<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 01:05:00.000"
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" >
2026.04.16 (106) 01:05:00</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">
FF202610604160105001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.975" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.195" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.504" 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="3.325" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="247.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="247.500" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="340.974" 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="287.100" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="249.112" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.238" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="54.006" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.340" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="29.176" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="47.190" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.350" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="40">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
247.500 250.000 252.500 252.500 255.000 255.000 255.000 257.500 260.000 262.500 265.000 267.500 270.000 270.000 272.500 275.000 277.500 282.500 285.000 285.000 287.500 292.500 295.000 300.000 302.500 307.500 312.500 320.000 322.500 327.500 331.544 336.012 340.974 346.516 352.747 359.804 367.862 377.152 387.977 400.754
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 78 75 66 66 81 78 78 81 69 69 54 54 54 54 66 66 78 81 69 69 69 66 69 69 66 66 63 69 69 69 54 54 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="627">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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<ProfileValley Model="ULCAR" Width="96.25" Depth="0.154"/>
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</Profile>
</ProfileList>
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