<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 06:05:00.000"
URSICode="SMK29"
StationName="Santa Maria"
GeoLatitude="-29.69"
GeoLongitude="307.81"
Source="Ionosonde"
SourceType="DPS-4D"
ScalerType="auto">
<SystemInfo UMLStationID="129">
<FrequencyStepping StartFrequency="2.0" StopFrequency="15.0">
<LinearStepping Step="0.025" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="2.5" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.17 (107) 06:05:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202610704170605001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.544" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.582" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="265.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="265.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="286.101" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="264.555" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="246.153" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.304" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="26.367" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.940" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.017" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.520" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.360" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.1 3.125 3.15 3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
265.000 265.000 267.500 270.000 270.000 272.500 274.626 276.997 279.659 282.670 286.101 290.049 294.639 300.042 306.494 314.335 324.066 336.464 352.801
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 81 0 96 93 93 93 96 93 93 90 0 0 90 87 84 84 87 87
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.5625 1.5625 -1.5625 1.5625 1.5625 -1.5625 1.5625 -1.5625 1.5625 -1.5625 1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="390">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.16667 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.33333 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 218.5 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 264.555 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21213934 0.23390245 0.2526677 0.26895854 0.28319094 0.29565945 0.30659118 0.31614733 0.32445762 0.331616 0.33769703 0.34275886 0.34684667 0.3499937 0.352225 0.3535571 0.354 0.3538872 0.35362422 0.35321164 0.35257575 0.35171902 0.35071892 0.34950462 0.34815413 0.3465988 0.34484506 0.3429001 0.34070218 0.33833194 0.335799 0.33304724 0.3300264 0.32682016 0.3233834 0.31967828 0.3157338 0.31158027 0.30708545 0.3023534 0.2973057 0.29203182 0.28632477 0.2803815 0.27398396 0.26722857 0.25997394 0.25233078 0.2441541 0.23540089 0.22610123 0.21613485 0.20538878 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2028387 0.20709677 0.21135484 0.2156129 0.21987097 0.22412904 0.2283871 0.23264515 0.23690322 0.24116129 0.24541935 0.24967742 0.2539355 0.25819355 0.26245162 0.2667097 0.27096775 0.27522582 0.27948388 0.28374192 0.288 0.29225805 0.29651612 0.3007742 0.30503225 0.30929032 0.3135484 0.31780645 0.32206452 0.3263226 0.33058065 0.33483872 0.33909678 0.34335485 0.34761292 0.35187095 0.354 0.37179998 0.40996593 0.4513449 0.49570698 0.54287106 0.5927482 0.64531773 0.7005983 0.7586963 0.8197199 0.8838358 0.9512161 1.0220188 1.0964665 1.1746931 1.256859 1.3430758 1.4334257 1.5278441 1.6262119 1.7282782 1.8336576 1.9417409 2.0518277 2.163066 2.2744887 2.385076 2.4938078 2.5997236 2.7019634 2.7997642 2.8925247 2.9797754 3.0611641 3.1364555 3.2055018 3.2682133 3.3245397 3.3745127 3.4181383 3.4554658 3.486531 3.5113895 3.5300748 3.5426242 3.5490608 3.55 3.5496528 3.5463953 3.5398395 3.530147 3.5174806 3.5020025 3.4838746 3.463256 3.4403043 3.415174 3.3880157 3.3589766 3.3281991 3.2958221 3.2619786 3.2267973 3.1904023 3.1529114 3.1144383 3.075091 3.0349727 2.9941812 2.952809 2.910945 2.8686712 2.8260667 2.7832048 2.7401552 2.6969824 2.6537478 2.6105077 2.5673153 2.52422 2.4812675 2.4385 2.3959568 2.353674 2.3116846 2.2700193 2.228706 2.1877697 2.1472337 2.1071186 2.0674434 2.0282242 1.9894767 1.9512135 1.9134464 1.8761854 1.8394392 1.8032148 1.7675185 1.732355 1.6977283 1.663641 1.6300951 1.5970917 1.5646309 1.5327121 1.5013344 1.4704957 1.4401939 1.4104258 1.3811882 1.3524773 1.3242887 1.2966181 1.2694603 1.2428104 1.2166626 1.1910115 1.1658511 1.1411753 1.1169778 1.0932523 1.0699923 1.0471911 1.0248421 1.0029385 0.98147357 0.96044034 0.939832 0.9196416 0.89986235 0.8804873 0.86150956 0.84292233 0.8247187 0.806892 0.7894354 0.7723422 0.7556058 0.7392196 0.72317713 0.7074719 0.69209754 0.6770477 0.66231626 0.64789695 0.63378376 0.6199707 0.6064518 0.59322137 0.5802735 0.5676027 0.55520326 0.54306984 0.531197 0.5195794 0.5082119 0.49708936 0.4862067 0.47555906 0.46514148 0.45494923 0.44497764 0.4352221 0.42567804 0.41634113 0.40720692 0.39827117 0.38952973 0.38097847 0.37261334 0.36443043 0.35642582 0.34859577 0.3409365 0.3334444 0.32611588 0.31894743 0.31193563 0.30507714 0.29836863 0.29180685 0.2853887 0.27911106 0.27297086 0.26696518 0.26109108 0.25534573 0.24972634 0.24423017 0.23885454 0.23359686 0.22845453 0.22342508 0.21850602 0.21369497 0.20898959 0.20438755 0.19988659 0.19548453 0.19117922 0.1869685 0.18285036 0.17882274 0.17488368 0.17103124 0.16726351 0.16357866 0.15997486 0.15645033 0.15300335 0.14963222 0.14633526 0.14311086 0.13995743 0.1368734 0.13385725 0.1309075 0.1280227 0.1252014 0.12244222 0.119743794 0.11710479 0.1145239 0.111999854 0.109531395 0.1071173 0.10475638 0.10244746 0.1001894 0.09798108 0.09582141 0.09370932 0.091643766 0.08962371 0.08764816 0.08571614 0.0838267 0.08197888 0.08017178 0.07840449 0.07667616 0.07498591 0.073332906 0.07171633 0.070135385 0.06858928 0.06707724 0.06559853 0.06415241 0.062738165 0.06135509 0.0600025 0.058679715 0.05738609 0.05612098 0.054883752 0.053673796 0.05249051 0.051333304 0.05020161

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="3.55" PeakHeight="264.555" Num="5" zHalfNm="246.153" Error="1.524">
-47.026 1.963 -1.672 0.914 -0.234
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.0205" EndDistance="6480.001" A="-5.5027394E11" B="1.69837632E8" C="-13104.63" Error="0.0016"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6516.167" A="-1.16244783E11" B="3.587802E7" C="-2768.2405" Error="0.00174"/>
<QuasiParabolic ID="2" StartDistance="6516.167" EndDistance="6552.333" A="0.0" B="-3491.2441" C="0.57581455" Error="0.0747"/>
<QuasiParabolic ID="3" StartDistance="6552.333" EndDistance="6583.0" A="7.957649E10" B="-2.4325962E7" C="1859.1067" Error="0.0747"/>
<QuasiParabolic ID="4" StartDistance="6583.0" EndDistance="6587.0" A="-4.0263254E11" B="1.22175336E8" C="-9268.138" Error="0.00289"/>
<QuasiParabolic ID="5" StartDistance="6587.0" EndDistance="6592.0" A="8.2797564E12" B="-2.51404416E9" C="190839.61" Error="0.0343"/>
<QuasiParabolic ID="6" StartDistance="6592.0" EndDistance="6604.0" A="1.10190322E13" B="-3.34513485E9" C="253877.45" Error="0.0782"/>
<QuasiParabolic ID="7" StartDistance="6604.0" EndDistance="6619.0" A="2.83701884E13" B="-8.5998766E9" C="651722.8" Error="0.0426"/>
<QuasiParabolic ID="8" StartDistance="6619.0" EndDistance="6634.555" A="-3.8857488E13" B="1.17136681E10" C="-882764.6" Error="0.0142"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="108.5" Depth="0.154"/>
<TopsideChapman PeakHeight="264.555" PeakDensity="156358.56" PeakScaleHeight="14.017" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
