<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-20 -140 21:30:00.000"
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="20.0">
<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" >
2026.05.20 (140) 21:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202614005202130001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.675" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.731" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.445" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.575" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.575" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="227.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="227.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.575" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="278.588" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.507" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.575" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.575" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="235.906" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="218.313" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.071" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="25.200" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.551" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.353" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="24.810" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.230" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="45">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6 4.625 4.65 4.675
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
227.500 227.500 227.500 228.750 230.000 230.750 231.500 232.250 233.000 233.750 234.500 235.250 236.000 236.750 237.500 238.750 240.000 240.000 242.500 242.500 242.500 245.000 245.000 247.500 247.500 250.000 250.000 251.250 252.500 253.750 255.000 257.500 258.912 260.471 262.202 264.136 266.309 268.770 271.579 274.816 278.588 283.037 288.365 294.862 302.957
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 60 57 60 60 57 0 0 0 0 0 0 66 45 42 72 72 72 75 63 63 87 87 63 63 63 57 84 81 60 63 63 60 48 48 45 42 0 54 81 81 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 3.125 9.375 -3.125 -3.125 -3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="365">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
91.598 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 137.41667 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 164.83333 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 192.25 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 235.906 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.507" PeakHeight="110.0" Num="3" Error="0.0">
-22.417 4.426 -0.411
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.507" EndFrequency="4.675" PeakHeight="235.906" Num="5" zHalfNm="218.313" Error="0.93">
-44.315 1.252 -0.94 0.53 -0.183
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.001" EndDistance="6480.001" A="-1.12629318E12" B="3.47621344E8" C="-26822.379" Error="0.0124"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6507.417" A="-4.92404343E11" B="1.51976656E8" C="-11726.336" Error="0.00481"/>
<QuasiParabolic ID="2" StartDistance="6507.417" EndDistance="6534.833" A="0.0" B="-361.6738" C="0.10446908" Error="0.00579"/>
<QuasiParabolic ID="3" StartDistance="6534.833" EndDistance="6560.0" A="2.10850759E11" B="-6.472212E7" C="4966.734" Error="0.00579"/>
<QuasiParabolic ID="4" StartDistance="6560.0" EndDistance="6561.0" A="-3.8310799E12" B="1.16757376E9" C="-88958.26" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6561.0" EndDistance="6565.0" A="1.99336667E13" B="-6.0766715E9" C="463110.4" Error="0.0169"/>
<QuasiParabolic ID="6" StartDistance="6565.0" EndDistance="6567.0" A="9.2122582E12" B="-2.81043891E9" C="214349.38" Error="0.00709"/>
<QuasiParabolic ID="7" StartDistance="6567.0" EndDistance="6573.0" A="2.17591767E13" B="-6.6316411E9" C="505289.1" Error="0.00273"/>
<QuasiParabolic ID="8" StartDistance="6573.0" EndDistance="6587.0" A="4.3208994E13" B="-1.31582863E10" C="1001762.94" Error="0.0181"/>
<QuasiParabolic ID="9" StartDistance="6587.0" EndDistance="6595.0" A="1.0945012E12" B="-3.71131584E8" C="31127.236" Error="0.00996"/>
<QuasiParabolic ID="10" StartDistance="6595.0" EndDistance="6605.906" A="-7.8321874E13" B="2.3712682E10" C="-1794787.4" Error="0.00433"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="82.25" Depth="0.286"/>
<TopsideChapman PeakHeight="235.906" PeakDensity="271161.6" PeakScaleHeight="13.353" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
