<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 07:35:00.000"
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) 07:35:00</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">
FF202611004200735001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.589" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.151" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.075" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.075" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.875" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="242.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="242.500" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="277.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.075" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.075" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="252.003" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="230.771" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.776" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="30.244" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.565" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.198" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.430" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="20">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.075 2.1 2.125 2.15 2.175 2.2 2.225 2.25 2.275 2.3 2.325 2.35 2.375 2.4 2.425 2.45 2.475 2.5 2.525 2.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
242.500 242.500 243.750 245.000 247.500 250.000 252.500 255.000 257.500 260.000 265.000 270.000 275.000 277.500 283.952 291.793 301.524 313.922 330.259 352.766
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 78 0 78 0 78 66 0 0 51 0 51 63 63 81 75 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 1.5625 -1.5625 1.5625 -1.5625 -1.5625 1.5625 -10.9375 -1.5625 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="393">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 140.91667 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 171.83333 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 202.75 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 252.003 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0
</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 0.35347393 0.3529119 0.3519786 0.3509026 0.34953943 0.34789655 0.34598285 0.3438088 0.34138623 0.3386593 0.33571413 0.33243394 0.32884502 0.3249759 0.3207348 0.3162249 0.311316 0.3060709 0.30039963 0.29436976 0.2878726 0.28096467 0.27349284 0.26549044 0.25688842 0.24761072 0.23761433 0.22685163 0.21513027 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 0.20083019 0.20581132 0.21079245 0.21577358 0.22075471 0.22573584 0.23071699 0.23569812 0.24067925 0.24566038 0.2506415 0.25562266 0.2606038 0.26558492 0.27056605 0.27554718 0.2805283 0.28550944 0.29049057 0.2954717 0.30045283 0.30543396 0.3104151 0.31539622 0.32037735 0.32535848 0.3303396 0.33532074 0.3403019 0.34528303 0.35026416 0.354 0.361531 0.39204 0.42328855 0.45543942 0.48862237 0.522986 0.55864805 0.5957489 0.63441736 0.67478323 0.7169739 0.76112413 0.8073637 0.85579836 0.90654474 0.95969576 1.0153016 1.073389 1.1339306 1.1968516 1.2619839 1.329091 1.3978528 1.4678578 1.538629 1.6096485 1.6803585 1.7501968 1.8186249 1.8851825 1.9494163 2.0110087 2.0696566 2.1251552 2.1773598 2.2261574 2.27149 2.3133245 2.35167 2.3865268 2.4179213 2.4458864 2.4704597 2.4916701 2.5095546 2.524144 2.5354655 2.543539 2.5483809 2.5499938 2.55 2.5490687 2.546313 2.5418077 2.535628 2.52785 2.518549 2.5078006 2.495679 2.4822583 2.4676113 2.4518092 2.434922 2.4170184 2.3981647 2.378426 2.3578653 2.336544 2.314521 2.2918532 2.268596 2.244802 2.220522 2.195805 2.1706977 2.1452446 2.1194882 2.0934696 2.0672274 2.040798 2.0142167 1.9875164 1.9607286 1.9338831 1.9070075 1.8801283 1.8532704 1.8264571 1.7997104 1.7730505 1.7464968 1.7200671 1.6937782 1.6676453 1.6416831 1.6159048 1.5903226 1.5649478 1.539791 1.5148616 1.4901683 1.465719 1.4415207 1.41758 1.3939028 1.3704938 1.3473579 1.3244989 1.3019202 1.2796247 1.257615 1.235893 1.2144601 1.1933179 1.1724668 1.1519074 1.1316401 1.1116644 1.0919801 1.0725863 1.0534823 1.0346668 1.0161386 0.9978958 0.97993696 0.9622601 0.9448632 0.927744 0.9109002 0.89432937 0.8780289 0.86199635 0.84622884 0.83072364 0.8154778 0.8004885 0.7857526 0.77126724 0.75702924 0.74303555 0.72928303 0.7157685 0.70248884 0.6894407 0.6766211 0.6640267 0.65165424 0.6395007 0.62756264 0.61583704 0.60432065 0.5930103 0.58190286 0.57099515 0.5602841 0.54976654 0.5394394 0.5292997 0.51934433 0.50957036 0.49997476 0.4905546 0.481307 0.47222906 0.46331793 0.4545708 0.44598487 0.43755743 0.4292857 0.42116705 0.41319883 0.40537843 0.39770326 0.39017075 0.38277847 0.3755239 0.3684046 0.3614182 0.3545623 0.34783465 0.34123287 0.33475474 0.32839802 0.32216054 0.31604016 0.31003475 0.3041422 0.29836047 0.29268757 0.28712147 0.28166023 0.27630195 0.27104476 0.26588672 0.2608261 0.25586104 0.25098982 0.24621066 0.24152191 0.23692185 0.23240885 0.2279813 0.22363761 0.2193762 0.21519558 0.2110942 0.2070706 0.20312333 0.19925095 0.19545208 0.19172531 0.18806933 0.18448277 0.18096435 0.1775128 0.17412683 0.17080525 0.16754681 0.16435035 0.16121468 0.15813865 0.15512116 0.15216109 0.14925738 0.14640892 0.1436147 0.14087367 0.13818486 0.13554725 0.13295989 0.13042182 0.1279321 0.12548983 0.1230941 0.12074403 0.11843874 0.11617741 0.11395919 0.11178326 0.10964882 0.10755508 0.105501264 0.10348663 0.10151041 0.09957189 0.09767035 0.09580508 0.0939754 0.092180625 0.0904201 0.088693164 0.086999185 0.085337535 0.08370759 0.08210876 0.08054043 0.07900205 0.07749303 0.07601281 0.07456085 0.07313661 0.071739554 0.07036918 0.06902495 0.0677064 0.066413015 0.06514433 0.063899875 0.06267917 0.06148178 0.060307257 0.059155162 0.058025066 0.056916554 0.05582921 0.054762628 0.053716417 0.05269019 0.05168356 0.050696157

</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="2.55" PeakHeight="252.003" Num="5" zHalfNm="230.771" Error="1.991">
-50.361 2.399 -2.128 0.942 -0.105
</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="6510.917" A="-1.58830494E11" B="4.902176E7" C="-3782.4177" Error="0.00166"/>
<QuasiParabolic ID="2" StartDistance="6510.917" EndDistance="6541.833" A="0.0" B="714.6569" C="-0.0697361" Error="0.0123"/>
<QuasiParabolic ID="3" StartDistance="6541.833" EndDistance="6543.0" A="-7.0812366E12" B="2.16449536E9" C="-165403.3" Error="0.0169"/>
<QuasiParabolic ID="4" StartDistance="6543.0" EndDistance="6561.0" A="1.67734411E11" B="-5.1298836E7" C="3922.2727" Error="0.0746"/>
<QuasiParabolic ID="5" StartDistance="6561.0" EndDistance="6570.0" A="-2.17629671E11" B="6.6172308E7" C="-5029.9556" Error="0.0198"/>
<QuasiParabolic ID="6" StartDistance="6570.0" EndDistance="6585.0" A="4.31726526E12" B="-1.31431322E9" C="100029.82" Error="0.0582"/>
<QuasiParabolic ID="7" StartDistance="6585.0" EndDistance="6604.0" A="1.04404772E13" B="-3.1740585E9" C="241240.56" Error="0.0332"/>
<QuasiParabolic ID="8" StartDistance="6604.0" EndDistance="6622.003" A="-1.48104209E13" B="4.4730936E9" C="-337738.28" Error="0.0128"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="92.75" Depth="0.154"/>
<TopsideChapman PeakHeight="252.003" PeakDensity="80676.18" PeakScaleHeight="16.198" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
