<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-12 -102 21:55:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Trace overlaps while constructing baseline</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.12 (102) 21:55:00</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">
FF202610204122155001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.708" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.873" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="195.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="195.000" 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="0.225" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.425" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="278.046" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.538" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="226.029" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="199.473" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.638" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="37.581" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.133" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.672" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.040" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="89">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
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</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
39 0 0 63 66 51 57 0 54 54 54 0 60 0 0 51 60 60 57 0 0 36 30 0 0 54 54 57 57 69 69 72 69 66 72 96 90 78 81 69 66 72 72 66 69 69 69 69 57 63 60 0 63 60 66 54 51 60 0 0 0 72 75 75 75 72 72 93 93 0 72 78 75 75 78 60 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="455">
<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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</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.538" PeakHeight="110.0" Num="3" Error="0.0">
-22.883 4.761 -0.47
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.538" EndFrequency="4.55" PeakHeight="226.029" Num="5" zHalfNm="199.473" Error="2.593">
-60.142 6.041 -2.574 -0.997 1.143
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" EarthRadius="6370.0">
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<QuasiParabolic ID="2" StartDistance="6499.833" EndDistance="6519.667" A="0.0" B="3199.7537" C="-0.35074154" Error="0.00943"/>
<QuasiParabolic ID="3" StartDistance="6519.667" EndDistance="6521.0" A="-1.07378293E13" B="3.29315328E9" C="-252491.72" Error="0.017"/>
<QuasiParabolic ID="4" StartDistance="6521.0" EndDistance="6538.0" A="3.73716124E11" B="-1.1477364E8" C="8812.302" Error="0.0384"/>
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<QuasiParabolic ID="8" StartDistance="6545.0" EndDistance="6550.0" A="1.03445158E13" B="-3.16349363E9" C="241860.31" Error="0.0123"/>
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<ProfileValley Model="ULCAR" Width="59.5" Depth="0.162"/>
<TopsideChapman PeakHeight="226.029" PeakDensity="256854.84" PeakScaleHeight="19.672" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
