<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-11 -131 21:15:00.000"
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: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.11 (131) 21:15:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" 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">
FF202613105112115001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.725" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.020" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.925" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.925" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.625" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="207.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="207.500" 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="4.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="260.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.718" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.925" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.925" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="233.082" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="203.142" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.427" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="43.030" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.286" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.866" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.110" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.920" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="56">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
207.500 212.500 212.500 212.500 212.500 212.500 212.500 212.500 212.500 212.500 215.000 215.000 215.000 215.000 217.500 217.500 217.500 220.000 220.000 222.500 222.500 222.500 225.000 227.500 227.500 227.500 228.750 230.000 230.000 230.000 230.000 232.500 235.000 237.500 237.500 240.000 242.500 242.500 245.000 247.500 247.500 250.000 252.500 257.500 260.000 260.000 265.000 267.500 271.990 277.440 284.193 292.782 304.073 319.577 342.195 378.280
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
18 18 33 30 54 54 66 66 69 69 72 69 72 69 66 69 90 90 81 75 75 81 60 63 51 57 45 42 42 48 48 51 54 45 30 30 60 60 75 72 69 0 72 72 75 78 78 78 99 99 84 87 87 87 66 63
</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="526">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.718" PeakHeight="110.0" Num="3" Error="0.0">
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</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.718" EndFrequency="4.3" PeakHeight="233.082" Num="5" zHalfNm="203.142" Error="1.384">
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</ShiftedChebyshev>
</ShiftedChebyshevList>
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<QuasiParabolic ID="2" StartDistance="6502.75" EndDistance="6525.5" A="0.0" B="4363.8735" C="-0.4871934" Error="0.00893"/>
<QuasiParabolic ID="3" StartDistance="6525.5" EndDistance="6547.0" A="2.26527986E11" B="-6.9926672E7" C="5396.305" Error="0.00893"/>
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<ProfileValley Model="ULCAR" Width="68.25" Depth="0.29"/>
<TopsideChapman PeakHeight="233.082" PeakDensity="229404.47" PeakScaleHeight="23.866" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
