<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 04:50:00.000"
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: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.20 (110) 04:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.20" 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">
FF202611004200450001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.325" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.479" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.089" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.025" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.025" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="267.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="267.500" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.175" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="290.048" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.025" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.025" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="268.525" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="246.782" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.385" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="30.967" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.489" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.693" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.630" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="13">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.025 2.05 2.075 2.1 2.125 2.15 2.175 2.2 2.225 2.25 2.275 2.3 2.325
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
267.500 270.000 275.000 277.500 280.000 284.575 290.048 296.711 305.000 315.593 329.604 349.009 377.663
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 63 66 81 75 81 84 69 0 0 0 0
</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 7.8125 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="412">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.75 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 183.5 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 220.25 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 268.525 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0
</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 0.35179353 0.3507929 0.34965166 0.3483729 0.3468153 0.34513062 0.34325272 0.34111932 0.33887988 0.3364047 0.33370727 0.330802 0.3277044 0.32436836 0.32081586 0.31701088 0.31298292 0.30870742 0.304116 0.29931185 0.29412317 0.28874603 0.28298274 0.27686438 0.27037144 0.26346487 0.25618252 0.24836415 0.2400988 0.23120971 0.22173098 0.21158703 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 0.2 0.20209524 0.20628572 0.21047619 0.21466666 0.21885714 0.22304761 0.22723809 0.23142858 0.23561905 0.23980953 0.244 0.24819048 0.25238097 0.25657144 0.26076192 0.2649524 0.26914287 0.27333334 0.27752382 0.2817143 0.28590477 0.29009524 0.2942857 0.2984762 0.30266666 0.30685714 0.3110476 0.3152381 0.31942856 0.32361904 0.3278095 0.332 0.33619046 0.34038097 0.34457144 0.34876192 0.3529524 0.354 0.37512398 0.40509245 0.4368707 0.4702117 0.5049522 0.54100686 0.57833445 0.61695987 0.6569204 0.69829404 0.74117947 0.78567123 0.8318727 0.87988853 0.9298333 0.98177737 1.0357842 1.0918686 1.1500105 1.2100812 1.271921 1.3352317 1.3996446 1.4646662 1.5297532 1.5942966 1.6576935 1.719388 1.7788625 1.8357129 1.8896319 1.940399 1.9878756 2.0320017 2.0727665 2.1101997 2.1443653 2.1753182 2.2031415 2.2279236 2.24974 2.268665 2.2847638 2.2980964 2.3087156 2.3166611 2.3219624 2.3246403 2.325 2.3248172 2.32326 2.3201644 2.315593 2.3096085 2.3022742 2.293653 2.2838075 2.2727995 2.2606907 2.247541 2.23341 2.2183554 2.2024343 2.1857023 2.1682134 2.1500196 2.1311724 2.1117206 2.0917122 2.071193 2.0502071 2.0287974 2.0070045 1.9848682 1.9624256 1.9397129 1.9167643 1.8936126 1.8702891 1.8468233 1.8232436 1.7995768 1.775848 1.7520814 1.7282996 1.704524 1.6807747 1.6570708 1.63343 1.609869 1.5864035 1.5630482 1.5398166 1.5167215 1.4937748 1.4709873 1.4483691 1.4259299 1.4036779 1.3816214 1.3597674 1.3381225 1.3166927 1.2954836 1.2744998 1.2537458 1.2332253 1.212942 1.1928985 1.1730976 1.1535413 1.1342314 1.1151695 1.0963565 1.0777932 1.0594803 1.0414181 1.0236062 1.0060447 0.9887332 0.9716708 0.9548568 0.9382902 0.92196965 0.905894 0.8900616 0.87447095 0.8591203 0.84400773 0.8291314 0.8144892 0.80007905 0.7858987 0.7719459 0.75821835 0.7447136 0.73142934 0.7183629 0.705512 0.69287384 0.680446 0.6682258 0.6562107 0.644398 0.63278496 0.621369 0.61014754 0.5991177 0.588277 0.57762265 0.567152 0.5568625 0.5467513 0.536816 0.5270538 0.5174621 0.50803834 0.49877998 0.48968443 0.48074916 0.4719716 0.46334934 0.45487985 0.4465607 0.4383895 0.4303638 0.42248124 0.4147395 0.40713623 0.39966914 0.39233598 0.38513452 0.37806255 0.37111786 0.36429834 0.35760185 0.3510263 0.3445696 0.33822972 0.3320047 0.32589248 0.31989118 0.31399885 0.3082136 0.30253354 0.29695687 0.29148176 0.28610644 0.28082913 0.27564812 0.27056172 0.26556823 0.260666 0.25585347 0.251129 0.246491 0.24193797 0.23746838 0.23308071 0.22877353 0.22454537 0.22039485 0.21632051 0.21232104 0.20839506 0.20454125 0.2007583 0.19704494 0.1933999 0.18982194 0.18630987 0.18286248 0.17947857 0.17615703 0.1728967 0.16969647 0.16655523 0.16347192 0.1604455 0.15747492 0.15455914 0.15169719 0.14888805 0.14613079 0.14342444 0.14076808 0.13816078 0.13560165 0.13308981 0.13062438 0.12820452 0.1258294 0.12349818 0.12121006 0.118964255 0.11675998 0.11459647 0.11247298 0.11038877 0.108343124 0.10633532 0.10436467 0.10243049 0.10053211 0.09866886 0.0968401 0.09504519 0.09328351 0.09155444 0.08985739 0.08819176 0.08655697 0.08495246 0.08337766 0.08183203 0.080315016 0.078826115 0.07736478 0.07593052 0.07452283 0.07314122 0.0717852 0.07045431 0.06914807 0.067866035 0.06660776 0.065372795 0.06416071 0.06297109 0.06180352 0.060657583 0.059532885 0.058429033 0.057345636 0.05628232 0.05523871 0.054214444 0.053209163 0.052222516 0.051254157 0.050303746

</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="2.325" PeakHeight="268.525" Num="5" zHalfNm="246.782" Error="1.986">
-50.274 3.584 -2.522 1.23 -0.293
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6516.75" A="-1.12596525E11" B="3.4752012E7" C="-2681.3572" Error="0.00175"/>
<QuasiParabolic ID="2" StartDistance="6516.75" EndDistance="6553.5" A="0.0" B="1414.3905" C="-0.17699938" Error="0.0294"/>
<QuasiParabolic ID="3" StartDistance="6553.5" EndDistance="6585.0" A="1.43255265E10" B="-4458534.0" C="346.81512" Error="0.0294"/>
<QuasiParabolic ID="4" StartDistance="6585.0" EndDistance="6590.0" A="8.6229896E11" B="-2.6200552E8" C="19902.395" Error="0.0438"/>
<QuasiParabolic ID="5" StartDistance="6590.0" EndDistance="6606.0" A="5.3988074E12" B="-1.63879104E9" C="124362.6" Error="0.0721"/>
<QuasiParabolic ID="6" StartDistance="6606.0" EndDistance="6619.0" A="1.00203359E13" B="-3.03798221E9" C="230265.66" Error="0.0253"/>
<QuasiParabolic ID="7" StartDistance="6619.0" EndDistance="6638.525" A="-1.1514627E13" B="3.46903168E9" C="-261274.9" Error="0.0102"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="110.25" Depth="0.154"/>
<TopsideChapman PeakHeight="268.525" PeakDensity="67067.305" PeakScaleHeight="16.693" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
