<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-23 -113 04:25:00.000"
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: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.23 (113) 04:25:00</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">
FF202611304230425001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.265" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.979" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="330.377" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="292.749" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.889" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.402" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="45.549" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.985" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="24.739" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="41.220" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.180" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="31">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 275.000 277.500 280.000 280.000 282.500 282.500 285.000 287.500 287.500 290.000 292.500 292.500 295.000 297.500 300.000 302.063 304.337 306.856 309.661 312.804 316.351 320.385 325.013 330.377 336.667 344.147 353.188 364.337 378.428 396.804
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 69 66 69 78 81 69 66 57 57 54 57 54 54 66 66 69 66 72 69 66 66 69 66 63 0 0 63 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="561">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
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</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="2.75" PeakHeight="292.749" Num="5" zHalfNm="260.889" Error="1.793">
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</ShiftedChebyshev>
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<ProfileValley Model="ULCAR" Width="111.938" Depth="0.154"/>
<TopsideChapman PeakHeight="292.749" PeakDensity="93827.55" PeakScaleHeight="24.739" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
