<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-23 -113 05:40:00.000"
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" >
2026.04.23 (113) 05:40:00</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">
FF202611304230540001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.275" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.678" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.225" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.225" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="307.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="307.500" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="350.559" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.225" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.225" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="292.076" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="263.648" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.363" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.426" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.801" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.972" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="42.450" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.790" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="18">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 2.575 2.6 2.625 2.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
307.500 309.583 311.667 313.750 315.833 317.917 320.000 322.046 324.305 326.814 329.616 332.765 336.331 340.402 345.093 350.559 357.006 364.728
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 0 0 0 66 0 69 69 66 66 0 0 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 -7.8125 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="504">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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<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="2.65" PeakHeight="292.076" Num="5" zHalfNm="263.648" Error="1.07">
-69.257 -4.856 3.136 -1.69 0.604
</ShiftedChebyshev>
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<QuasiParabolicList Num="11" 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="6516.671" A="-1.13081033E11" B="3.4901552E7" C="-2692.8958" Error="0.00174"/>
<QuasiParabolic ID="2" StartDistance="6516.671" EndDistance="6553.342" A="0.0" B="518.6919" C="-0.03955595" Error="0.0102"/>
<QuasiParabolic ID="3" StartDistance="6553.342" EndDistance="6555.0" A="-2.06605818E12" B="6.3032774E8" C="-48076.18" Error="0.0287"/>
<QuasiParabolic ID="4" StartDistance="6555.0" EndDistance="6577.0" A="7.6232032E10" B="-2.330768E7" C="1781.5973" Error="0.0399"/>
<QuasiParabolic ID="5" StartDistance="6577.0" EndDistance="6588.0" A="-4.6875849E10" B="1.4128198E7" C="-1064.3718" Error="0.00631"/>
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<QuasiParabolic ID="7" StartDistance="6593.0" EndDistance="6606.0" A="2.05333384E12" B="-6.2372397E8" C="47365.938" Error="0.0383"/>
<QuasiParabolic ID="8" StartDistance="6606.0" EndDistance="6618.0" A="4.7606179E12" B="-1.44336806E9" C="109403.79" Error="0.0111"/>
<QuasiParabolic ID="9" StartDistance="6618.0" EndDistance="6650.0" A="1.99374563E12" B="-6.0720224E8" C="46230.188" Error="0.0248"/>
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<ProfileValley Model="ULCAR" Width="110.013" Depth="0.154"/>
<TopsideChapman PeakHeight="292.076" PeakDensity="87127.79" PeakScaleHeight="20.972" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
