinCos.sum(sc, sc);
1473                 final SinCos sc3 = SinCos.sum(sc, sc2);
1474                 stloc  = sc.sin();
1475                 ctloc  = sc.cos();
1476                 s2tloc = sc2.sin();
1477                 c2tloc = sc2.cos();
1478                 s3tloc = sc3.sin();
1479                 c3tloc = sc3.cos();
1480             } else {
1481                 stloc  = 0;
1482                 ctloc  = 0;
1483                 s2tloc = 0;
1484                 c2tloc = 0;
1485                 s3tloc = 0;
1486                 c3tloc = 0;
1487             }
1488 
1489         }
1490 
1491         /** Calculate temperatures and densities not including anomalous oxygen.
1492          *  <p>
1493          *  This method is the thermospheric portion of NRLMSISE-00 for alt > 72.5 km.
1494          *  </p>
1495          *  <p>NOTES ON INPUT VARIABLES:<br>
1496          *  Seconds, Local Time, and Longitude are used independently in the
1497          *  model and are not of equal importance for every situation.<br>
1498          *  For the most physically realistic calculation these three
1499          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
1500          *  The Equation of Time departures from the above formula
1501          *  for apparent local time can be included if available but
1502          *  are of minor importance.<br><br>
1503          *
1504          *  f107 and f107A values used to generate the model correspond
1505          *  to the 10.7 cm radio flux at the actual distance of the Earth
1506          *  from the Sun rather than the radio flux at 1 AU. The following
1507          *  site provides both classes of values:<br>
1508          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br><br>
1509          *
1510          *  f107, f107A, and ap effects are neither large nor well established below 80 km
1511          *  and these parameters should be set to 150., 150., and 4. respectively.
1512          *  </p>
1513          *  @param alt altitude (km)
1514          */
1515         void gts7(final double alt) {
1516 
1517             // Thermal diffusion coefficients for species
1518             final double[] alpha = {-0.38, 0.0, 0.0, 0.0, 0.17, 0.0, -0.38, 0.0, 0.0};
1519             // Altitude limits for net density computation for species
1520             final double[] altl  = {200.0, 300.0, 160.0, 250.0, 240.0, 450.0, 320.0, 450.0};
1521             // N2 mixed density
1522             final double xmm = PDM[2][4];
1523 
1524             /**** Exospheric temperature ****/
1525             double tinf = PTM[0] * PT[0];
1526             // Tinf variations not important below ZA or ZN[0]
1527             if (alt > ZN1[0]) {
1528                 tinf *= 1.0 + sw[16] * globe7(PT);
1529             }
1530             setTemperature(EXOSPHERIC, tinf);
1531 
1532             // Gradient variations not important below ZN[4]
1533             double g0 = PTM[3] * PS[0];
1534             if (alt > ZN1[4]) {
1535                 g0 *= 1.0 + sw[19] * globe7(PS);
1536             }
1537 
1538             // Temperature at lower boundary
1539             double tlb = PTM[1] * PD[3][0];
1540             tlb *= 1.0 + sw[17] * globe7(PD[3]);
1541 
1542             // Slope
1543             final double s = g0 / (tinf - tlb);
1544 
1545             // Lower thermosphere temp variations not significant for density above 300 km
1546             meso_tn1[1]  = PTM[6] * PTL[0][0];
1547             meso_tn1[2]  = PTM[2] * PTL[1][0];
1548             meso_tn1[3]  = PTM[7] * PTL[2][0];
1549             meso_tn1[4]  = PTM[4] * PTL[3][0];
1550             meso_tgn1[1] = PTM[8] * PMA[8][0];
1551             if (alt < 300.0) {
1552                 final double r = PTM[4] * PTL[3][0];
1553                 meso_tn1[1]  /= 1.0 - sw[18] * glob7s(PTL[0]);
1554                 meso_tn1[2]  /= 1.0 - sw[18] * glob7s(PTL[1]);
1555                 meso_tn1[3]  /= 1.0 - sw[18] * glob7s(PTL[2]);
1556                 meso_tn1[4]  /= 1.0 - sw[18] * sw[20] * glob7s(PTL[3]);
1557                 meso_tgn1[1] *= 1.0 + sw[18] * sw[20] * glob7s(PMA[8]);
1558                 meso_tgn1[1] *= meso_tn1[4] * meso_tn1[4] / (r * r);
1559             }
1560 
1561             /**** Temperature at altitude ****/
1562             setTemperature(ALTITUDE, densu(alt, 1.0, tinf, tlb, 0.0, 0.0, PTM[5], s));
1563 
1564             /**** N2 density ****/
1565             /*   Density variation factor at Zlb */
1566             final double g28 = sw[21] * globe7(PD[2]);
1567             /* Diffusive density at Zlb */
1568             final double db28 = PDM[2][0] * FastMath.exp(g28) * PD[2][0];
1569             /* Diffusive density at Alt */
1570             double diffusiveDensity = densu(alt, db28, tinf, tlb, N2_MASS, alpha[2], PTM[5], s);
1571             setDensity(MOLECULAR_NITROGEN, diffusiveDensity);
1572             // Variation of turbopause height
1573             final double zhf = PDL[1][24] * (1.0 + sw[5] * PDL[0][24] *
1574                                        FastMath.sin(DEG_TO_RAD * lat) *
1575                                        FastMath.cos(DAY_TO_RAD * (doy - PT[13])));
1576             /* Turbopause */
1577             final double zh28  = PDM[2][2] * zhf;
1578             final double zhm28 = PDM[2][3] * PDL[1][5];
1579             /* Mixed density at Zlb */
1580             final double b28 = densu(zh28, db28, tinf, tlb, N2_MASS - xmm, alpha[2] - 1.0, PTM[5], s);
1581             if (sw[15] != 0 && alt <= altl[2]) {
1582                 /*  Mixed density at Alt */
1583                 dm28 = densu(alt, b28, tinf, tlb, xmm, alpha[2], PTM[5], s);
1584                 /*  Net density at Alt */
1585                 setDensity(MOLECULAR_NITROGEN, dnet(diffusiveDensity, dm28, zhm28, xmm, N2_MASS));
1586             }
1587 
1588             /**** He density ****/
1589             /*   Density variation factor at Zlb */
1590             final double g4 = sw[21] * globe7(PD[0]);
1591             /*  Diffusive density at Zlb */
1592             final double db04 = PDM[0][0] * FastMath.exp(g4) * PD[0][0];
1593             /*  Diffusive density at Alt */
1594             diffusiveDensity = densu(alt, db04, tinf, tlb, HE_MASS, alpha[0], PTM[5], s);
1595             setDensity(HELIUM, diffusiveDensity);
1596             if (sw[15] != 0 && alt < altl[0]) {
1597                 /*  Turbopause */
1598                 final double zh04 = PDM[0][2];
1599                 /*  Mixed density at Zlb */
1600                 final double b04 = densu(zh04, db04, tinf, tlb, HE_MASS - xmm, alpha[0] - 1., PTM[5], s);
1601                 /*  Mixed density at Alt */
1602                 final double dm04 = densu(alt, b04, tinf, tlb, xmm, 0., PTM[5], s);
1603                 final double zhm04 = zhm28;
1604                 /*  Net density at Alt */
1605                 diffusiveDensity = dnet(diffusiveDensity, dm04, zhm04, xmm, HE_MASS);
1606                 /*  Correction to specified mixing ratio at ground */
1607                 final double rl = FastMath.log(b28 * PDM[0][1] / b04);
1608                 final double zc04 = PDM[0][4] * PDL[1][0];
1609                 final double hc04 = PDM[0][5] * PDL[1][1];
1610                 /*  Net density corrected at Alt */
1611                 setDensity(HELIUM, diffusiveDensity * ccor(alt, rl, hc04, zc04));
1612             }
1613 
1614             /**** O density ****/
1615             /* Density variation factor at Zlb */
1616             final double g16 = sw[21] * globe7(PD[1]);
1617             /* Diffusive density at Zlb */
1618             final double db16 = PDM[1][0] * FastMath.exp(g16) * PD[1][0];
1619             /* Diffusive density at Alt */
1620             diffusiveDensity = densu(alt, db16, tinf, tlb, O_MASS, alpha[1], PTM[5], s);
1621             setDensity(ATOMIC_OXYGEN, diffusiveDensity);
1622             if (sw[15] != 0 && alt < altl[1]) {
1623                 /* Turbopause */
1624                 final double zh16 = PDM[1][2];
1625                 /* Mixed density at Zlb */
1626                 final double b16 = densu(zh16, db16, tinf, tlb, O_MASS - xmm, alpha[1] - 1.0, PTM[5], s);
1627                 /* Mixed density at Alt */
1628                 final double dm16 = densu(alt, b16, tinf, tlb, xmm, 0., PTM[5], s);
1629                 final double zhm16 = zhm28;
1630                 /* Net density at Alt */
1631                 diffusiveDensity = dnet(diffusiveDensity, dm16, zhm16, xmm, O_MASS);
1632                 final double rl = PDM[1][1] * PDL[1][16] * (1.0 + sw[1] * PDL[0][23] * (f107a - FLUX_REF));
1633                 final double hc16 = PDM[1][5] * PDL[1][3];
1634                 final double zc16 = PDM[1][4] * PDL[1][2];
1635                 final double hc216 = PDM[1][5] * PDL[1][4];
1636                 diffusiveDensity *= ccor2(alt, rl, hc16, zc16, hc216);
1637                 /* Chemistry correction */
1638                 final double hcc16 = PDM[1][7] * PDL[1][13];
1639                 final double zcc16 = PDM[1][6] * PDL[1][12];
1640                 final double rc16  = PDM[1][3] * PDL[1][14];
1641                 /* Net density corrected at Alt */
1642                 setDensity(ATOMIC_OXYGEN, diffusiveDensity * ccor(alt, rc16, hcc16, zcc16));
1643             }
1644 
1645             /**** O2 density ****/
1646             /* Density variation factor at Zlb */
1647             final double g32 = sw[21] * globe7(PD[4]);
1648             /* Diffusive density at Zlb */
1649             final double db32 = PDM[3][0] * FastMath.exp(g32) * PD[4][0];
1650             /* Diffusive density at Alt */
1651             diffusiveDensity = densu(alt, db32, tinf, tlb, O2_MASS, alpha[3], PTM[5], s);
1652             setDensity(MOLECULAR_OXYGEN, diffusiveDensity);
1653             if (sw[15] != 0) {
1654                 if (alt <= altl[3]) {
1655                     /* Turbopause */
1656                     final double zh32 = PDM[3][2];
1657                     /* Mixed density at Zlb */
1658                     final double b32 = densu(zh32, db32, tinf, tlb, O2_MASS - xmm, alpha[3] - 1., PTM[5], s);
1659                     /* Mixed density at Alt */
1660                     final double dm32 = densu(alt, b32, tinf, tlb, xmm, 0., PTM[5], s);
1661                     final double zhm32 = zhm28;
1662                     /* Net density at Alt */
1663                     diffusiveDensity = dnet(diffusiveDensity, dm32, zhm32, xmm, O2_MASS);
1664                     /* Correction to specified mixing ratio at ground */
1665                     final double rl = FastMath.log(b28 * PDM[3][1] / b32);
1666                     final double hc32 = PDM[3][5] * PDL[1][7];
1667                     final double zc32 = PDM[3][4] * PDL[1][6];
1668                     diffusiveDensity *= ccor(alt, rl, hc32, zc32);
1669                 }
1670                 /* Correction for general departure from diffusive equilibrium above Zlb */
1671                 final double hcc32  = PDM[3][7] * PDL[1][22];
1672                 final double hcc232 = PDM[3][7] * PDL[0][22];
1673                 final double zcc32  = PDM[3][6] * PDL[1][21];
1674                 final double rc32   = PDM[3][3] * PDL[1][23] * (1. + sw[1] * PDL[0][23] * (f107a - FLUX_REF));
1675                 /* Net density corrected at Alt */
1676                 setDensity(MOLECULAR_OXYGEN, diffusiveDensity * ccor2(alt, rc32, hcc32, zcc32, hcc232));
1677             }
1678 
1679             /**** Ar density ****/
1680             /* Density variation factor at Zlb */
1681             final double g40 = sw[21] * globe7(PD[5]);
1682             /* Diffusive density at Zlb */
1683             final double db40 = PDM[4][0] * FastMath.exp(g40) * PD[5][0];
1684             /* Diffusive density at Alt */
1685             diffusiveDensity = densu(alt, db40, tinf, tlb, AR_MASS, alpha[4], PTM[5], s);
1686             setDensity(ARGON, diffusiveDensity);
1687             if (sw[15] != 0 && alt <= altl[4]) {
1688                 /* Turbopause */
1689                 final double zh40 = PDM[4][2];
1690                 /* Mixed density at Zlb */
1691                 final double b40 = densu(zh40, db40, tinf, tlb, AR_MASS - xmm, alpha[4] - 1., PTM[5], s);
1692                 /* Mixed density at Alt */
1693                 final double dm40 = densu(alt, b40, tinf, tlb, xmm, 0., PTM[5], s);
1694                 final double zhm40 = zhm28;
1695                 /* Net density at Alt */
1696                 diffusiveDensity = dnet(diffusiveDensity, dm40, zhm40, xmm, AR_MASS);
1697                 /* Correction to specified mixing ratio at ground */
1698                 final double rl = FastMath.log(b28 * PDM[4][1] / b40);
1699                 final double hc40 = PDM[4][5] * PDL[1][9];
1700                 final double zc40 = PDM[4][4] * PDL[1][8];
1701                 /* Net density corrected at Alt */
1702                 setDensity(ARGON, diffusiveDensity * ccor(alt, rl, hc40, zc40));
1703             }
1704 
1705             /**** H density ****/
1706             /* Density variation factor at Zlb */
1707             final double g1 = sw[21] * globe7(PD[6]);
1708             /* Diffusive density at Zlb */
1709             final double db01 = PDM[5][0] * FastMath.exp(g1) * PD[6][0];
1710             /* Diffusive density at Alt */
1711             diffusiveDensity = densu(alt, db01, tinf, tlb, H_MASS, alpha[6], PTM[5], s);
1712             setDensity(HYDROGEN, diffusiveDensity);
1713             if (sw[15] != 0 && alt <= altl[6]) {
1714                 /* Turbopause */
1715                 final double zh01 = PDM[5][2];
1716                 /* Mixed density at Zlb */
1717                 final double b01 = densu(zh01, db01, tinf, tlb, H_MASS - xmm, alpha[6] - 1., PTM[5], s);
1718                 /* Mixed density at Alt */
1719                 final double dm01 = densu(alt, b01, tinf, tlb, xmm, 0., PTM[5], s);
1720                 final double zhm01 = zhm28;
1721                 /* Net density at Alt */
1722                 diffusiveDensity = dnet(diffusiveDensity, dm01, zhm01, xmm, H_MASS);
1723                 /* Correction to specified mixing ratio at ground */
1724                 final double rl = FastMath.log(b28 * PDM[5][1] * FastMath.sqrt(PDL[1][17] * PDL[1][17]) / b01);
1725                 final double hc01 = PDM[5][5] * PDL[1][11];
1726                 final double zc01 = PDM[5][4] * PDL[1][10];
1727                 diffusiveDensity *= ccor(alt, rl, hc01, zc01);
1728                 /* Chemistry correction */
1729                 final double hcc01 = PDM[5][7] * PDL[1][19];
1730                 final double zcc01 = PDM[5][6] * PDL[1][18];
1731                 final double rc01 = PDM[5][3] * PDL[1][20];
1732                 /* Net density corrected at Alt */
1733                 setDensity(HYDROGEN, diffusiveDensity * ccor(alt, rc01, hcc01, zcc01));
1734             }
1735 
1736             /**** N density ****/
1737             /* Density variation factor at Zlb */
1738             final double g14 = sw[21] * globe7(PD[7]);
1739             /* Diffusive density at Zlb */
1740             final double db14 = PDM[6][0] * FastMath.exp(g14) * PD[7][0];
1741             /* Diffusive density at Alt */
1742             diffusiveDensity = densu(alt, db14, tinf, tlb, N_MASS, alpha[7], PTM[5], s);
1743             setDensity(ATOMIC_NITROGEN, diffusiveDensity);
1744             if (sw[15] != 0 && alt <= altl[7]) {
1745                 /* Turbopause */
1746                 final double zh14 = PDM[6][2];
1747                 /* Mixed density at Zlb */
1748                 final double b14 = densu(zh14, db14, tinf, tlb, N_MASS - xmm, alpha[7] - 1., PTM[5], s);
1749                 /* Mixed density at Alt */
1750                 final double dm14 = densu(alt, b14, tinf, tlb, xmm, 0., PTM[5], s);
1751                 final double zhm14 = zhm28;
1752                 /* Net density at Alt */
1753                 diffusiveDensity = dnet(diffusiveDensity, dm14, zhm14, xmm, N_MASS);
1754                 /* Correction to specified mixing ratio at ground */
1755                 final double rl = FastMath.log(b28 * PDM[6][1] * PDL[0][2] / b14);
1756                 final double hc14 = PDM[6][5] * PDL[0][1];
1757                 final double zc14 = PDM[6][4] * PDL[0][0];
1758                 diffusiveDensity *= ccor(alt, rl, hc14, zc14);
1759                 /* Chemistry correction */
1760                 final double hcc14 = PDM[6][7] * PDL[0][4];
1761                 final double zcc14 = PDM[6][6] * PDL[0][3];
1762                 final double rc14 = PDM[6][3] * PDL[0][5];
1763                 /* Net density corrected at Alt */
1764                 setDensity(ATOMIC_NITROGEN, diffusiveDensity * ccor(alt, rc14, hcc14, zcc14));
1765             }
1766 
1767             /**** Anomalous O density ****/
1768             final double g16h  = sw[21] * globe7(PD[8]);
1769             final double db16h = PDM[7][0] * FastMath.exp(g16h) * PD[8][0];
1770             final double tho   = PDM[7][9] * PDL[0][6];
1771             diffusiveDensity = densu(alt, db16h, tho, tho, O_MASS, alpha[8], PTM[5], s);
1772             final double zsht = PDM[7][5];
1773             final double zmho = PDM[7][4];
1774             final double zsho = scalh(zmho, O_MASS, tho);
1775             diffusiveDensity *= FastMath.exp(-zsht / zsho * (FastMath.exp((zmho - alt ) / zsht) - 1.));
1776             setDensity(ANOMALOUS_OXYGEN, diffusiveDensity);
1777 
1778             // Convert densities from cm-3 to m-3
1779             for (int i = 0; i < 9; i++) {
1780                 setDensity(i, getDensity(i) * 1.0e+06);
1781             }
1782 
1783             /**** Total mass density ****/
1784             final double tmd = AMU * (HE_MASS * getDensity(HELIUM) +
1785                                       O_MASS  * getDensity(ATOMIC_OXYGEN) +
1786                                       N2_MASS * getDensity(MOLECULAR_NITROGEN) +
1787                                       O2_MASS * getDensity(MOLECULAR_OXYGEN) +
1788                                       AR_MASS * getDensity(ARGON) +
1789                                       H_MASS  * getDensity(HYDROGEN) +
1790                                       N_MASS  * getDensity(ATOMIC_NITROGEN));
1791             setDensity(TOTAL_MASS, tmd);
1792 
1793         }
1794 
1795         /** Calculate temperatures and densities not including anomalous oxygen.
1796          *  <p>NOTES ON INPUT VARIABLES:<br>
1797          *  Seconds, Local Time, and Longitude are used independently in the
1798          *  model and are not of equal importance for every situation.<br>
1799          *  For the most physically realistic calculation these three
1800          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
1801          *  The Equation of Time departures from the above formula
1802          *  for apparent local time can be included if available but
1803          *  are of minor importance.<br><br>
1804          *
1805          *  f107 and f107A values used to generate the model correspond
1806          *  to the 10.7 cm radio flux at the actual distance of the Earth
1807          *  from the Sun rather than the radio flux at 1 AU. The following
1808          *  site provides both classes of values:<br>
1809          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br><br>
1810          *
1811          *  f107, f107A, and ap effects are neither large nor well established below 80 km
1812          *  and these parameters should be set to 150., 150., and 4. respectively.
1813          *  </p>
1814          *  @param alt altitude (km)
1815          */
1816         void gtd7(final double alt) {
1817 
1818             // Calculates for thermosphere/mesosphere (above ZN2[0])
1819             final double altt = (alt > ZN2[0]) ? alt : ZN2[0];
1820             gts7(altt);
1821             if (alt >= ZN2[0]) {
1822                 return;
1823             }
1824 
1825             // Calculates for lower mesosphere/upper stratosphere (between ZN2[0] and ZN3[0]):
1826             // Temperature at nodes and gradients at end nodes
1827             // Inverse temperature a linear function of spherical harmonics
1828             final double r = PMA[2][0] * PAVGM[2];
1829             meso_tgn2[0] = meso_tgn1[1];
1830             meso_tn2[0]  = meso_tn1[4];
1831             meso_tn2[1]  = PMA[0][0] * PAVGM[0] / (1.0 - sw[20] * glob7s(PMA[0]));
1832             meso_tn2[2]  = PMA[1][0] * PAVGM[1] / (1.0 - sw[20] * glob7s(PMA[1]));
1833             meso_tn2[3]  = PMA[2][0] * PAVGM[2] / (1.0 - sw[20] * sw[22] * glob7s(PMA[2]));
1834             meso_tgn2[1] = PMA[9][0] * PAVGM[8] * (1.0 + sw[20] * sw[22] * glob7s(PMA[9])) *
1835                            meso_tn2[3] * meso_tn2[3] / (r * r);
1836             meso_tn3[0]  = meso_tn2[3];
1837 
1838             // Calculates for lower stratosphere and troposphere (below ZN3[0])
1839             // Temperature at nodes and gradients at end nodes
1840             // Inverse temperature a linear function of spherical harmonics
1841             if (alt <= ZN3[0]) {
1842                 final double q = PMA[6][0] * PAVGM[6];
1843                 meso_tgn3[0] = meso_tgn2[1];
1844                 meso_tn3[1]  = PMA[3][0] * PAVGM[3] / (1.0 - sw[22] * glob7s(PMA[3]));
1845                 meso_tn3[2]  = PMA[4][0] * PAVGM[4] / (1.0 - sw[22] * glob7s(PMA[4]));
1846                 meso_tn3[3]  = PMA[5][0] * PAVGM[5] / (1.0 - sw[22] * glob7s(PMA[5]));
1847                 meso_tn3[4]  = PMA[6][0] * PAVGM[6] / (1.0 - sw[22] * glob7s(PMA[6]));
1848                 meso_tgn3[1] = PMA[7][0] * PAVGM[7] * (1.0 + sw[22] * glob7s(PMA[7])) *
1849                                meso_tn3[4] * meso_tn3[4] / (q * q);
1850 
1851             }
1852 
1853             // Linear transition to full mixing below ZN2[0]
1854             final double dmc = (alt > ZMIX) ? 1.0 - (ZN2[0] - alt) / (ZN2[0] - ZMIX) : 0.;
1855             final double dz28 = getDensity(MOLECULAR_NITROGEN);
1856 
1857             // N2 density
1858             final double dm28m = dm28 * 1.0e+06;
1859             double dmr = dz28 / dm28m - 1.0;
1860             double dst = densm(alt, dm28m, PDM[2][4]) * (1.0 + dmr * dmc);
1861             setDensity(MOLECULAR_NITROGEN, dst);
1862 
1863             // HE density
1864             dmr = getDensity(HELIUM) / (dz28 * PDM[0][1]) - 1.0;
1865             dst = getDensity(MOLECULAR_NITROGEN) * PDM[0][1] * (1.0 + dmr * dmc);
1866             setDensity(HELIUM, dst);
1867 
1868             // O density
1869             setDensity(ATOMIC_OXYGEN, 0.);
1870             setDensity(ANOMALOUS_OXYGEN, 0.);
1871 
1872             // O2 density
1873             dmr = getDensity(MOLECULAR_OXYGEN) / (dz28 * PDM[3][1]) - 1.0;
1874             dst = getDensity(MOLECULAR_NITROGEN) * PDM[3][1] * (1.0 + dmr * dmc);
1875             setDensity(MOLECULAR_OXYGEN, dst);
1876 
1877             // AR density
1878             dmr = getDensity(ARGON) / (dz28 * PDM[4][1]) - 1.0;
1879             dst = getDensity(MOLECULAR_NITROGEN) * PDM[4][1] * (1.0 + dmr * dmc);
1880             setDensity(ARGON, dst);
1881 
1882             // H density
1883             setDensity(HYDROGEN, 0.);
1884 
1885             // N density
1886             setDensity(ATOMIC_NITROGEN, 0.);
1887 
1888             // Total mass density
1889             final double tmd = AMU * (HE_MASS * getDensity(HELIUM) +
1890                                       O_MASS  * getDensity(ATOMIC_OXYGEN) +
1891                                       N2_MASS * getDensity(MOLECULAR_NITROGEN) +
1892                                       O2_MASS * getDensity(MOLECULAR_OXYGEN) +
1893                                       AR_MASS * getDensity(ARGON) +
1894                                       H_MASS  * getDensity(HYDROGEN) +
1895                                       N_MASS  * getDensity(ATOMIC_NITROGEN));
1896             setDensity(TOTAL_MASS, tmd);
1897 
1898             // Temperature at altitude
1899             setTemperature(ALTITUDE, densm(alt, 1.0, 0));
1900 
1901         }
1902 
1903         /** Calculate temperatures and densities including anomalous oxygen.
1904          *  <p></p>
1905          *  <p>NOTES ON INPUT VARIABLES:<br>
1906          *  Seconds, Local Time, and Longitude are used independently in the
1907          *  model and are not of equal importance for every situation.<br>
1908          *  For the most physically realistic calculation these three
1909          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
1910          *  The Equation of Time departures from the above formula
1911          *  for apparent local time can be included if available but
1912          *  are of minor importance.<br>
1913          *  <br>
1914          *  f107 and f107A values used to generate the model correspond
1915          *  to the 10.7 cm radio flux at the actual distance of the Earth
1916          *  from the Sun rather than the radio flux at 1 AU. The following
1917          *  site provides both classes of values:<br>
1918          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br>
1919          *  <br>
1920          *  f107, f107A, and ap effects are neither large nor well established below 80 km
1921          *  and these parameters should be set to 150., 150., and 4. respectively.
1922          *  </p>
1923          *  @param alt altitude (km)
1924          */
1925         void gtd7d(final double alt) {
1926 
1927             // Compute densities and temperatures
1928             gtd7(alt);
1929 
1930             // Update the total mass density with anomalous oxygen contribution
1931             final double dTot = getDensity(TOTAL_MASS) + AMU * O_MASS * getDensity(ANOMALOUS_OXYGEN);
1932             setDensity(TOTAL_MASS, dTot);
1933 
1934         }
1935 
1936         /** Set one density.
1937          * @param index one of the nine elements :
1938          * <ul>
1939          * <li>{@link #HELIUM}</li>
1940          * <li>{@link #ATOMIC_OXYGEN}</li>
1941          * <li>{@link #MOLECULAR_NITROGEN}</li>
1942          * <li>{@link #MOLECULAR_OXYGEN}</li>
1943          * <li>{@link #ARGON}</li>
1944          * <li>{@link #TOTAL_MASS}</li>
1945          * <li>{@link #HYDROGEN}</li>
1946          * <li>{@link #ATOMIC_NITROGEN}</li>
1947          * <li>{@link #ATOMIC_NITROGEN}</li>
1948          * </ul>
1949          * @param d the value of density to set
1950          */
1951         void setDensity(final int index, final double d) {
1952             densities[index] = d;
1953         }
1954 
1955         /** Set one temperature.
1956          * @param index one of the two elements :
1957          * <ul>
1958          * <li>{@link #EXOSPHERIC}</li>
1959          * <li>{@link #ALTITUDE}</li>
1960          * </ul>
1961          * @param t the value of temperature to set
1962          */
1963         void setTemperature(final int index, final double t) {
1964             temperatures[index] = t;
1965         }
1966 
1967         /** Get one of the stored densities.
1968          * @param index one of the nine elements :
1969          * <ul>
1970          * <li>{@link #HELIUM}</li>
1971          * <li>{@link #ATOMIC_OXYGEN}</li>
1972          * <li>{@link #MOLECULAR_NITROGEN}</li>
1973          * <li>{@link #MOLECULAR_OXYGEN}</li>
1974          * <li>{@link #ARGON}</li>
1975          * <li>{@link #TOTAL_MASS}</li>
1976          * <li>{@link #HYDROGEN}</li>
1977          * <li>{@link #ATOMIC_NITROGEN}</li>
1978          * <li>{@link #ATOMIC_NITROGEN}</li>
1979          * </ul>
1980          * @return the requested density
1981          */
1982         public double getDensity(final int index) {
1983             return densities[index];
1984         }
1985 
1986         /** Calculate G(L) function with upper thermosphere parameters.
1987          *  @param p array of parameters
1988          *  @return G(L) value
1989          */
1990         private double globe7(final double[] p) {
1991 
1992             final double[] t = new double[14];
1993             final double cd32 = FastMath.cos(DAY_TO_RAD * (doy - p[31]));
1994             final double cd18 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[17]));
1995             final double cd14 = FastMath.cos(DAY_TO_RAD * (doy - p[13]));
1996             final double cd39 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[38]));
1997 
1998             // F10.7 effect
1999             final double df  = f107  - f107a;
2000             final double dfa = f107a - FLUX_REF;
2001             t[0] = p[19] * df * (1.0 + p[59] * dfa) + p[20] * df * df + p[21] * dfa + p[29] * dfa * dfa;
2002 
2003             final double f1 = 1.0 + (p[47] * dfa + p[19] * df + p[20] * df * df) * swc[1];
2004             final double f2 = 1.0 + (p[49] * dfa + p[19] * df + p[20] * df * df) * swc[1];
2005 
2006             // Time independent
2007             t[1] = (p[1]  * plg[0][2] + p[2] * plg[0][4] + p[22] * plg[0][6]) +
2008                    (p[14] * plg[0][2]) * dfa * swc[1] + p[26] * plg[0][1];
2009 
2010             // Symmetrical annual
2011             t[2] = p[18] * cd32;
2012 
2013             // Symmetrical semiannual
2014             t[3] = (p[15] + p[16] * plg[0][2]) * cd18;
2015 
2016             // Asymmetrical annual
2017             t[4] = f1 * (p[9] * plg[0][1] + p[10] * plg[0][3]) * cd14;
2018 
2019             // Asymmetrical semiannual
2020             t[5] = p[37] * plg[0][1] * cd39;
2021 
2022             // Diurnal
2023             if (sw[7] != 0) {
2024                 final double t71 = (p[11] * plg[1][2]) * cd14 * swc[5];
2025                 final double t72 = (p[12] * plg[1][2]) * cd14 * swc[5];
2026                 t[6] = f2 * ((p[3] * plg[1][1] + p[4] * plg[1][3] + p[27] * plg[1][5] + t71) * ctloc +
2027                              (p[6] * plg[1][1] + p[7] * plg[1][3] + p[28] * plg[1][5] + t72) * stloc);
2028             }
2029 
2030             // Semidiurnal
2031             if (sw[8] != 0) {
2032                 final double t81 = (p[23] * plg[2][3] + p[35] * plg[2][5]) * cd14 * swc[5];
2033                 final double t82 = (p[33] * plg[2][3] + p[36] * plg[2][5]) * cd14 * swc[5];
2034                 t[7] = f2 * ((p[5] * plg[2][2] + p[41] * plg[2][4] + t81) * c2tloc +
2035                              (p[8] * plg[2][2] + p[42] * plg[2][4] + t82) * s2tloc);
2036             }
2037 
2038             // Terdiurnal
2039             if (sw[14] != 0) {
2040                 t[13] = f2 * ((p[39] * plg[3][3] + (p[93] * plg[3][4] + p[46] * plg[3][6]) * cd14 * swc[5]) * s3tloc +
2041                               (p[40] * plg[3][3] + (p[94] * plg[3][4] + p[48] * plg[3][6]) * cd14 * swc[5]) * c3tloc);
2042             }
2043 
2044             // magnetic activity based on daily ap
2045             if (sw[9] == -1) {
2046                 if (p[51] != 0) {
2047                     final double exp1 = FastMath.exp(-10800.0 * FastMath.abs(p[51]) /
2048                                                      (1.0 + p[138] * (LAT_REF - FastMath.abs(lat))));
2049                     final double p24 = FastMath.max(p[24], 1.0e-4);
2050                     apt = sg0(FastMath.min(exp1, 0.99999), p24, p[25]);
2051                     t[8] = apt * (p[50] + p[96] * plg[0][2] + p[54] * plg[0][4] +
2052                                   (p[125] * plg[0][1] + p[126] * plg[0][3] + p[127] * plg[0][5]) * cd14 * swc[5] +
2053                                   (p[128] * plg[1][1] + p[129] * plg[1][3] + p[130] * plg[1][5]) * swc[7] *
2054                                   FastMath.cos(HOUR_TO_RAD * (hl - p[131])));
2055                 }
2056             } else {
2057                 final double apd = ap[0] - 4.0;
2058                 final double p44 = (p[43] < 0.) ? 1.0E-5 : p[43];
2059                 final double p45 = p[44];
2060                 apdf = apd + (p45 - 1.0) * (apd + (FastMath.exp(-p44 * apd) - 1.0) / p44);
2061                 if (sw[9] != 0) {
2062                     t[8] = apdf * (p[32] + p[45] * plg[0][2] + p[34] * plg[0][4] +
2063                                    (p[100] * plg[0][1] + p[101] * plg[0][3] + p[102] * plg[0][5]) * cd14 * swc[5] +
2064                                    (p[121] * plg[1][1] + p[122] * plg[1][3] + p[123] * plg[1][5]) * swc[7] *
2065                                    FastMath.cos(HOUR_TO_RAD * (hl - p[124])));
2066                 }
2067             }
2068 
2069             if (sw[10] != 0) {
2070                 final double lonr   = DEG_TO_RAD * lon;
2071                 final SinCos scLonr = FastMath.sinCos(lonr);
2072                 // Longitudinal
2073                 if (sw[11] != 0) {
2074                     t[10] = (1.0 + p[80] * dfa * swc[1]) *
2075                             ((p[64]  * plg[1][2] + p[65]  * plg[1][4] + p[66]  * plg[1][6] +
2076                               p[103] * plg[1][1] + p[104] * plg[1][3] + p[105] * plg[1][5] +
2077                              (p[109] * plg[1][1] + p[110] * plg[1][3] + p[111] * plg[1][5]) * swc[5] * cd14) *
2078                              scLonr.cos() +
2079                              (p[90]  * plg[1][2] + p[91]  * plg[1][4] + p[92]  * plg[1][6] +
2080                               p[106] * plg[1][1] + p[107] * plg[1][3] + p[108] * plg[1][5] +
2081                              (p[112] * plg[1][1] + p[113] * plg[1][3] + p[114] * plg[1][5]) * swc[5] * cd14) *
2082                              scLonr.sin());
2083                 }
2084 
2085                 // ut and mixed ut, longitude
2086                 if (sw[12] != 0) {
2087                     t[11] = (1.0 + p[95]  * plg[0][1]) * (1.0 + p[81] * dfa * swc[1]) *
2088                             (1.0 + p[119] * plg[0][1] * swc[5] * cd14) *
2089                             (p[68] * plg[0][1] + p[69] * plg[0][3] + p[70] * plg[0][5]) *
2090                             FastMath.cos(SEC_TO_RAD * (sec - p[71]));
2091                     t[11] += swc[11] * (1.0 + p[137] * dfa * swc[1]) *
2092                             (p[76] * plg[2][3] + p[77] * plg[2][5] + p[78] * plg[2][7]) *
2093                             FastMath.cos(SEC_TO_RAD * (sec - p[79]) + 2.0 * lonr);
2094                 }
2095 
2096                 /* ut, longitude magnetic activity */
2097                 if (sw[13] != 0) {
2098                     if (sw[9] == -1) {
2099                         if (p[51] != 0.) {
2100                             t[12] = apt * swc[11] * (1. + p[132] * plg[0][1]) *
2101                                     (p[52] * plg[1][2] + p[98] * plg[1][4] + p[67] * plg[1][6]) *
2102                                     FastMath.cos(DEG_TO_RAD * (lon - p[97])) +
2103                                     apt * swc[11] * swc[5] * cd14 *
2104                                     (p[133] * plg[1][1] + p[134] * plg[1][3] + p[135] * plg[1][5]) *
2105                                     FastMath.cos(DEG_TO_RAD * (lon - p[136])) +
2106                                     apt * swc[12] *
2107                                     (p[55] * plg[0][1] + p[56] * plg[0][3] + p[57] * plg[0][5]) *
2108                                     FastMath.cos(SEC_TO_RAD * (sec - p[58]));
2109                         }
2110                     } else {
2111                         t[12] = apdf * swc[11] * (1.0 + p[120] * plg[0][1]) *
2112                                 ((p[60] * plg[1][2] + p[61] * plg[1][4] + p[62] * plg[1][6]) *
2113                                 FastMath.cos(DEG_TO_RAD * (lon - p[63]))) +
2114                                 apdf * swc[11] * swc[5] * cd14 *
2115                                 (p[115] * plg[1][1] + p[116] * plg[1][3] + p[117] * plg[1][5]) *
2116                                 FastMath.cos(DEG_TO_RAD * (lon - p[118])) +
2117                                 apdf * swc[12] *
2118                                 (p[83] * plg[0][1] + p[84] * plg[0][3] + p[85] * plg[0][5]) *
2119                                 FastMath.cos(SEC_TO_RAD * (sec - p[75]));
2120                     }
2121                 }
2122             }
2123 
2124             // Sum all effects (params not used: 82, 89, 99, 139-149)
2125             double tinf = p[30];
2126             for (int i = 0; i < 14; i++) {
2127                 tinf += FastMath.abs(sw[i + 1]) * t[i];
2128             }
2129 
2130             // Return G(L)
2131             return tinf;
2132 
2133         }
2134 
2135         /** Calculate G(L) function with lower atmosphere parameters.
2136          *  @param p array of parameters
2137          *  @return G(L) value
2138          */
2139         private double glob7s(final double[] p) {
2140 
2141             final double[] t = new double[14];
2142             final double cd32 = FastMath.cos(DAY_TO_RAD * (doy - p[31]));
2143             final double cd18 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[17]));
2144             final double cd14 = FastMath.cos(DAY_TO_RAD * (doy - p[13]));
2145             final double cd39 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[38]));
2146 
2147             // F10.7 effect
2148             t[0] = p[21] * (f107a - FLUX_REF);
2149 
2150             // Time independent
2151             t[1] = p[1]  * plg[0][2] + p[2]  * plg[0][4] + p[22] * plg[0][6] +
2152                    p[26] * plg[0][1] + p[14] * plg[0][3] + p[59] * plg[0][5];
2153 
2154             // Symmetrical annual
2155             t[2] = (p[18] + p[47] * plg[0][2] + p[29] * plg[0][4]) * cd32;
2156 
2157             // Symmetrical semiannual
2158             t[3] = (p[15] + p[16] * plg[0][2] + p[30] * plg[0][4]) * cd18;
2159 
2160             // Asymmetrical annual
2161             t[4] = (p[9] * plg[0][1] + p[10] * plg[0][3] + p[20] * plg[0][5]) * cd14;
2162 
2163             // Asymmetrical semiannual
2164             t[5] = (p[37] * plg[0][1]) * cd39;
2165 
2166             // Diurnal
2167             if (sw[7] != 0) {
2168                 final double t71 = p[11] * plg[1][2] * cd14 * swc[5];
2169                 final double t72 = p[12] * plg[1][2] * cd14 * swc[5];
2170                 t[6] = (p[3] * plg[1][1] + p[4] * plg[1][3] + t71) * ctloc +
2171                        (p[6] * plg[1][1] + p[7] * plg[1][3] + t72) * stloc;
2172             }
2173 
2174             // Semidiurnal
2175             if (sw[8] != 0) {
2176                 final double t81 = (p[23] * plg[2][3] + p[35] * plg[2][5]) * cd14 * swc[5];
2177                 final double t82 = (p[33] * plg[2][3] + p[36] * plg[2][5]) * cd14 * swc[5];
2178                 t[7] = (p[5] * plg[2][2] + p[41] * plg[2][4] + t81) * c2tloc +
2179                        (p[8] * plg[2][2] + p[42] * plg[2][4] + t82) * s2tloc;
2180             }
2181 
2182             // Terdiurnal
2183             if (sw[14] != 0) {
2184                 t[13] = p[39] * plg[3][3] * s3tloc + p[40] * plg[3][3] * c3tloc;
2185             }
2186 
2187             // Magnetic activity
2188             if (sw[9] == 1) {
2189                 t[8] = apdf * (p[32] + p[45] * plg[0][2] * swc[2]);
2190             } else if (sw[9] == -1) {
2191                 t[8] = apt  * (p[50] + p[96] * plg[0][2] * swc[2]);
2192             }
2193 
2194             // Longitudinal
2195             if (!(sw[10] == 0 || sw[11] == 0)) {
2196                 final double lonr   = DEG_TO_RAD * lon;
2197                 final SinCos scLonr = FastMath.sinCos(lonr);
2198                 t[10] = (1.0 + plg[0][1] * (p[80] * swc[5] * FastMath.cos(DAY_TO_RAD * (doy - p[81])) +
2199                                             p[85] * swc[6] * FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[86]))) +
2200                                p[83] * swc[3] * FastMath.cos(DAY_TO_RAD * (doy - p[84])) +
2201                                p[87] * swc[4] * FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[88]))) *
2202                         ((p[64] * plg[1][2] + p[65] * plg[1][4] + p[66] * plg[1][6] +
2203                           p[74] * plg[1][1] + p[75] * plg[1][3] + p[76] * plg[1][5]) * scLonr.cos() +
2204                          (p[90] * plg[1][2] + p[91] * plg[1][4] + p[92] * plg[1][6] +
2205                           p[77] * plg[1][1] + p[78] * plg[1][3] + p[79] * plg[1][5]) * scLonr.sin());
2206             }
2207 
2208             // Sum all effects
2209             double gl = 0;
2210             for (int i = 0; i < 14; i++) {
2211                 gl += FastMath.abs(sw[i + 1]) * t[i];
2212             }
2213 
2214             // Return G(L)
2215             return gl;
2216         }
2217 
2218         /** Implements sg0 function (Eq. A24a).
2219          * @param ex ex
2220          * @param p24 abs(p[24])
2221          * @param p25 p[25]
2222          * @return sg0
2223          */
2224         private double sg0(final double ex, final double p24, final double p25) {
2225             final double g01 = g0(ap[1], p24, p25);
2226             final double g02 = g0(ap[2], p24, p25);
2227             final double g03 = g0(ap[3], p24, p25);
2228             final double g04 = g0(ap[4], p24, p25);
2229             final double g05 = g0(ap[5], p24, p25);
2230             final double g06 = g0(ap[6], p24, p25);
2231             final double ex2 = ex * ex;
2232             final double ex3 = ex * ex2;
2233             final double ex4 = ex2 * ex2;
2234             final double ex8 = ex4 * ex4;
2235             final double ex12 = ex4 * ex8;
2236             final double g234 = g02 * ex + g03 * ex2 + g04 * ex3;
2237             final double g56  = g05 * ex4 + g06 * ex12;
2238             final double ex19 = ex3 * ex4 * ex12;
2239             final double omex = 1.0 - ex;
2240             final double sumex = 1.0 + (1.0 - ex19) / omex * FastMath.sqrt(ex);
2241             return (g01 + (g234 + g56 * (1.0 - ex8) / omex)) / sumex;
2242         }
2243 
2244         /** Implements go function (Eq. A24d).
2245          * @param apI 3 hrs ap
2246          * @param p24 abs(p[24])
2247          * @param p25 p[25]
2248          * @return go
2249          */
2250         private double g0(final double apI, final double p24, final double p25) {
2251             final double am4 = apI - 4.0;
2252             return am4 + (p25 - 1.0) * (am4 + (FastMath.exp(-p24 * am4) - 1.0) / p24);
2253         }
2254 
2255         /** Calculates chemistry/dissociation correction for MSIS models.
2256          * @param alt altitude
2257          * @param r target ratio
2258          * @param h1 transition scale length
2259          * @param zh altitude of 1/2 R
2260          * @return correction
2261          */
2262         private double ccor(final double alt, final double r, final double h1, final double zh) {
2263             final double e = (alt - zh) / h1;
2264             if (e > 70.) {
2265                 return 1.;
2266             } else if (e < -70.) {
2267                 return FastMath.exp(r);
2268             } else {
2269                 return FastMath.exp(r / (1.0 + FastMath.exp(e)));
2270             }
2271         }
2272 
2273 
2274         /** Calculates O & O2 chemistry/dissociation correction for MSIS models.
2275          * @param alt altitude
2276          * @param r target ratio
2277          * @param h1 transition scale length
2278          * @param zh altitude of 1/2 R
2279          * @param h2 transition scale length
2280          * @return correction
2281          */
2282         private double ccor2(final double alt, final double r,
2283                              final double h1, final double zh, final double h2) {
2284             final double e1 = (alt - zh) / h1;
2285             final double e2 = (alt - zh) / h2;
2286             if (e1 > 70. || e2 > 70.) {
2287                 return 1.;
2288             } else if (e1 < -70. && e2 < -70.) {
2289                 return FastMath.exp(r);
2290             } else {
2291                 final double ex1 = FastMath.exp(e1);
2292                 final double ex2 = FastMath.exp(e2);
2293                 return FastMath.exp(r / (1.0 + 0.5 * (ex1 + ex2)));
2294             }
2295         }
2296 
2297         /** Calculates scale height.
2298          * @param alt altitude
2299          * @param xm species molecular weight
2300          * @param temp temperature
2301          * @return scale height (km)
2302          */
2303         private double scalh(final double alt, final double xm, final double temp) {
2304             // Gravity at altitude
2305             final double denom = 1.0 + alt / rlat;
2306             final double galt = glat / (denom * denom);
2307             return R_GAS * temp / (galt * xm);
2308         }
2309 
2310         /** Calculates turbopause correction for MSIS models.
2311          * @param dd diffusive density
2312          * @param dm full mixed density
2313          * @param zhm transition scale length
2314          * @param xmm full mixed molecular weight
2315          * @param xm species molecular weight
2316          * @return combined density
2317          */
2318         private double dnet(final double dd, final double dm,
2319                             final double zhm, final double xmm, final double xm) {
2320             if (!(dm > 0 && dd > 0)) {
2321                 double ddd = dd;
2322                 if (dd == 0 && dm == 0) {
2323                     ddd = 1;
2324                 }
2325                 if (dm == 0) {
2326                     return ddd;
2327                 }
2328                 if (dd == 0) {
2329                     return dm;
2330                 }
2331             }
2332 
2333             final double a  = zhm / (xmm - xm);
2334             final double ylog = a * FastMath.log(dm / dd);
2335             if (ylog < -10.) {
2336                 return dd;
2337             } else if (ylog > 10.) {
2338                 return dm;
2339             } else {
2340                 return dd * FastMath.pow(1.0 + FastMath.exp(ylog), 1.0 / a);
2341             }
2342         }
2343 
2344         /** Integrate cubic spline function from xa[0] to x.
2345          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
2346          * @param xa array of abscissas in ascending order
2347          * @param ya array of ordinates in ascending order by xa
2348          * @param y2a array of second derivatives in ascending order by xa
2349          * @param x abscissa end point
2350          * @return integral value
2351          */
2352         private double splini(final double[] xa, final double[] ya, final double[] y2a, final double x) {
2353             final int n = xa.length;
2354             double yi = 0;
2355             int klo = 0;
2356             int khi = 1;
2357             while (x > xa[klo] && khi < n) {
2358                 double xx = x;
2359                 if (khi < n - 1) {
2360                     xx = (x < xa[khi]) ? x : xa[khi];
2361                 }
2362                 final double h = xa[khi] - xa[klo];
2363                 final double a = (xa[khi] - xx) / h;
2364                 final double b = (xx - xa[klo]) / h;
2365                 final double a2 = a * a;
2366                 final double b2 = b * b;
2367                 yi += ((1.0 - a2) * ya[klo] / 2.0 + b2 * ya[khi] / 2.0 +
2368                        ((-(1.0 + a2 * a2) / 4.0 + a2 / 2.0) * y2a[klo] +
2369                           (b2 * b2 / 4.0 - b2 / 2.0) * y2a[khi]) * h * h / 6.0) * h;
2370                 klo++;
2371                 khi++;
2372             }
2373             return yi;
2374         }
2375 
2376         /** Calculate cubic spline interpolated value.
2377          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
2378          * @param xa array of abscissas in ascending order
2379          * @param ya array of ordinates in ascending order by xa
2380          * @param y2a array of second derivatives in ascending order by xa
2381          * @param x abscissa for interpolation
2382          * @return interpolated value
2383          */
2384         private double splint(final double[] xa, final double[] ya, final double[] y2a, final double x) {
2385             final int n = xa.length;
2386             int klo = 0;
2387             int khi = n - 1;
2388             while (khi - klo > 1) {
2389                 final int k = (khi + klo) >>> 1;
2390                 if (xa[k] > x) {
2391                     khi = k;
2392                 } else {
2393                     klo = k;
2394                 }
2395             }
2396             final double h = xa[khi] - xa[klo];
2397             final double a = (xa[khi] - x) / h;
2398             final double b = (x - xa[klo]) / h;
2399             return a * ya[klo] + b * ya[khi] +
2400                     ((a * a * a - a) * y2a[klo] + (b * b * b - b) * y2a[khi]) * h * h / 6.0;
2401         }
2402 
2403         /** Calculate 2nd derivatives of cubic spline interpolation function.
2404          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
2405          * @param x array of abscissas in ascending order
2406          * @param y array of ordinates in ascending order by x
2407          * @param yp1 derivative at x[0] (2nd derivatives null if > 1E30)
2408          * @param ypn derivative at x[n-1] (2nd derivatives null if > 1E30)
2409          * @return array of second derivatives
2410          */
2411         private double[] spline(final double[] x, final double[] y, final double yp1, final double ypn) {
2412             final int n = x.length;
2413             final double[] y2 = new double[n];
2414             final double[] u  = new double[n];
2415 
2416             if (yp1 < 1e+30) {
2417                 y2[0] = -0.5;
2418                 u[0]  = (3.0 / (x[1] - x[0])) * ((y[1] - y[0]) / (x[1] - x[0]) - yp1);
2419             }
2420             for (int i = 1; i < n - 1; i++) {
2421                 final double sig = (x[i] - x[i - 1]) / (x[i + 1] - x[i - 1]);
2422                 final double p = sig * y2[i - 1] + 2.0;
2423                 y2[i] = (sig - 1.0) / p;
2424                 u[i] = (6.0 * ((y[i + 1] - y[i]) / (x[i + 1] - x[i]) - (y[i] - y[i - 1]) / (x[i] - x[i - 1])) /
2425                         (x[i + 1] - x[i - 1]) - sig * u[i - 1]) / p;
2426             }
2427 
2428             double qn = 0;
2429             double un = 0;
2430             if (ypn < 1e+30) {
2431                 qn = 0.5;
2432                 un = (3.0 / (x[n - 1] - x[n - 2])) * (ypn - (y[n - 1] - y[n - 2]) / (x[n - 1] - x[n - 2]));
2433             }
2434 
2435             y2[n - 1] = (un - qn * u[n - 2]) / (qn * y2[n - 2] + 1.0);
2436             for (int k = n - 2; k >= 0; k--) {
2437                 y2[k] = y2[k] * y2[k + 1] + u[k];
2438             }
2439 
2440             return y2;
2441         }
2442 
2443         /** Calculate Temperature and Density Profiles for lower atmosphere.
2444          * @param alt altitude
2445          * @param d0 density
2446          * @param xm mixed density
2447          * @return temperature or density profile
2448          */
2449         private double densm(final double alt, final double d0, final double xm) {
2450 
2451             double densm = d0;
2452 
2453             // stratosphere/mesosphere temperature
2454             int mn = ZN2.length;
2455             double z = (alt > ZN2[mn - 1]) ? alt : ZN2[mn - 1];
2456 
2457             double z1 = ZN2[0];
2458             double z2 = ZN2[mn - 1];
2459             double t1 = meso_tn2[0];
2460             double t2 = meso_tn2[mn - 1];
2461             double zg  = zeta(z, z1);
2462             double zgdif = zeta(z2, z1);
2463 
2464             /* set up spline nodes */
2465             double[] xs = new double[mn];
2466             double[] ys = new double[mn];
2467             for (int k = 0; k < mn; k++) {
2468                 xs[k] = zeta(ZN2[k], z1) / zgdif;
2469                 ys[k] = 1.0 / meso_tn2[k];
2470             }
2471             final double qSM = (rlat + z2) / (rlat + z1);
2472             double yd1 = -meso_tgn2[0] / (t1 * t1) * zgdif;
2473             double yd2 = -meso_tgn2[1] / (t2 * t2) * zgdif * qSM * qSM;
2474 
2475             /* calculate spline coefficients */
2476             double[] y2out = spline(xs, ys, yd1, yd2);
2477             double x = zg / zgdif;
2478             double y = splint(xs, ys, y2out, x);
2479 
2480             /* temperature at altitude */
2481             double tz = 1.0 / y;
2482 
2483             if (xm != 0.0) {
2484                 /* calculate stratosphere / mesospehere density */
2485                 final double glb  = galt(z1);
2486                 final double gamm = xm * glb * zgdif / R_GAS;
2487 
2488                 /* Integrate temperature profile */
2489                 final double yi = splini(xs, ys, y2out, x);
2490                 final double expl = FastMath.min(MIN_TEMP, gamm * yi);
2491 
2492                 /* Density at altitude */
2493                 densm *= (t1 / tz) * FastMath.exp(-expl);
2494             }
2495 
2496             if (alt > ZN3[0]) {
2497                 return (xm == 0.0) ? tz : densm;
2498             }
2499 
2500             // troposhere/stratosphere temperature
2501             z = alt;
2502             mn = ZN3.length;
2503             z1 = ZN3[0];
2504             z2 = ZN3[mn - 1];
2505             t1 = meso_tn3[0];
2506             t2 = meso_tn3[mn - 1];
2507             zg = zeta(z, z1);
2508             zgdif = zeta(z2, z1);
2509 
2510             /* set up spline nodes */
2511             xs = new double[mn];
2512             ys = new double[mn];
2513             for (int k = 0; k < mn; k++) {
2514                 xs[k] = zeta(ZN3[k], z1) / zgdif;
2515                 ys[k] = 1.0 / meso_tn3[k];
2516             }
2517             final double qTS = (rlat + z2) / (rlat + z1);
2518             yd1 = -meso_tgn3[0] / (t1 * t1) * zgdif;
2519             yd2 = -meso_tgn3[1] / (t2 * t2) * zgdif * qTS * qTS;
2520 
2521             /* calculate spline coefficients */
2522             y2out = spline(xs, ys, yd1, yd2);
2523             x = zg / zgdif;
2524             y = splint(xs, ys, y2out, x);
2525 
2526             /* temperature at altitude */
2527             tz = 1.0 / y;
2528 
2529             if (xm != 0.0) {
2530                 /* calculate tropospheric / stratosphere density */
2531                 final double glb = galt(z1);
2532                 final double gamm = xm * glb * zgdif / R_GAS;
2533 
2534                 /* Integrate temperature profile */
2535                 final double yi = splini(xs, ys, y2out, x);
2536                 final double expl = FastMath.min(MIN_TEMP, gamm * yi);
2537 
2538                 /* Density at altitude */
2539                 densm *= (t1 / tz) * FastMath.exp(-expl);
2540             }
2541 
2542             return (xm == 0.0) ? tz : densm;
2543         }
2544 
2545         /** Calculate temperature and density profiles according to new lower thermo polynomial.
2546          * @param alt altitude
2547          * @param dlb density at lower boundary
2548          * @param tinf exospheric temperature
2549          * @param tlb temperature at lower boundary
2550          * @param xm species molecular weight
2551          * @param alpha thermal diffusion coefficient
2552          * @param zlb altitude of the lower boundary
2553          * @param s2 slope
2554          * @return temperature or density profile
2555          */
2556         private double densu(final double alt, final double dlb, final double tinf,
2557                              final double tlb, final double xm, final double alpha,
2558                              final double zlb, final double s2) {
2559             /* joining altitudes of Bates and spline */
2560             double z = (alt > ZN1[0]) ? alt : ZN1[0];
2561 
2562             /* geopotential altitude difference from ZLB */
2563             final double zg2 = zeta(z, zlb);
2564 
2565             /* Bates temperature */
2566             final double tt = tinf - (tinf - tlb) * FastMath.exp(-s2 * zg2);
2567             final double ta = tt;
2568             double tz = tt;
2569 
2570             final int mn = ZN1.length;
2571             final double[] xs = new double[mn];
2572             final double[] ys = new double[mn];
2573             double x = 0.;
2574             double[] y2out =  new double[mn];
2575             double zgdif = 0.;
2576             if (alt < ZN1[0]) {
2577                 /* calculate temperature below ZA
2578                  * temperature gradient at ZA from Bates profile */
2579                 final double p = (rlat + zlb) / (rlat + ZN1[0]);
2580                 final double dta = (tinf - ta) * s2 * p * p;
2581                 meso_tgn1[0] = dta;
2582                 meso_tn1[0] = ta;
2583                 z = (alt > ZN1[mn - 1]) ? alt : ZN1[mn - 1];
2584 
2585                 final double t1 = meso_tn1[0];
2586                 final double t2 = meso_tn1[mn - 1];
2587                 /* geopotental difference from z1 */
2588                 final double zg = zeta(z, ZN1[0]);
2589                 zgdif = zeta(ZN1[mn - 1], ZN1[0]);
2590                 /* set up spline nodes */
2591                 for (int k = 0; k < mn; k++) {
2592                     xs[k] = zeta(ZN1[k], ZN1[0]) / zgdif;
2593                     ys[k] = 1.0 / meso_tn1[k];
2594                 }
2595                 /* end node derivatives */
2596                 final double q   = (rlat + ZN1[mn - 1]) / (rlat + ZN1[0]);
2597                 final double yd1 = -meso_tgn1[0] / (t1 * t1) * zgdif;
2598                 final double yd2 = -meso_tgn1[1] / (t2 * t2) * zgdif * q * q;
2599                 /* calculate spline coefficients */
2600                 y2out = spline(xs, ys, yd1, yd2);
2601                 x = zg / zgdif;
2602                 final double y = splint(xs, ys, y2out, x);
2603                 /* temperature at altitude */
2604                 tz = 1.0 / y;
2605             }
2606 
2607             if (xm == 0) {
2608                 return tz;
2609             }
2610 
2611             /* calculate density above za */
2612             double glb   = galt(zlb);
2613             double gamma = xm * glb / (R_GAS * s2 * tinf);
2614             double expl  = (tt <= 0) ? MIN_TEMP : FastMath.min(MIN_TEMP, FastMath.exp(-s2 * gamma * zg2));
2615             double densu = dlb * expl * FastMath.pow(tlb / tt, 1.0 + alpha + gamma);
2616 
2617             // Correction for issue 1365 - protection against "densu" being infinite
2618             if (!Double.isFinite(densu)) {
2619                 if (expl < MIN_TEMP) {
2620                     densu = dlb * FastMath.exp(FastMath.log(tlb / tt) * (1.0 + alpha + gamma) - s2 * gamma * zg2);
2621                 } else {
2622                     throw new OrekitException( OrekitMessages.INFINITE_NRLMSISE00_DENSITY);
2623                 }
2624             }
2625 
2626             /* calculate density below za */
2627             if (alt < ZN1[0]) {
2628                 glb   = galt(ZN1[0]);
2629                 gamma = xm * glb * zgdif / R_GAS;
2630                 /* integrate spline temperatures */
2631                 expl  = (tz <= 0) ? MIN_TEMP : FastMath.min(MIN_TEMP, gamma * splini(xs, ys, y2out, x));
2632                 /* correct density at altitude */
2633                 densu *= FastMath.pow(meso_tn1[0] / tz, 1.0 + alpha) * FastMath.exp(-expl);
2634             }
2635 
2636             /* Return density at altitude */
2637             return densu;
2638         }
2639 
2640         /** Calculate gravity at altitude.
2641          * @param alt altitude (km)
2642          * @return gravity at altitude (cm/s2)
2643          */
2644         private double galt(final double alt) {
2645             final double r = 1.0 + alt / rlat;
2646             return glat / (r * r);
2647         }
2648 
2649         /** Calculate zeta function.
2650          * @param zz zz value
2651          * @param zl zl value
2652          * @return value of zeta function
2653          */
2654         private double zeta(final double zz, final double zl) {
2655             return (zz - zl) * (rlat + zl) / (rlat + zz);
2656         }
2657 
2658     }
2659 
2660     /**
2661      * This class is a placeholder for the computed densities and temperatures.
2662      * <p>
2663      * Densities are provided as an array d such as:
2664      * <ul>
2665      * <li>d[0] = He number density (1/m³)</li>
2666      * <li>d[1] = O number density (1/m³)</li>
2667      * <li>d[2] = N2 number density (1/m³)</li>
2668      * <li>d[3] = O2 number density (1/m³)</li>
2669      * <li>d[4] = Ar number density (1/m³)</li>
2670      * <li>d[5] = total mass density (kg/m³) (*)</li>
2671      * <li>d[6] = H number density (1/m³)</li>
2672      * <li>d[7] = N number density (1/m³)</li>
2673      * <li>d[8] = anomalous oxygen number density (1/m³)
2674      * </ul>
2675      * Total mass density, d[5], is NOT the same for methods gtd7 and gtd7d:
2676      * <ul>
2677      * <li>For gtd7: d[5] is the sum of the mass densities of the species
2678      * He, O, N2, O2, Ar, H and N but does NOT include anomalous oxygen.</li>
2679      * <li>For gtd7d: d[5] is the "effective total mass density for drag" and is the sum
2680      * of the mass densities of all species in this model, INCLUDING anomalous oxygen.</li>
2681      * </ul>
2682      * O, H, and N are set to zero below 72.5 km.
2683      * <p>
2684      * Temperatures are provided as an array t such as:
2685      * <ul>
2686      * <li>t[0] = exospheric temperature (K)</li>
2687      * <li>t[1] = temperature at altitude (K)</li>
2688      * </ul>
2689      * <p>
2690      * t[0] is set to global average for altitudes below 120 km.<br>
2691      * The 120 km gradient is left at global average value for altitudes below 72 km.
2692      * </p>
2693      * @param <T> type of the field elements
2694      * @since 9.0
2695      */
2696     public class FieldOutput<T extends CalculusFieldElement<T>> {
2697 
2698         /** Type of the field elements. */
2699         private final Field<T> field;
2700 
2701         /** Zero for the field. */
2702         private final T zero;
2703 
2704         /** Day of year (from 1 to 365 or 366). */
2705         private final int doy;
2706 
2707         /** Seconds in day (UT scale). */
2708         private final T sec;
2709 
2710         /** Geodetic latitude (°). */
2711         private final T lat;
2712 
2713         /** Geodetic longitude (°). */
2714         private final T lon;
2715 
2716         /** Local apparent solar time (hours). */
2717         private final T hl;
2718 
2719         /** 81 day average of F10.7 flux (centered on day). */
2720         private final double f107a;
2721 
2722         /** Daily F10.7 flux for previous day. */
2723         private final double f107;
2724 
2725         /** Array containing:
2726         *  <ul>
2727         *  <li>0: daily Ap</li>
2728         *  <li>1: 3 hr ap index for current time</li>
2729         *  <li>2: 3 hr ap index for 3 hrs before current time</li>
2730         *  <li>3: 3 hr ap index for 6 hrs before current time</li>
2731         *  <li>4: 3 hr ap index for FOR 9 hrs before current time</li>
2732         *  <li>5: average of eight 3 hr ap indices from 12 to 33 hrs prior to current time</li>
2733         *  <li>6: average of eight 3 hr ap indices from 36 to 57 hrs prior to current time</li>
2734         *  </ul>. */
2735         private final double[] ap;
2736 
2737         /** Gravity at latitude (cm/s2). */
2738         private final T glat;
2739 
2740         /** Effective Earth radius at latitude (km). */
2741         private final T rlat;
2742 
2743         /** N2 mixed density at alt. */
2744         private T dm28;
2745 
2746         /** Legendre polynomials. */
2747         private final T[][] plg;
2748 
2749         /** Cosinus of local solar time. */
2750         private final T ctloc;
2751         /** Sinus of local solar time. */
2752         private final T stloc;
2753         /** Square of ctloc. */
2754         private final T c2tloc;
2755         /** Square of stloc. */
2756         private final T s2tloc;
2757         /** Cube of ctloc. */
2758         private final T c3tloc;
2759         /** Cube of stloc. */
2760         private final T s3tloc;
2761 
2762         /** Magnetic activity based on daily ap. */
2763         private double apdf;
2764 
2765         /** Magnetic activity based on daily ap. */
2766         private T apt;
2767 
2768         /** Temperature at nodes for ZN1 scale. */
2769         private final T[] meso_tn1;
2770 
2771         /** Temperature at nodes for ZN2 scale. */
2772         private final T[] meso_tn2;
2773 
2774         /** Temperature at nodes for ZN3 scale. */
2775         private final T[] meso_tn3;
2776 
2777         /** Temperature gradients at end nodes for ZN1 scale. */
2778         private final T[] meso_tgn1;
2779 
2780         /** Temperature gradients at end nodes for ZN2 scale. */
2781         private final T[] meso_tgn2;
2782 
2783         /** Temperature gradients at end nodes for ZN3 scale. */
2784         private final T[] meso_tgn3;
2785 
2786         /** Densities. */
2787         private final T[] densities;
2788 
2789         /** Temperatures. */
2790         private final T[] temperatures;
2791 
2792         /** Simple constructor.
2793          *  @param doy day of year (from 1 to 365 or 366)
2794          *  @param sec seconds in day (UT scale)
2795          *  @param lat geodetic latitude (°)
2796          *  @param lon geodetic longitude (°)
2797          *  @param hl local apparent solar time (hours)
2798          *  @param f107a 81 day average of F10.7 flux (centered on day)
2799          *  @param f107 daily F10.7 flux for previous day
2800          *  @param ap array containing:
2801          *  <ul>
2802          *  <li>0: daily Ap</li>
2803          *  <li>1: 3 hr ap index for current time</li>
2804          *  <li>2: 3 hr ap index for 3 hrs before current time</li>
2805          *  <li>3: 3 hr ap index for 6 hrs before current time</li>
2806          *  <li>4: 3 hr ap index for FOR 9 hrs before current time</li>
2807          *  <li>5: average of eight 3 hr ap indices from 12 to 33 hrs prior to current time</li>
2808          *  <li>6: average of eight 3 hr ap indices from 36 to 57 hrs prior to current time</li>
2809          *  </ul>
2810          */
2811         FieldOutput(final int doy, final T sec,
2812                     final T lat, final T lon, final T hl,
2813                     final double f107a, final double f107, final double[] ap) {
2814 
2815             this.field = sec.getField();
2816             this.zero = field.getZero();
2817 
2818             this.doy   = doy;
2819             this.sec   = sec;
2820             this.lat   = lat;
2821             this.lon   = lon;
2822             this.hl    = hl;
2823             this.f107a = f107a;
2824             this.f107  = f107;
2825             this.ap    = ap.clone();
2826 
2827             this.plg       = MathArrays.buildArray(field, 4, 8);
2828 
2829             this.meso_tn1  = MathArrays.buildArray(field, ZN1.length);
2830             this.meso_tn2  = MathArrays.buildArray(field, ZN2.length);
2831             this.meso_tn3  = MathArrays.buildArray(field, ZN3.length);
2832             this.meso_tgn1 = MathArrays.buildArray(field, 2);
2833             this.meso_tgn2 = MathArrays.buildArray(field, 2);
2834             this.meso_tgn3 = MathArrays.buildArray(field, 2);
2835 
2836             densities       = MathArrays.buildArray(field, 9);
2837             temperatures    = MathArrays.buildArray(field, 2);
2838 
2839             // Calculates latitude variable gravity and effective radius
2840             final T xlat = (sw[2] == 0) ? zero.newInstance(LAT_REF) : lat;
2841             final T c2   = xlat.multiply(2 * DEG_TO_RAD).cos();
2842             glat = c2.multiply(-0.0026373).add(1).multiply(G_REF);
2843             rlat = glat.multiply(2).divide(c2.multiply(2.27e-9).add(3.085462e-6)).multiply(1.e-5);
2844 
2845             // Convert latitude into radians
2846             final T latr = lat.multiply(DEG_TO_RAD);
2847 
2848             // Calculate legendre polynomials
2849             final FieldSinCos<T> scLatr = FastMath.sinCos(latr);
2850             final T c = scLatr.sin();
2851             final T s = scLatr.cos();
2852 
2853             plg[0][1] = c;
2854             plg[0][2] = c.multiply( 3.0).multiply(plg[0][1]).subtract(1.0).divide(2.0);
2855             plg[0][3] = c.multiply( 5.0).multiply(plg[0][2]).subtract(plg[0][1].multiply(2.0)).divide(3.0);
2856             plg[0][4] = c.multiply( 7.0).multiply(plg[0][3]).subtract(plg[0][2].multiply(3.0)).divide(4.0);
2857             plg[0][5] = c.multiply( 9.0).multiply(plg[0][4]).subtract(plg[0][3].multiply(4.0)).divide(5.0);
2858             plg[0][6] = c.multiply(11.0).multiply(plg[0][5]).subtract(plg[0][4].multiply(5.0)).divide(6.0);
2859 
2860             plg[1][1] = s;
2861             plg[1][2] = c.multiply( 3.0).multiply(plg[1][1]);
2862             plg[1][3] = c.multiply( 5.0).multiply(plg[1][2]).subtract(plg[1][1].multiply(3.0)).divide(2.0);
2863             plg[1][4] = c.multiply( 7.0).multiply(plg[1][3]).subtract(plg[1][2].multiply(4.0)).divide(3.0);
2864             plg[1][5] = c.multiply( 9.0).multiply(plg[1][4]).subtract(plg[1][3].multiply(5.0)).divide(4.0);
2865             plg[1][6] = c.multiply(11.0).multiply(plg[1][5]).subtract(plg[1][4].multiply(6.0)).divide(5.0);
2866 
2867             plg[2][2] = s.multiply( 3.0).multiply(plg[1][1]);
2868             plg[2][3] = c.multiply( 5.0).multiply(plg[2][2]);
2869             plg[2][4] = c.multiply( 7.0).multiply(plg[2][3]).subtract(plg[2][2].multiply(5.0)).divide(2.0);
2870             plg[2][5] = c.multiply( 9.0).multiply(plg[2][4]).subtract(plg[2][3].multiply(6.0)).divide(3.0);
2871             plg[2][6] = c.multiply(11.0).multiply(plg[2][5]).subtract(plg[2][4].multiply(7.0)).divide(4.0);
2872             plg[2][7] = c.multiply(13.0).multiply(plg[2][6]).subtract(plg[2][5].multiply(8.0)).divide(5.0);
2873 
2874             plg[3][3] = s.multiply( 5.0).multiply(plg[2][2]);
2875             plg[3][4] = c.multiply( 7.0).multiply(plg[3][3]);
2876             plg[3][5] = c.multiply( 9.0).multiply(plg[3][4]).subtract(plg[3][3].multiply(7.0)).divide(2.0);
2877             plg[3][6] = c.multiply(11.0).multiply(plg[3][5]).subtract(plg[3][4].multiply(8.0)).divide(3.0);
2878 
2879             // Calculate additional data
2880             if (!(sw[7] == 0 && sw[8] == 0 && sw[14] == 0)) {
2881                 final T tloc = hl.multiply(HOUR_TO_RAD);
2882                 final FieldSinCos<T> sc  = FastMath.sinCos(tloc);
2883                 final FieldSinCos<T> sc2 = FieldSinCos.sum(sc, sc);
2884                 final FieldSinCos<T> sc3 = FieldSinCos.sum(sc, sc2);
2885                 stloc  = sc.sin();
2886                 ctloc  = sc.cos();
2887                 s2tloc = sc2.sin();
2888                 c2tloc = sc2.cos();
2889                 s3tloc = sc3.sin();
2890                 c3tloc = sc3.cos();
2891             } else {
2892                 stloc  = zero;
2893                 ctloc  = zero;
2894                 s2tloc = zero;
2895                 c2tloc = zero;
2896                 s3tloc = zero;
2897                 c3tloc = zero;
2898             }
2899 
2900         }
2901 
2902         /** Calculate temperatures and densities not including anomalous oxygen.
2903          *  <p>
2904          *  This method is the thermospheric portion of NRLMSISE-00 for alt > 72.5 km.
2905          *  </p>
2906          *  <p>NOTES ON INPUT VARIABLES:<br>
2907          *  Seconds, Local Time, and Longitude are used independently in the
2908          *  model and are not of equal importance for every situation.<br>
2909          *  For the most physically realistic calculation these three
2910          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
2911          *  The Equation of Time departures from the above formula
2912          *  for apparent local time can be included if available but
2913          *  are of minor importance.<br><br>
2914          *
2915          *  f107 and f107A values used to generate the model correspond
2916          *  to the 10.7 cm radio flux at the actual distance of the Earth
2917          *  from the Sun rather than the radio flux at 1 AU. The following
2918          *  site provides both classes of values:<br>
2919          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br><br>
2920          *
2921          *  f107, f107A, and ap effects are neither large nor well established below 80 km
2922          *  and these parameters should be set to 150., 150., and 4. respectively.
2923          *  </p>
2924          *  @param alt altitude (km)
2925          */
2926         void gts7(final T alt) {
2927 
2928             // Thermal diffusion coefficients for species
2929             final double[] alpha = {-0.38, 0.0, 0.0, 0.0, 0.17, 0.0, -0.38, 0.0, 0.0};
2930             // Altitude limits for net density computation for species
2931             final double[] altl  = {200.0, 300.0, 160.0, 250.0, 240.0, 450.0, 320.0, 450.0};
2932             // N2 mixed density
2933             final double xmm = PDM[2][4];
2934 
2935             /**** Exospheric temperature ****/
2936             T tinf = zero.newInstance(PTM[0] * PT[0]);
2937             // Tinf variations not important below ZA or ZN[0]
2938             if (alt.getReal() > ZN1[0]) {
2939                 tinf = tinf.multiply(globe7(PT).multiply(sw[16]).add(1));
2940             }
2941             setTemperature(EXOSPHERIC, tinf);
2942 
2943             // Gradient variations not important below ZN[4]
2944             T g0 = zero.newInstance(PTM[3] * PS[0]);
2945             if (alt.getReal() > ZN1[4]) {
2946                 g0 = g0.multiply(globe7(PS).multiply(sw[19]).add(1));
2947             }
2948 
2949             // Temperature at lower boundary
2950             T tlb = zero.newInstance(PTM[1] * PD[3][0]);
2951             tlb = tlb.multiply(globe7(PD[3]).multiply(sw[17]).add(1));
2952 
2953             // Slope
2954             final T s = g0.divide(tinf.subtract(tlb));
2955 
2956             // Lower thermosphere temp variations not significant for density above 300 km
2957             meso_tn1[1]  = zero.newInstance(PTM[6] * PTL[0][0]);
2958             meso_tn1[2]  = zero.newInstance(PTM[2] * PTL[1][0]);
2959             meso_tn1[3]  = zero.newInstance(PTM[7] * PTL[2][0]);
2960             meso_tn1[4]  = zero.newInstance(PTM[4] * PTL[3][0]);
2961             meso_tgn1[1] = zero.newInstance(PTM[8] * PMA[8][0]);
2962             if (alt.getReal() < 300.0) {
2963                 final double r = PTM[4] * PTL[3][0];
2964                 meso_tn1[1]  =  meso_tn1[1].divide(glob7s(PTL[0]).multiply(sw[18]         ).negate().add(1));
2965                 meso_tn1[2]  =  meso_tn1[2].divide(glob7s(PTL[1]).multiply(sw[18]         ).negate().add(1));
2966                 meso_tn1[3]  =  meso_tn1[3].divide(glob7s(PTL[2]).multiply(sw[18]         ).negate().add(1));
2967                 meso_tn1[4]  =  meso_tn1[4].divide(glob7s(PTL[3]).multiply(sw[18] * sw[20]).negate().add(1));
2968                 meso_tgn1[1] =  meso_tgn1[1].multiply(glob7s(PMA[8]).multiply(sw[18] * sw[20]).add(1));
2969                 meso_tgn1[1] =  meso_tgn1[1].multiply(meso_tn1[4].multiply(meso_tn1[4]).divide(r * r));
2970             }
2971 
2972             /**** Temperature at altitude ****/
2973             setTemperature(ALTITUDE, densu(alt, zero.newInstance(1.0), tinf, tlb, 0, 0, PTM[5], s));
2974 
2975             /**** N2 density ****/
2976             /*   Density variation factor at Zlb */
2977             final T g28 = globe7(PD[2]).multiply(sw[21]);
2978             /* Diffusive density at Zlb */
2979             final T db28 = g28.exp().multiply(PDM[2][0] * PD[2][0]);
2980             /* Diffusive density at Alt */
2981             T diffusiveDensity = densu(alt, db28, tinf, tlb, N2_MASS, alpha[2], PTM[5], s);
2982             setDensity(MOLECULAR_NITROGEN, diffusiveDensity);
2983             // Variation of turbopause height
2984             final T zhf = lat.multiply(DEG_TO_RAD).sin().
2985                             multiply(sw[5] * PDL[0][24] * FastMath.cos(DAY_TO_RAD * (doy - PT[13]))).
2986                             add(1).
2987                             multiply(PDL[1][24]);
2988             /* Turbopause */
2989             final T zh28  = zhf.multiply(PDM[2][2]);
2990             final double zhm28 = PDM[2][3] * PDL[1][5];
2991             /* Mixed density at Zlb */
2992             final T b28 = densu(zh28, db28, tinf, tlb, N2_MASS - xmm, alpha[2] - 1.0, PTM[5], s);
2993             if (sw[15] != 0 && alt.getReal() <= altl[2]) {
2994                 /*  Mixed density at Alt */
2995                 dm28 = densu(alt, b28, tinf, tlb, xmm, alpha[2], PTM[5], s);
2996                 /*  Net density at Alt */
2997                 setDensity(MOLECULAR_NITROGEN, dnet(diffusiveDensity, dm28, zhm28, xmm, N2_MASS));
2998             } else {
2999                 dm28 = zero;
3000             }
3001 
3002             /**** He density ****/
3003             /*   Density variation factor at Zlb */
3004             final T g4 = globe7(PD[0]).multiply(sw[21]);
3005             /*  Diffusive density at Zlb */
3006             final T db04 = g4.exp().multiply(PDM[0][0] * PD[0][0]);
3007             /*  Diffusive density at Alt */
3008             diffusiveDensity = densu(alt, db04, tinf, tlb, HE_MASS, alpha[0], PTM[5], s);
3009             setDensity(HELIUM, diffusiveDensity);
3010             if (sw[15] != 0 && alt.getReal() < altl[0]) {
3011                 /*  Turbopause */
3012                 final double zh04 = PDM[0][2];
3013                 /*  Mixed density at Zlb */
3014                 final T b04 = densu(zero.newInstance(zh04), db04, tinf, tlb, HE_MASS - xmm, alpha[0] - 1., PTM[5], s);
3015                 /*  Mixed density at Alt */
3016                 final T dm04 = densu(alt, b04, tinf, tlb, xmm, 0., PTM[5], s);
3017                 final double zhm04 = zhm28;
3018                 /*  Net density at Alt */
3019                 diffusiveDensity = dnet(diffusiveDensity, dm04, zhm04, xmm, HE_MASS);
3020                 /*  Correction to specified mixing ratio at ground */
3021                 final T rl = b28.multiply(PDM[0][1]).divide(b04).log();
3022                 final double zc04 = PDM[0][4] * PDL[1][0];
3023                 final double hc04 = PDM[0][5] * PDL[1][1];
3024                 /*  Net density corrected at Alt */
3025                 setDensity(HELIUM, diffusiveDensity.multiply(ccor(alt, rl, hc04, zc04)));
3026             }
3027 
3028             /**** O density ****/
3029             /* Density variation factor at Zlb */
3030             final T g16 = globe7(PD[1]).multiply(sw[21]);
3031             /* Diffusive density at Zlb */
3032             final T db16 = g16.exp().multiply(PDM[1][0] * PD[1][0]);
3033             /* Diffusive density at Alt */
3034             diffusiveDensity = densu(alt, db16, tinf, tlb, O_MASS, alpha[1], PTM[5], s);
3035             setDensity(ATOMIC_OXYGEN, diffusiveDensity);
3036             if (sw[15] != 0 && alt.getReal() < altl[1]) {
3037                 /* Turbopause */
3038                 final double zh16 = PDM[1][2];
3039                 /* Mixed density at Zlb */
3040                 final T b16 = densu(zero.newInstance(zh16), db16, tinf, tlb, O_MASS - xmm, alpha[1] - 1.0, PTM[5], s);
3041                 /* Mixed density at Alt */
3042                 final T dm16 = densu(alt, b16, tinf, tlb, xmm, 0., PTM[5], s);
3043                 final double zhm16 = zhm28;
3044                 /* Net density at Alt */
3045                 diffusiveDensity = dnet(diffusiveDensity, dm16, zhm16, xmm, O_MASS);
3046                 final double rl = PDM[1][1] * PDL[1][16] * (1.0 + sw[1] * PDL[0][23] * (f107a - FLUX_REF));
3047                 final double hc16 = PDM[1][5] * PDL[1][3];
3048                 final double zc16 = PDM[1][4] * PDL[1][2];
3049                 final double hc216 = PDM[1][5] * PDL[1][4];
3050                 diffusiveDensity = diffusiveDensity.multiply(ccor2(alt, rl, hc16, zc16, hc216));
3051                 /* Chemistry correction */
3052                 final double hcc16 = PDM[1][7] * PDL[1][13];
3053                 final double zcc16 = PDM[1][6] * PDL[1][12];
3054                 final double rc16  = PDM[1][3] * PDL[1][14];
3055                 /* Net density corrected at Alt */
3056                 setDensity(ATOMIC_OXYGEN, diffusiveDensity.multiply(ccor(alt, zero.newInstance(rc16), hcc16, zcc16)));
3057             }
3058 
3059             /**** O2 density ****/
3060             /* Density variation factor at Zlb */
3061             final T g32 = globe7(PD[4]).multiply(sw[21]);
3062             /* Diffusive density at Zlb */
3063             final T db32 = g32.exp().multiply(PDM[3][0] * PD[4][0]);
3064             /* Diffusive density at Alt */
3065             diffusiveDensity = densu(alt, db32, tinf, tlb, O2_MASS, alpha[3], PTM[5], s);
3066             setDensity(MOLECULAR_OXYGEN, diffusiveDensity);
3067             if (sw[15] != 0) {
3068                 if (alt.getReal() <= altl[3]) {
3069                     /* Turbopause */
3070                     final double zh32 = PDM[3][2];
3071                     /* Mixed density at Zlb */
3072                     final T b32 = densu(zero.newInstance(zh32), db32, tinf, tlb, O2_MASS - xmm, alpha[3] - 1., PTM[5], s);
3073                     /* Mixed density at Alt */
3074                     final T dm32 = densu(alt, b32, tinf, tlb, xmm, 0., PTM[5], s);
3075                     final double zhm32 = zhm28;
3076                     /* Net density at Alt */
3077                     diffusiveDensity = dnet(diffusiveDensity, dm32, zhm32, xmm, O2_MASS);
3078                     /* Correction to specified mixing ratio at ground */
3079                     final T rl = b28.multiply(PDM[3][1]).divide(b32).log();
3080                     final double hc32 = PDM[3][5] * PDL[1][7];
3081                     final double zc32 = PDM[3][4] * PDL[1][6];
3082                     diffusiveDensity = diffusiveDensity.multiply(ccor(alt, rl, hc32, zc32));
3083                 }
3084                 /* Correction for general departure from diffusive equilibrium above Zlb */
3085                 final double hcc32  = PDM[3][7] * PDL[1][22];
3086                 final double hcc232 = PDM[3][7] * PDL[0][22];
3087                 final double zcc32  = PDM[3][6] * PDL[1][21];
3088                 final double rc32   = PDM[3][3] * PDL[1][23] * (1. + sw[1] * PDL[0][23] * (f107a - FLUX_REF));
3089                 /* Net density corrected at Alt */
3090                 setDensity(MOLECULAR_OXYGEN, diffusiveDensity.multiply(ccor2(alt, rc32, hcc32, zcc32, hcc232)));
3091             }
3092 
3093             /**** Ar density ****/
3094             /* Density variation factor at Zlb */
3095             final T g40 = globe7(PD[5]).multiply(sw[21]);
3096             /* Diffusive density at Zlb */
3097             final T db40 = g40.exp().multiply(PDM[4][0] * PD[5][0]);
3098             /* Diffusive density at Alt */
3099             diffusiveDensity = densu(alt, db40, tinf, tlb, AR_MASS, alpha[4], PTM[5], s);
3100             setDensity(ARGON, diffusiveDensity);
3101             if (sw[15] != 0 && alt.getReal() <= altl[4]) {
3102                 /* Turbopause */
3103                 final double zh40 = PDM[4][2];
3104                 /* Mixed density at Zlb */
3105                 final T b40 = densu(zero.newInstance(zh40), db40, tinf, tlb, AR_MASS - xmm, alpha[4] - 1., PTM[5], s);
3106                 /* Mixed density at Alt */
3107                 final T dm40 = densu(alt, b40, tinf, tlb, xmm, 0., PTM[5], s);
3108                 final double zhm40 = zhm28;
3109                 /* Net density at Alt */
3110                 diffusiveDensity = dnet(diffusiveDensity, dm40, zhm40, xmm, AR_MASS);
3111                 /* Correction to specified mixing ratio at ground */
3112                 final T rl = b28.multiply(PDM[4][1]).divide(b40).log();
3113                 final double hc40 = PDM[4][5] * PDL[1][9];
3114                 final double zc40 = PDM[4][4] * PDL[1][8];
3115                 /* Net density corrected at Alt */
3116                 setDensity(ARGON, diffusiveDensity.multiply(ccor(alt, rl, hc40, zc40)));
3117             }
3118 
3119             /**** H density ****/
3120             /* Density variation factor at Zlb */
3121             final T g1 = globe7(PD[6]).multiply(sw[21]);
3122             /* Diffusive density at Zlb */
3123             final T db01 = g1.exp().multiply(PDM[5][0] * PD[6][0]);
3124             /* Diffusive density at Alt */
3125             diffusiveDensity = densu(alt, db01, tinf, tlb, H_MASS, alpha[6], PTM[5], s);
3126             setDensity(HYDROGEN, diffusiveDensity);
3127             if (sw[15] != 0 && alt.getReal() <= altl[6]) {
3128                 /* Turbopause */
3129                 final double zh01 = PDM[5][2];
3130                 /* Mixed density at Zlb */
3131                 final T b01 = densu(zero.newInstance(zh01), db01, tinf, tlb, H_MASS - xmm, alpha[6] - 1., PTM[5], s);
3132                 /* Mixed density at Alt */
3133                 final T dm01 = densu(alt, b01, tinf, tlb, xmm, 0., PTM[5], s);
3134                 final double zhm01 = zhm28;
3135                 /* Net density at Alt */
3136                 diffusiveDensity = dnet(diffusiveDensity, dm01, zhm01, xmm, H_MASS);
3137                 /* Correction to specified mixing ratio at ground */
3138                 final T rl = b28.multiply(PDM[5][1] * FastMath.sqrt(PDL[1][17] * PDL[1][17])).divide(b01).log();
3139                 final double hc01 = PDM[5][5] * PDL[1][11];
3140                 final double zc01 = PDM[5][4] * PDL[1][10];
3141                 diffusiveDensity = diffusiveDensity.multiply(ccor(alt, rl, hc01, zc01));
3142                 /* Chemistry correction */
3143                 final double hcc01 = PDM[5][7] * PDL[1][19];
3144                 final double zcc01 = PDM[5][6] * PDL[1][18];
3145                 final double rc01 = PDM[5][3] * PDL[1][20];
3146                 /* Net density corrected at Alt */
3147                 setDensity(HYDROGEN, diffusiveDensity.multiply(ccor(alt, zero.newInstance(rc01), hcc01, zcc01)));
3148             }
3149 
3150             /**** N density ****/
3151             /* Density variation factor at Zlb */
3152             final T g14 = globe7(PD[7]).multiply(sw[21]);
3153             /* Diffusive density at Zlb */
3154             final T db14 = g14.exp().multiply(PDM[6][0] * PD[7][0]);
3155             /* Diffusive density at Alt */
3156             diffusiveDensity = densu(alt, db14, tinf, tlb, N_MASS, alpha[7], PTM[5], s);
3157             setDensity(ATOMIC_NITROGEN, diffusiveDensity);
3158             if (sw[15] != 0 && alt.getReal() <= altl[7]) {
3159                 /* Turbopause */
3160                 final double zh14 = PDM[6][2];
3161                 /* Mixed density at Zlb */
3162                 final T b14 = densu(zero.newInstance(zh14), db14, tinf, tlb, N_MASS - xmm, alpha[7] - 1., PTM[5], s);
3163                 /* Mixed density at Alt */
3164                 final T dm14 = densu(alt, b14, tinf, tlb, xmm, 0., PTM[5], s);
3165                 final double zhm14 = zhm28;
3166                 /* Net density at Alt */
3167                 diffusiveDensity = dnet(diffusiveDensity, dm14, zhm14, xmm, N_MASS);
3168                 /* Correction to specified mixing ratio at ground */
3169                 final T rl = b28.multiply(PDM[6][1] * PDL[0][2]).divide(b14).log();
3170                 final double hc14 = PDM[6][5] * PDL[0][1];
3171                 final double zc14 = PDM[6][4] * PDL[0][0];
3172                 diffusiveDensity = diffusiveDensity.multiply(ccor(alt, rl, hc14, zc14));
3173                 /* Chemistry correction */
3174                 final double hcc14 = PDM[6][7] * PDL[0][4];
3175                 final double zcc14 = PDM[6][6] * PDL[0][3];
3176                 final double rc14 = PDM[6][3] * PDL[0][5];
3177                 /* Net density corrected at Alt */
3178                 setDensity(ATOMIC_NITROGEN, diffusiveDensity.multiply(ccor(alt, zero.newInstance(rc14), hcc14, zcc14)));
3179             }
3180 
3181             /**** Anomalous O density ****/
3182             final T g16h = globe7(PD[8]).multiply(sw[21]);
3183             final T db16h = g16h.exp().multiply(PDM[7][0] * PD[8][0]);
3184             final double tho   = PDM[7][9] * PDL[0][6];
3185             diffusiveDensity = densu(alt, db16h, zero.newInstance(tho), zero.newInstance(tho), O_MASS, alpha[8], PTM[5], s);
3186             final double zsht = PDM[7][5];
3187             final double zmho = PDM[7][4];
3188             final T zsho = scalh(zmho, O_MASS, tho);
3189             diffusiveDensity = diffusiveDensity.multiply(alt.negate().add(zmho).divide(zsht).exp().subtract(1).multiply(-zsht).divide(zsho).exp());
3190             setDensity(ANOMALOUS_OXYGEN, diffusiveDensity);
3191 
3192             // Convert densities from cm-3 to m-3
3193             for (int i = 0; i < 9; i++) {
3194                 setDensity(i, getDensity(i).multiply(1.0e+06));
3195             }
3196 
3197             /**** Total mass density ****/
3198             final T tmd =     getDensity(HELIUM)            .multiply(HE_MASS).
3199                           add(getDensity(ATOMIC_OXYGEN)     .multiply( O_MASS)).
3200                           add(getDensity(MOLECULAR_NITROGEN).multiply(N2_MASS)).
3201                           add(getDensity(MOLECULAR_OXYGEN)  .multiply(O2_MASS)).
3202                           add(getDensity(ARGON)             .multiply(AR_MASS)).
3203                           add(getDensity(HYDROGEN)          .multiply( H_MASS)).
3204                           add(getDensity(ATOMIC_NITROGEN)   .multiply( N_MASS)).
3205                           multiply(AMU);
3206             setDensity(TOTAL_MASS, tmd);
3207 
3208         }
3209 
3210         /** Calculate temperatures and densities not including anomalous oxygen.
3211          *  <p>NOTES ON INPUT VARIABLES:<br>
3212          *  Seconds, Local Time, and Longitude are used independently in the
3213          *  model and are not of equal importance for every situation.<br>
3214          *  For the most physically realistic calculation these three
3215          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
3216          *  The Equation of Time departures from the above formula
3217          *  for apparent local time can be included if available but
3218          *  are of minor importance.<br><br>
3219          *
3220          *  f107 and f107A values used to generate the model correspond
3221          *  to the 10.7 cm radio flux at the actual distance of the Earth
3222          *  from the Sun rather than the radio flux at 1 AU. The following
3223          *  site provides both classes of values:<br>
3224          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br><br>
3225          *
3226          *  f107, f107A, and ap effects are neither large nor well established below 80 km
3227          *  and these parameters should be set to 150., 150., and 4. respectively.
3228          *  </p>
3229          *  @param alt altitude (km)
3230          */
3231         void gtd7(final T alt) {
3232 
3233             // Calculates for thermosphere/mesosphere (above ZN2[0])
3234             final T altt = (alt.getReal() > ZN2[0]) ? alt : zero.newInstance(ZN2[0]);
3235             gts7(altt);
3236             if (alt.getReal() >= ZN2[0]) {
3237                 return;
3238             }
3239 
3240             // Calculates for lower mesosphere/upper stratosphere (between ZN2[0] and ZN3[0]):
3241             // Temperature at nodes and gradients at end nodes
3242             // Inverse temperature a linear function of spherical harmonics
3243             final double r = PMA[2][0] * PAVGM[2];
3244             meso_tgn2[0] = meso_tgn1[1];
3245             meso_tn2[0]  = meso_tn1[4];
3246             meso_tn2[1]  = glob7s(PMA[0]).multiply(sw[20]         ).negate().add(1).reciprocal().multiply(PMA[0][0] * PAVGM[0]);
3247             meso_tn2[2]  = glob7s(PMA[1]).multiply(sw[20]         ).negate().add(1).reciprocal().multiply(PMA[1][0] * PAVGM[1]);
3248             meso_tn2[3]  = glob7s(PMA[2]).multiply(sw[20] * sw[22]).negate().add(1).reciprocal().multiply(PMA[2][0] * PAVGM[2]);
3249             meso_tgn2[1] = glob7s(PMA[9]).multiply(sw[20] * sw[22]).add(1).multiply(PMA[9][0] * PAVGM[8]).
3250                            multiply(meso_tn2[3]).multiply(meso_tn2[3]).divide(r * r);
3251             meso_tn3[0]  = meso_tn2[3];
3252 
3253             // Calculates for lower stratosphere and troposphere (below ZN3[0])
3254             // Temperature at nodes and gradients at end nodes
3255             // Inverse temperature a linear function of spherical harmonics
3256             if (alt.getReal() <= ZN3[0]) {
3257                 final double q = PMA[6][0] * PAVGM[6];
3258                 meso_tgn3[0] = meso_tgn2[1];
3259                 meso_tn3[1]  = glob7s(PMA[3]).multiply(sw[22]).negate().add(1).reciprocal().multiply(PMA[3][0] * PAVGM[3]);
3260                 meso_tn3[2]  = glob7s(PMA[4]).multiply(sw[22]).negate().add(1).reciprocal().multiply(PMA[4][0] * PAVGM[4]);
3261                 meso_tn3[3]  = glob7s(PMA[5]).multiply(sw[22]).negate().add(1).reciprocal().multiply(PMA[5][0] * PAVGM[5]);
3262                 meso_tn3[4]  = glob7s(PMA[6]).multiply(sw[22]).negate().add(1).reciprocal().multiply(PMA[6][0] * PAVGM[6]);
3263                 meso_tgn3[1] = glob7s(PMA[7]).multiply(sw[22])         .add(1).multiply(PMA[7][0] * PAVGM[7]).
3264                                multiply(meso_tn3[4]).multiply(meso_tn3[4]).divide(q * q);
3265 
3266             }
3267 
3268             // Linear transition to full mixing below ZN2[0]
3269             final T dmc = (alt.getReal() > ZMIX) ?
3270                            alt.subtract(ZN2[0]).divide(ZN2[0] - ZMIX).add(1) :
3271                            zero;
3272             final T dz28 = getDensity(MOLECULAR_NITROGEN);
3273 
3274             // N2 density
3275             final T dm28m = dm28.multiply(1.0e+06);
3276             T dmr = dz28.divide(dm28m).subtract(1);
3277             T dst = densm(alt, dm28m, PDM[2][4]).multiply(dmr.multiply(dmc).add(1));
3278             setDensity(MOLECULAR_NITROGEN, dst);
3279 
3280             // HE density
3281             dmr = getDensity(HELIUM).divide(dz28.multiply(PDM[0][1])).subtract(1);
3282             dst = getDensity(MOLECULAR_NITROGEN).multiply(PDM[0][1]).multiply(dmr.multiply(dmc).add(1));
3283             setDensity(HELIUM, dst);
3284 
3285             // O density
3286             setDensity(ATOMIC_OXYGEN, zero);
3287             setDensity(ANOMALOUS_OXYGEN, zero);
3288 
3289             // O2 density
3290             dmr = getDensity(MOLECULAR_OXYGEN).divide(dz28.multiply(PDM[3][1])).subtract(1);
3291             dst = getDensity(MOLECULAR_NITROGEN).multiply(PDM[3][1]).multiply(dmr.multiply(dmc).add(1));
3292             setDensity(MOLECULAR_OXYGEN, dst);
3293 
3294             // AR density
3295             dmr = getDensity(ARGON).divide(dz28.multiply(PDM[4][1])).subtract(1);
3296             dst = getDensity(MOLECULAR_NITROGEN).multiply(PDM[4][1]).multiply(dmr.multiply(dmc).add(1));
3297             setDensity(ARGON, dst);
3298 
3299             // H density
3300             setDensity(HYDROGEN, zero);
3301 
3302             // N density
3303             setDensity(ATOMIC_NITROGEN, zero);
3304 
3305             // Total mass density
3306             final T tmd =       getDensity(HELIUM)            .multiply(HE_MASS).
3307                             add(getDensity(ATOMIC_OXYGEN)     .multiply( O_MASS)).
3308                             add(getDensity(MOLECULAR_NITROGEN).multiply(N2_MASS)).
3309                             add(getDensity(MOLECULAR_OXYGEN)  .multiply(O2_MASS)).
3310                             add(getDensity(ARGON)             .multiply(AR_MASS)).
3311                             add(getDensity(HYDROGEN)          .multiply( H_MASS)).
3312                             add(getDensity(ATOMIC_NITROGEN)   .multiply( N_MASS)).
3313                             multiply(AMU);
3314             setDensity(TOTAL_MASS, tmd);
3315 
3316             // Temperature at altitude
3317             setTemperature(ALTITUDE, densm(alt, field.getOne(), 0));
3318 
3319         }
3320 
3321         /** Calculate temperatures and densities including anomalous oxygen.
3322          *  <p></p>
3323          *  <p>NOTES ON INPUT VARIABLES:<br>
3324          *  Seconds, Local Time, and Longitude are used independently in the
3325          *  model and are not of equal importance for every situation.<br>
3326          *  For the most physically realistic calculation these three
3327          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
3328          *  The Equation of Time departures from the above formula
3329          *  for apparent local time can be included if available but
3330          *  are of minor importance.<br>
3331          *  <br>
3332          *  f107 and f107A values used to generate the model correspond
3333          *  to the 10.7 cm radio flux at the actual distance of the Earth
3334          *  from the Sun rather than the radio flux at 1 AU. The following
3335          *  site provides both classes of values:<br>
3336          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br>
3337          *  <br>
3338          *  f107, f107A, and ap effects are neither large nor well established below 80 km
3339          *  and these parameters should be set to 150., 150., and 4. respectively.
3340          *  </p>
3341          *  @param alt altitude (km)
3342          */
3343         void gtd7d(final T alt) {
3344 
3345             // Compute densities and temperatures
3346             gtd7(alt);
3347 
3348             // Update the total mass density with anomalous oxygen contribution
3349             final T dTot = getDensity(TOTAL_MASS).add(getDensity(ANOMALOUS_OXYGEN).multiply( AMU * O_MASS));
3350             setDensity(TOTAL_MASS, dTot);
3351 
3352         }
3353 
3354         /** Set one density.
3355          * @param index one of the nine elements :
3356          * <ul>
3357          * <li>{@link #HELIUM}</li>
3358          * <li>{@link #ATOMIC_OXYGEN}</li>
3359          * <li>{@link #MOLECULAR_NITROGEN}</li>
3360          * <li>{@link #MOLECULAR_OXYGEN}</li>
3361          * <li>{@link #ARGON}</li>
3362          * <li>{@link #TOTAL_MASS}</li>
3363          * <li>{@link #HYDROGEN}</li>
3364          * <li>{@link #ATOMIC_NITROGEN}</li>
3365          * <li>{@link #ATOMIC_NITROGEN}</li>
3366          * </ul>
3367          * @param d the value of density to set
3368          */
3369         void setDensity(final int index, final T d) {
3370             densities[index] = d;
3371         }
3372 
3373         /** Set one temperature.
3374          * @param index one of the two elements :
3375          * <ul>
3376          * <li>{@link #EXOSPHERIC}</li>
3377          * <li>{@link #ALTITUDE}</li>
3378          * </ul>
3379          * @param t the value of temperature to set
3380          */
3381         void setTemperature(final int index, final T t) {
3382             temperatures[index] = t;
3383         }
3384 
3385         /** Get one of the stored densities.
3386          * @param index one of the nine elements :
3387          * <ul>
3388          * <li>{@link #HELIUM}</li>
3389          * <li>{@link #ATOMIC_OXYGEN}</li>
3390          * <li>{@link #MOLECULAR_NITROGEN}</li>
3391          * <li>{@link #MOLECULAR_OXYGEN}</li>
3392          * <li>{@link #ARGON}</li>
3393          * <li>{@link #TOTAL_MASS}</li>
3394          * <li>{@link #HYDROGEN}</li>
3395          * <li>{@link #ATOMIC_NITROGEN}</li>
3396          * <li>{@link #ATOMIC_NITROGEN}</li>
3397          * </ul>
3398          * @return the requested density
3399          */
3400         public T getDensity(final int index) {
3401             return densities[index];
3402         }
3403 
3404         /** Calculate G(L) function with upper thermosphere parameters.
3405          *  @param p array of parameters
3406          *  @return G(L) value
3407          */
3408         private T globe7(final double[] p) {
3409 
3410             final T[] t = MathArrays.buildArray(field, 14);
3411             final double cd32 = FastMath.cos(DAY_TO_RAD * (doy - p[31]));
3412             final double cd18 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[17]));
3413             final double cd14 = FastMath.cos(DAY_TO_RAD * (doy - p[13]));
3414             final double cd39 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[38]));
3415 
3416             // F10.7 effect
3417             final double df  = f107  - f107a;
3418             final double dfa = f107a - FLUX_REF;
3419             t[0] = zero.newInstance(p[19] * df * (1.0 + p[59] * dfa) +
3420                                     p[20] * df * df +
3421                                     p[21] * dfa +
3422                                     p[29] * dfa * dfa);
3423 
3424             final double f1 = 1.0 + (p[47] * dfa + p[19] * df + p[20] * df * df) * swc[1];
3425             final double f2 = 1.0 + (p[49] * dfa + p[19] * df + p[20] * df * df) * swc[1];
3426 
3427             // Time independent
3428             t[1] =     plg[0][2].multiply(p[ 1]).
3429                    add(plg[0][4].multiply(p[ 2])).
3430                    add(plg[0][6].multiply(p[22])).
3431                    add(plg[0][2].multiply(p[14] * dfa * swc[1])).
3432                    add(plg[0][1].multiply(p[26]));
3433 
3434             // Symmetrical annual
3435             t[2] = zero.newInstance(p[18] * cd32);
3436 
3437             // Symmetrical semiannual
3438             t[3] = plg[0][2].multiply(p[16]).add(p[15]).multiply(cd18);
3439 
3440             // Asymmetrical annual
3441             t[4] = plg[0][1].multiply(p[9]).add(plg[0][3].multiply(p[10])).multiply(f1 * cd14);
3442 
3443             // Asymmetrical semiannual
3444             t[5] = plg[0][1].multiply(p[37] * cd39);
3445 
3446             // Diurnal
3447             if (sw[7] != 0) {
3448                 final T t71 = plg[1][2].multiply(p[11] * cd14 * swc[5]);
3449                 final T t72 = plg[1][2].multiply(p[12] * cd14 * swc[5]);
3450                 t[6] =      plg[1][1].multiply(p[3]).add(plg[1][3].multiply(p[4])).add(plg[1][5].multiply(p[27])).add(t71).multiply(ctloc).
3451                         add(plg[1][1].multiply(p[6]).add(plg[1][3].multiply(p[7])).add(plg[1][5].multiply(p[28])).add(t72).multiply(stloc)).
3452                         multiply(f2);
3453             }
3454 
3455             // Semidiurnal
3456             if (sw[8] != 0) {
3457                 final T t81 = plg[2][3].multiply(p[23]).add(plg[2][5].multiply(p[35])).multiply(cd14 * swc[5]);
3458                 final T t82 = plg[2][3].multiply(p[33]).add(plg[2][5].multiply(p[36])).multiply(cd14 * swc[5]);
3459                 t[7] =     plg[2][2].multiply(p[5]).add(plg[2][4].multiply(p[41])).add(t81).multiply(c2tloc).
3460                        add(plg[2][2].multiply(p[8]).add(plg[2][4].multiply(p[42])).add(t82).multiply(s2tloc)).
3461                        multiply(f2);
3462             }
3463 
3464             // Terdiurnal
3465             if (sw[14] != 0) {
3466                 t[13] =     plg[3][3].multiply(p[39]).add(plg[3][4].multiply(p[93]).add(plg[3][6].multiply(p[46])).multiply(cd14 * swc[5])).multiply(s3tloc).
3467                         add(plg[3][3].multiply(p[40]).add(plg[3][4].multiply(p[94]).add(plg[3][6].multiply(p[48])).multiply(cd14 * swc[5])).multiply(c3tloc)).
3468                         multiply(f2);
3469             }
3470 
3471             // magnetic activity based on daily ap
3472             if (sw[9] == -1) {
3473                 if (p[51] != 0) {
3474                     final T exp1 = lat.abs().negate().add(LAT_REF).multiply(p[138]).add(1).
3475                                     reciprocal().multiply(-10800.0 * FastMath.abs(p[51])).
3476                                     exp();
3477                     final double p24 = FastMath.max(p[24], 1.0e-4);
3478                     apt = sg0(min(0.99999, exp1), p24, p[25]);
3479                     t[8] =      plg[0][2].multiply(p[96]).add(plg[0][4].multiply(p[54])).add(p[50]).
3480                            add((plg[0][1].multiply(p[125]).add(plg[0][3].multiply(p[126])).add(plg[0][5].multiply(p[127]))).multiply(cd14 * swc[5])).
3481                            add((plg[1][1].multiply(p[128]).add(plg[1][3].multiply(p[129])).add(plg[1][5].multiply(p[130]))).multiply(swc[7]).multiply(hl.subtract(p[131]).multiply(HOUR_TO_RAD).cos())).
3482                            multiply(apt);
3483                 }
3484             } else {
3485                 final double apd = ap[0] - 4.0;
3486                 final double p44 = (p[43] < 0.) ? 1.0E-5 : p[43];
3487                 final double p45 = p[44];
3488                 apdf = apd + (p45 - 1.0) * (apd + (FastMath.exp(-p44 * apd) - 1.0) / p44);
3489                 if (sw[9] != 0) {
3490                     t[8] =      plg[0][2].multiply(p[45]).add(plg[0][4].multiply(p[34])).add(p[32]).
3491                            add((plg[0][1].multiply(p[100]).add(plg[0][3].multiply(p[101])).add(plg[0][5].multiply(p[102]))).multiply(cd14 * swc[5])).
3492                            add((plg[1][1].multiply(p[121]).add(plg[1][3].multiply(p[122])).add(plg[1][5].multiply(p[123]))).multiply(swc[7]).multiply(hl.subtract(p[124]).multiply(HOUR_TO_RAD).cos())).
3493                            multiply(apdf);
3494                 }
3495             }
3496 
3497             if (sw[10] != 0) {
3498                 final T lonr = lon.multiply(DEG_TO_RAD);
3499                 final FieldSinCos<T> scLonr = FastMath.sinCos(lonr);
3500                 // Longitudinal
3501                 if (sw[11] != 0) {
3502                     t[10] =         plg[1][2].multiply(p[ 64]) .add(plg[1][4].multiply(p[ 65])).add(plg[1][6].multiply(p[ 66])).
3503                                 add(plg[1][1].multiply(p[103])).add(plg[1][3].multiply(p[104])).add(plg[1][5].multiply(p[105])).
3504                                 add((plg[1][1].multiply(p[109])).add(plg[1][3].multiply(p[110])).add(plg[1][5].multiply(p[111])).multiply(swc[5] * cd14)).
3505                                 multiply(scLonr.cos()).
3506                             add(    plg[1][2].multiply(p[ 90]) .add(plg[1][4].multiply(p[ 91])).add(plg[1][6].multiply(p[ 92])).
3507                                 add(plg[1][1].multiply(p[106])).add(plg[1][3].multiply(p[107])).add(plg[1][5].multiply(p[108])).
3508                                 add((plg[1][1].multiply(p[112])).add(plg[1][3].multiply(p[113])).add(plg[1][5].multiply(p[114])).multiply(swc[5] * cd14)).
3509                                 multiply(scLonr.sin())).
3510                             multiply(1.0 + p[80] * dfa * swc[1]);
3511                 }
3512 
3513                 // ut and mixed ut, longitude
3514                 if (sw[12] != 0) {
3515                     t[11] =          plg[0][1].multiply(p[95]).add(1).multiply(1.0 + p[81] * dfa * swc[1]).
3516                             multiply(plg[0][1].multiply(p[119] * swc[5] * cd14).add(1)).
3517                             multiply(plg[0][1].multiply(p[68]).add(plg[0][3].multiply(p[69])).add(plg[0][5].multiply(p[70]))).
3518                             multiply(sec.subtract(p[71]).multiply(SEC_TO_RAD).cos());
3519                     t[11] = t[11].
3520                             add(plg[2][3].multiply(p[76]).add(plg[2][5].multiply(p[77])).add(plg[2][7].multiply(p[78])).
3521                                 multiply(swc[11] * (1.0 + p[137] * dfa * swc[1])).
3522                                 multiply(sec.subtract(p[79]).multiply(SEC_TO_RAD).add(lonr.multiply(2)).cos()));
3523                 }
3524 
3525                 /* ut, longitude magnetic activity */
3526                 if (sw[13] != 0) {
3527                     if (sw[9] == -1) {
3528                         if (p[51] != 0.) {
3529                             t[12] = apt.multiply(swc[11]).multiply(plg[0][1].multiply(p[132]).add(1)).
3530                                     multiply(plg[1][2].multiply(p[52]).add(plg[1][4].multiply(p[98])).add(plg[1][6].multiply(p[67]))).
3531                                     multiply(lon.subtract(p[97]).multiply(DEG_TO_RAD).cos()).
3532                                     add(apt.multiply(swc[11] * swc[5] * cd14).
3533                                         multiply(plg[1][1].multiply(p[133]).add(plg[1][3].multiply(p[134])).add(plg[1][5].multiply(p[135]))).
3534                                         multiply(lon.subtract(p[136]).multiply(DEG_TO_RAD).cos())).
3535                                     add(apt.multiply(swc[12]).
3536                                         multiply(plg[0][1].multiply(p[55]).add(plg[0][3].multiply(p[56])).add(plg[0][5].multiply(p[57]))).
3537                                         multiply(sec.subtract(p[58]).multiply(SEC_TO_RAD).cos()));
3538                         }
3539                     } else {
3540                         t[12] = plg[0][1].multiply(p[120]).add(1).multiply(apdf * swc[11]).
3541                                 multiply(plg[1][2].multiply(p[60]).add(plg[1][4].multiply(p[61])).add(plg[1][6].multiply(p[62]))).
3542                                 multiply(lon.subtract(p[63]).multiply(DEG_TO_RAD).cos()).
3543                                 add(plg[1][1].multiply(p[115]).add(plg[1][3].multiply(p[116])).add(plg[1][5].multiply(p[117])).
3544                                     multiply(apdf * swc[11] * swc[5] * cd14).
3545                                     multiply(lon.subtract(p[118]).multiply(DEG_TO_RAD).cos())).
3546                                 add(plg[0][1].multiply(p[83]).add(plg[0][3].multiply(p[84])).add(plg[0][5].multiply(p[85])).
3547                                     multiply(apdf * swc[12]).
3548                                     multiply(sec.subtract(p[75]).multiply(SEC_TO_RAD).cos()));
3549                     }
3550                 }
3551             }
3552 
3553             // Sum all effects (params not used: 82, 89, 99, 139-149)
3554             T tinf = zero.newInstance(p[30]);
3555             for (int i = 0; i < 14; i++) {
3556                 tinf = tinf.add(t[i].multiply(FastMath.abs(sw[i + 1])));
3557             }
3558 
3559             // Return G(L)
3560             return tinf;
3561 
3562         }
3563 
3564         /** Calculate G(L) function with lower atmosphere parameters.
3565          *  @param p array of parameters
3566          *  @return G(L) value
3567          */
3568         private T glob7s(final double[] p) {
3569 
3570             final T[] t = MathArrays.buildArray(field, 14);
3571             final double cd32 = FastMath.cos(DAY_TO_RAD * (doy - p[31]));
3572             final double cd18 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[17]));
3573             final double cd14 = FastMath.cos(DAY_TO_RAD * (doy - p[13]));
3574             final double cd39 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[38]));
3575 
3576             // F10.7 effect
3577             t[0] = zero.newInstance(p[21] * (f107a - FLUX_REF));
3578 
3579             // Time independent
3580             t[1] =     plg[0][2].multiply(p[1]).
3581                    add(plg[0][4].multiply(p[2])).
3582                    add(plg[0][6].multiply(p[22])).
3583                    add(plg[0][1].multiply(p[26])).
3584                    add(plg[0][3].multiply(p[14])).
3585                    add(plg[0][5].multiply(p[59]));
3586 
3587             // Symmetrical annual
3588             t[2] = plg[0][2].multiply(p[47]).add(plg[0][4].multiply(p[29])).add(p[18]).multiply(cd32);
3589 
3590             // Symmetrical semiannual
3591             t[3] = plg[0][2].multiply(p[16]).add(plg[0][4].multiply(p[30])).add(p[15]).multiply(cd18);
3592 
3593             // Asymmetrical annual
3594             t[4] = plg[0][1].multiply(p[9]).add(plg[0][3].multiply(p[10])).add(plg[0][5].multiply(p[20])).multiply(cd14);
3595 
3596             // Asymmetrical semiannual
3597             t[5] = plg[0][1].multiply(p[37]).multiply(cd39);
3598 
3599             // Diurnal
3600             if (sw[7] != 0) {
3601                 final T t71 = plg[1][2].multiply(p[11]).multiply(cd14 * swc[5]);
3602                 final T t72 = plg[1][2].multiply(p[12]).multiply(cd14 * swc[5]);
3603                 t[6] =     plg[1][1].multiply(p[3]).add(plg[1][3].multiply(p[4])).add(t71).multiply(ctloc).
3604                        add(plg[1][1].multiply(p[6]).add(plg[1][3].multiply(p[7])).add(t72).multiply(stloc));
3605             }
3606 
3607             // Semidiurnal
3608             if (sw[8] != 0) {
3609                 final T t81 = plg[2][3].multiply(p[23]).add(plg[2][5].multiply(p[35])).multiply(cd14 * swc[5]);
3610                 final T t82 = plg[2][3].multiply(p[33]).add(plg[2][5].multiply(p[36])).multiply(cd14 * swc[5]);
3611                 t[7] =     plg[2][2].multiply(p[5]).add(plg[2][4].multiply(p[41])).add(t81).multiply(c2tloc).
3612                        add(plg[2][2].multiply(p[8]).add(plg[2][4].multiply(p[42])).add(t82).multiply(s2tloc));
3613             }
3614 
3615             // Terdiurnal
3616             if (sw[14] != 0) {
3617                 t[13] = plg[3][3].multiply(p[39]).multiply(s3tloc).add(plg[3][3].multiply(p[40]).multiply(c3tloc));
3618             }
3619 
3620             // Magnetic activity
3621             if (sw[9] == 1) {
3622                 t[8] = plg[0][2].multiply(p[45] * swc[2]).add(p[32]).multiply(apdf);
3623             } else if (sw[9] == -1) {
3624                 t[8] = plg[0][2].multiply(p[96] * swc[2]).add(p[50]).multiply(apt);
3625             }
3626 
3627             // Longitudinal
3628             if (!(sw[10] == 0 || sw[11] == 0)) {
3629                 final T lonr = lon.multiply(DEG_TO_RAD);
3630                 final FieldSinCos<T> scLonr = FastMath.sinCos(lonr);
3631                 t[10] = plg[0][1].multiply(p[80] * swc[5] * FastMath.cos(DAY_TO_RAD * (doy - p[81])) +
3632                                            p[85] * swc[6] * FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[86]))).
3633                        add(1.0 +
3634                            p[83] * swc[3] * FastMath.cos(DAY_TO_RAD * (doy - p[84])) +
3635                            p[87] * swc[4] * FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[88]))).
3636                        multiply(    plg[1][2].multiply(p[64]).
3637                                 add(plg[1][4].multiply(p[65])).
3638                                 add(plg[1][6].multiply(p[66])).
3639                                 add(plg[1][1].multiply(p[74])).
3640                                 add(plg[1][3].multiply(p[75])).
3641                                 add(plg[1][5].multiply(p[76])).multiply(scLonr.cos()).
3642                           add(      plg[1][2].multiply(p[90]).
3643                                 add(plg[1][4].multiply(p[91])).
3644                                 add(plg[1][6].multiply(p[92])).
3645                                 add(plg[1][1].multiply(p[77])).
3646                                 add(plg[1][3].multiply(p[78])).
3647                                 add(plg[1][5].multiply(p[79])).multiply(scLonr.sin())));
3648             }
3649 
3650             // Sum all effects
3651             T gl = zero;
3652             for (int i = 0; i < 14; i++) {
3653                 gl = gl.add(t[i].multiply(FastMath.abs(sw[i + 1])));
3654             }
3655 
3656             // Return G(L)
3657             return gl;
3658         }
3659 
3660         /** Implements sg0 function (Eq. A24a).
3661          * @param ex ex
3662          * @param p24 abs(p[24])
3663          * @param p25 p[25]
3664          * @return sg0
3665          */
3666         private T sg0(final T ex, final double p24, final double p25) {
3667             final double g01 = g0(ap[1], p24, p25);
3668             final double g02 = g0(ap[2], p24, p25);
3669             final double g03 = g0(ap[3], p24, p25);
3670             final double g04 = g0(ap[4], p24, p25);
3671             final double g05 = g0(ap[5], p24, p25);
3672             final double g06 = g0(ap[6], p24, p25);
3673             final T ex2      = ex.square();
3674             final T ex3      = ex.multiply(ex2);
3675             final T ex4      = ex2.square();
3676             final T ex8      = ex4.square();
3677             final T ex12     = ex4.multiply(ex8);
3678             final T g234     = ex.multiply(g02).add(ex2.multiply(g03)).add(ex3.multiply(g04));
3679             final T g56      = ex4.multiply(g05).add(ex12.multiply(g06));
3680             final T ex19     = ex3.multiply(ex4).multiply(ex12);
3681             final T omex     = ex.negate().add(1);
3682             final T sumex    = ex19.negate().add(1).divide(omex).multiply(ex.sqrt()).add(1);
3683             return ex8.negate().add(1).multiply(g56).divide(omex).add(g234).add(g01).divide(sumex);
3684         }
3685 
3686         /** Implements go function (Eq. A24d).
3687          * @param apI 3 hrs ap
3688          * @param p24 abs(p[24])
3689          * @param p25 p[25]
3690          * @return go
3691          */
3692         private double g0(final double apI, final double p24, final double p25) {
3693             final double am4 = apI - 4.0;
3694             return am4 + (p25 - 1.0) * (am4 + (FastMath.exp(-p24 * am4) - 1.0) / p24);
3695         }
3696 
3697         /** Calculates chemistry/dissociation correction for MSIS models.
3698          * @param alt altitude
3699          * @param r target ratio
3700          * @param h1 transition scale length
3701          * @param zh altitude of 1/2 R
3702          * @return correction
3703          */
3704         private T ccor(final T alt, final T r, final double h1, final double zh) {
3705             final T e = alt.subtract(zh).divide(h1);
3706             if (e.getReal() > 70.) {
3707                 return field.getOne();
3708             } else if (e.getReal() < -70.) {
3709                 return r.exp();
3710             } else {
3711                 return r.divide(e.exp().add(1)).exp();
3712             }
3713         }
3714 
3715 
3716         /** Calculates O & O2 chemistry/dissociation correction for MSIS models.
3717          * @param alt altitude
3718          * @param r target ratio
3719          * @param h1 transition scale length
3720          * @param zh altitude of 1/2 R
3721          * @param h2 transition scale length
3722          * @return correction
3723          */
3724         private T ccor2(final T alt, final double r, final double h1, final double zh, final double h2) {
3725             final T e1 = alt.subtract(zh).divide(h1);
3726             final T e2 = alt.subtract(zh).divide(h2);
3727             if (e1.getReal() > 70. || e2.getReal() > 70.) {
3728                 return field.getOne();
3729             } else if (e1.getReal() < -70. && e2.getReal() < -70.) {
3730                 return zero.newInstance(FastMath.exp(r));
3731             } else {
3732                 final T ex1 = e1.exp();
3733                 final T ex2 = e2.exp();
3734                 return ex1.add(ex2).multiply(0.5).add(1).reciprocal().multiply(r).exp();
3735             }
3736         }
3737 
3738         /** Calculates scale height.
3739          * @param alt altitude
3740          * @param xm species molecular weight
3741          * @param temp temperature
3742          * @return scale height (km)
3743          */
3744         private T scalh(final double alt, final double xm, final double temp) {
3745             // Gravity at altitude
3746             final T denom = rlat.reciprocal().multiply(alt).add(1);
3747             final T galt = glat.divide(denom.square());
3748             return galt.reciprocal().multiply(R_GAS * temp / xm);
3749         }
3750 
3751         /** Calculates turbopause correction for MSIS models.
3752          * @param dd diffusive density
3753          * @param dm full mixed density
3754          * @param zhm transition scale length
3755          * @param xmm full mixed molecular weight
3756          * @param xm species molecular weight
3757          * @return combined density
3758          */
3759         private T dnet(final T dd, final T dm, final double zhm, final double xmm, final double xm) {
3760             if (!(dm.getReal() > 0 && dd.getReal() > 0)) {
3761                 T ddd = dd;
3762                 if (dd.getReal() == 0 && dm.getReal() == 0) {
3763                     ddd = field.getOne();
3764                 }
3765                 if (dm.getReal() == 0) {
3766                     return ddd;
3767                 }
3768                 if (dd.getReal() == 0) {
3769                     return dm;
3770                 }
3771             }
3772 
3773             final double a  = zhm / (xmm - xm);
3774             final T ylog = dm.divide(dd).log().multiply(a);
3775             if (ylog.getReal() < -10.) {
3776                 return dd;
3777             } else if (ylog.getReal() > 10.) {
3778                 return dm;
3779             } else {
3780                 return ylog.exp().add(1).pow(1.0 / a).multiply(dd);
3781             }
3782         }
3783 
3784         /** Integrate cubic spline function from xa[0] to x.
3785          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
3786          * @param xa array of abscissas in ascending order
3787          * @param ya array of ordinates in ascending order by xa
3788          * @param y2a array of second derivatives in ascending order by xa
3789          * @param x abscissa end point
3790          * @return integral value
3791          */
3792         private T splini(final T[] xa, final T[] ya, final T[] y2a, final T x) {
3793             final int n = xa.length;
3794             T yi = zero;
3795             int klo = 0;
3796             int khi = 1;
3797             while (x.getReal() > xa[klo].getReal() && khi < n) {
3798                 T xx = x;
3799                 if (khi < n - 1) {
3800                     xx = (x.getReal() < xa[khi].getReal()) ? x : xa[khi];
3801                 }
3802                 final T h = xa[khi].subtract(xa[klo]);
3803                 final T a = xa[khi].subtract(xx).divide(h);
3804                 final T b = xx.subtract(xa[klo]).divide(h);
3805                 final T a2 = a.square();
3806                 final T b2 = b.square();
3807 
3808                 final T z =
3809                            a2.divide(2).subtract(a2.square().add(1).divide(4)).multiply(y2a[klo]).
3810                            add(b2.multiply(b2).divide(4).subtract(b2.divide(2)).multiply(y2a[khi]));
3811                 yi = yi.add(    a2.negate().add(1).multiply(ya[klo]).divide(2).
3812                             add(b2.multiply(ya[khi]).divide(2)).
3813                             add(z.multiply(h).multiply(h).divide(6)).
3814                             multiply(h));
3815                 klo++;
3816                 khi++;
3817             }
3818             return yi;
3819         }
3820 
3821         /** Calculate cubic spline interpolated value.
3822          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
3823          * @param xa array of abscissas in ascending order
3824          * @param ya array of ordinates in ascending order by xa
3825          * @param y2a array of second derivatives in ascending order by xa
3826          * @param x abscissa for interpolation
3827          * @return interpolated value
3828          */
3829         private T splint(final T[] xa, final T[] ya, final T[] y2a, final T x) {
3830             final int n = xa.length;
3831             int klo = 0;
3832             int khi = n - 1;
3833             while (khi - klo > 1) {
3834                 final int k = (khi + klo) >>> 1;
3835                 if (xa[k].getReal() > x.getReal()) {
3836                     khi = k;
3837                 } else {
3838                     klo = k;
3839                 }
3840             }
3841             final T h = xa[khi].subtract(xa[klo]);
3842             final T a = xa[khi].subtract(x).divide(h);
3843             final T b = x.subtract(xa[klo]).divide(h);
3844             return a.multiply(ya[klo]).add(b.multiply(ya[khi])).
3845                    add((    a.square().multiply(a).subtract(a).multiply(y2a[klo]).
3846                         add(b.multiply(b).multiply(b).subtract(b).multiply(y2a[khi]))
3847                        ).multiply(h).multiply(h).divide(6));
3848         }
3849 
3850         /** Calculate 2nd derivatives of cubic spline interpolation function.
3851          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
3852          * @param x array of abscissas in ascending order
3853          * @param y array of ordinates in ascending order by x
3854          * @param yp1 derivative at x[0] (2nd derivatives null if > 1E30)
3855          * @param ypn derivative at x[n-1] (2nd derivatives null if > 1E30)
3856          * @return array of second derivatives
3857          */
3858         private T[] spline(final T[] x, final T[] y, final T yp1, final T ypn) {
3859             final int n = x.length;
3860             final T[] y2 = MathArrays.buildArray(field, n);
3861             final T[] u  = MathArrays.buildArray(field, n);
3862 
3863             if (yp1.getReal() < 1e+30) {
3864                 y2[0] = zero.newInstance(-0.5);
3865                 final T dx = x[1].subtract(x[0]);
3866                 final T dy = y[1].subtract(y[0]);
3867                 u[0]  = dx.reciprocal().multiply(3.0).multiply(dy.divide(dx).subtract(yp1));
3868             }
3869             for (int i = 1; i < n - 1; i++) {
3870                 final T dx0m = x[i].subtract(x[i - 1]);
3871                 final T dy0m = y[i].subtract(y[i - 1]);
3872                 final T dxpm = x[i + 1].subtract(x[i - 1]);
3873                 final T dxp0 = x[i + 1].subtract(x[i]);
3874                 final T dyp0 = y[i + 1].subtract(y[i]);
3875                 final T sig = dx0m.divide(dxpm);
3876                 final T p = sig.multiply(y2[i - 1]).add(2.0);
3877                 y2[i] = sig.subtract(1.0).divide(p);
3878                 u[i] = dyp0.divide(dxp0).subtract(dy0m.divide(dx0m)).multiply(6).divide(dxpm).subtract(sig.multiply(u[i - 1])).divide(p);
3879             }
3880 
3881             double qn = 0;
3882             T un = zero;
3883             if (ypn.getReal() < 1e+30) {
3884                 final T dx12 = x[n - 1].subtract(x[n - 2]);
3885                 final T dy12 = y[n - 1].subtract(y[n - 2]);
3886                 qn = 0.5;
3887                 un = dx12.reciprocal().multiply(3.0).multiply(ypn.subtract(dy12.divide(dx12)));
3888             }
3889 
3890             y2[n - 1] = un.subtract(u[n - 2].multiply(qn)).divide(y2[n - 2].multiply(qn).add(1.0));
3891             for (int k = n - 2; k >= 0; k--) {
3892                 y2[k] = y2[k].multiply(y2[k + 1]).add(u[k]);
3893             }
3894 
3895             return y2;
3896 
3897         }
3898 
3899         /** Calculate Temperature and Density Profiles for lower atmosphere.
3900          * @param alt altitude
3901          * @param d0 density
3902          * @param xm mixed density
3903          * @return temperature or density profile
3904          */
3905         private T densm(final T alt, final T d0, final double xm) {
3906 
3907             T densm = d0;
3908 
3909             // stratosphere/mesosphere temperature
3910             int mn = ZN2.length;
3911             T z = (alt.getReal() > ZN2[mn - 1]) ? alt : zero.newInstance(ZN2[mn - 1]);
3912 
3913             double z1 = ZN2[0];
3914             double z2 = ZN2[mn - 1];
3915             T t1 = meso_tn2[0];
3916             T t2 = meso_tn2[mn - 1];
3917             T zg  = zeta(z, z1);
3918             T zgdif = zeta(zero.newInstance(z2), z1);
3919 
3920             /* set up spline nodes */
3921             T[] xs = MathArrays.buildArray(field, mn);
3922             T[] ys = MathArrays.buildArray(field, mn);
3923             for (int k = 0; k < mn; k++) {
3924                 xs[k] = zeta(zero.newInstance(ZN2[k]), z1).divide(zgdif);
3925                 ys[k] = meso_tn2[k].reciprocal();
3926             }
3927             final T qSM = rlat.add(z2).divide(rlat.add(z1));
3928             T yd1 = meso_tgn2[0].negate().divide(t1.square()).multiply(zgdif);
3929             T yd2 = meso_tgn2[1].negate().divide(t2.square()).multiply(zgdif).multiply(qSM.square());
3930 
3931             /* calculate spline coefficients */
3932             T[] y2out = spline(xs, ys, yd1, yd2);
3933             T x = zg.divide(zgdif);
3934             T y = splint(xs, ys, y2out, x);
3935 
3936             /* temperature at altitude */
3937             T tz = y.reciprocal();
3938 
3939             if (xm != 0.0) {
3940                 /* calculate stratosphere / mesospehere density */
3941                 final T glb  = galt(zero.newInstance(z1));
3942                 final T gamm = glb.multiply(zgdif).multiply(xm / R_GAS);
3943 
3944                 /* Integrate temperature profile */
3945                 final T yi = splini(xs, ys, y2out, x);
3946                 final T expl = min(MIN_TEMP, gamm.multiply(yi));
3947 
3948                 /* Density at altitude */
3949                 densm = densm.multiply(t1.divide(tz).multiply(expl.negate().exp()));
3950             }
3951 
3952             if (alt.getReal() > ZN3[0]) {
3953                 return (xm == 0.0) ? tz : densm;
3954             }
3955 
3956             // troposhere/stratosphere temperature
3957             z = alt;
3958             mn = ZN3.length;
3959             z1 = ZN3[0];
3960             z2 = ZN3[mn - 1];
3961             t1 = meso_tn3[0];
3962             t2 = meso_tn3[mn - 1];
3963             zg = zeta(z, z1);
3964             zgdif = zeta(zero.newInstance(z2), z1);
3965 
3966             /* set up spline nodes */
3967             xs = MathArrays.buildArray(field, mn);
3968             ys = MathArrays.buildArray(field, mn);
3969             for (int k = 0; k < mn; k++) {
3970                 xs[k] = zeta(zero.newInstance(ZN3[k]), z1).divide(zgdif);
3971                 ys[k] = meso_tn3[k].reciprocal();
3972             }
3973             final T qTS = rlat.add(z2) .divide(rlat.add(z1));
3974             yd1 = meso_tgn3[0].negate().divide(t1.multiply(t1)).multiply(zgdif);
3975             yd2 = meso_tgn3[1].negate().divide(t2.multiply(t2)).multiply(zgdif).multiply(qTS).multiply(qTS);
3976 
3977             /* calculate spline coefficients */
3978             y2out = spline(xs, ys, yd1, yd2);
3979             x = zg.divide(zgdif);
3980             y = splint(xs, ys, y2out, x);
3981 
3982             /* temperature at altitude */
3983             tz = y.reciprocal();
3984 
3985             if (xm != 0.0) {
3986                 /* calculate tropospheric / stratosphere density */
3987                 final T glb = galt(zero.newInstance(z1));
3988                 final T gamm = glb.multiply(zgdif).multiply(xm / R_GAS);
3989 
3990                 /* Integrate temperature profile */
3991                 final T yi = splini(xs, ys, y2out, x);
3992                 final T expl = min(MIN_TEMP, gamm.multiply(yi));
3993 
3994                 /* Density at altitude */
3995                 densm = densm.multiply(t1.divide(tz).multiply(expl.negate().exp()));
3996             }
3997 
3998             return (xm == 0.0) ? tz : densm;
3999         }
4000 
4001         /** Calculate temperature and density profiles according to new lower thermo polynomial.
4002          * @param alt altitude
4003          * @param dlb density at lower boundary
4004          * @param tinf exospheric temperature
4005          * @param tlb temperature at lower boundary
4006          * @param xm species molecular weight
4007          * @param alpha thermal diffusion coefficient
4008          * @param zlb altitude of the lower boundary
4009          * @param s2 slope
4010          * @return temperature or density profile
4011          */
4012         private T densu(final T alt, final T dlb, final T tinf,
4013                         final T tlb, final double xm,  final double alpha,
4014                         final double zlb, final T s2) {
4015             /* joining altitudes of Bates and spline */
4016             T z = (alt.getReal() > ZN1[0]) ? alt : zero.newInstance(ZN1[0]);
4017 
4018             /* geopotential altitude difference from ZLB */
4019             final T zg2 = zeta(z, zlb);
4020 
4021             /* Bates temperature */
4022             final T tt = tinf.subtract(tinf.subtract(tlb).multiply(s2.negate().multiply(zg2).exp()));
4023             final T ta = tt;
4024             T tz = tt;
4025 
4026             final int mn = ZN1.length;
4027             final T[] xs = MathArrays.buildArray(field, mn);
4028             final T[] ys = MathArrays.buildArray(field, mn);
4029             T x = zero;
4030             T[] y2out =  MathArrays.buildArray(field, mn);
4031             T zgdif = zero;
4032             if (alt.getReal() < ZN1[0]) {
4033                 /* calculate temperature below ZA
4034                  * temperature gradient at ZA from Bates profile */
4035                 final T p = rlat.add(zlb).divide(rlat.add(ZN1[0]));
4036                 final T dta = tinf.subtract(ta).multiply(s2).multiply(p.square());
4037                 meso_tgn1[0] = dta;
4038                 meso_tn1[0] = ta;
4039                 final T tzn1mn1 = zero.newInstance(ZN1[mn - 1]);
4040                 z = (alt.getReal() > ZN1[mn - 1]) ? alt : tzn1mn1;
4041 
4042                 final T t1 = meso_tn1[0];
4043                 final T t2 = meso_tn1[mn - 1];
4044                 /* geopotental difference from z1 */
4045                 final T zg = zeta(z, ZN1[0]);
4046                 zgdif = zeta(tzn1mn1, ZN1[0]);
4047                 /* set up spline nodes */
4048                 for (int k = 0; k < mn; k++) {
4049                     xs[k] = zeta(zero.newInstance(ZN1[k]), ZN1[0]).divide(zgdif);
4050                     ys[k] =  meso_tn1[k].reciprocal();
4051                 }
4052                 /* end node derivatives */
4053                 final T q   = rlat.add(ZN1[mn - 1]).divide(rlat.add(ZN1[0]));
4054                 final T yd1 = meso_tgn1[0].negate().divide(t1.square()).multiply(zgdif);
4055                 final T yd2 = meso_tgn1[1].negate().divide(t2.square()).multiply(zgdif).multiply(q.square());
4056                 /* calculate spline coefficients */
4057                 y2out = spline(xs, ys, yd1, yd2);
4058                 x = zg.divide(zgdif);
4059                 final T y = splint(xs, ys, y2out, x);
4060                 /* temperature at altitude */
4061                 tz = y.reciprocal();
4062             }
4063 
4064             if (xm == 0) {
4065                 return tz;
4066             }
4067 
4068             /* calculate density above za */
4069             T glb   = galt(zero.newInstance(zlb));
4070             T gamma = glb.divide(s2.multiply(tinf)).multiply(xm / R_GAS);
4071             T expl = tt.getReal() <= 0 ?
4072                      zero.newInstance(MIN_TEMP) :
4073                      min(MIN_TEMP, s2.negate().multiply(gamma).multiply(zg2).exp());
4074             T densu = dlb.multiply(expl).multiply(tlb.divide(tt).pow(gamma.add(alpha + 1)));
4075 
4076             // Correction for issue 1365 - protection against "densu" being infinite
4077             if (!Double.isFinite(densu.getReal())) {
4078                 if (expl.getReal() < MIN_TEMP) {
4079                     densu = dlb.multiply(FastMath.exp((FastMath.log(tlb.divide(tt)).multiply(gamma.add(alpha + 1))).
4080                                                       subtract(s2.multiply(gamma).multiply(zg2))));
4081                 } else {
4082                     throw new OrekitException(OrekitMessages.INFINITE_NRLMSISE00_DENSITY);
4083                 }
4084             }
4085 
4086             /* calculate density below za */
4087             if (alt.getReal() < ZN1[0]) {
4088                 glb   = galt(zero.newInstance(ZN1[0]));
4089                 gamma = glb.multiply(zgdif).multiply(xm / R_GAS);
4090                 /* integrate spline temperatures */
4091                 expl = tz.getReal() <= 0 ?
4092                        zero.newInstance(MIN_TEMP) :
4093                        min(MIN_TEMP, gamma.multiply(splini(xs, ys, y2out, x)));
4094                 /* correct density at altitude */
4095                 densu = densu.multiply(meso_tn1[0].divide(tz).pow(alpha + 1).multiply(expl.negate().exp()));
4096             }
4097 
4098             /* Return density at altitude */
4099             return densu;
4100         }
4101 
4102         /** Compute min of two values, one double and one field element.
4103          * @param d double value
4104          * @param f field element
4105          * @return min value
4106          */
4107         private T min(final double d, final T f) {
4108             return (f.getReal() > d) ? zero.newInstance(d) : f;
4109         }
4110 
4111         /** Calculate gravity at altitude.
4112          * @param alt altitude (km)
4113          * @return gravity at altitude (cm/s2)
4114          */
4115         private T galt(final T alt) {
4116             final T r = alt.divide(rlat).add(1);
4117             return glat.divide(r.square());
4118         }
4119 
4120         /** Calculate zeta function.
4121          * @param zz zz value
4122          * @param zl zl value
4123          * @return value of zeta function
4124          */
4125         private T zeta(final T zz, final double zl) {
4126             return zz.subtract(zl).multiply(rlat.add(zl)).divide(rlat.add(zz));
4127         }
4128 
4129     }
4130 
4131 }