<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-18 -077 08:10:00.000"
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: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.03.18 (077) 08:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.18" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="82.25368" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202607703180810001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.275" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.255" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.659" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.275" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.275" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.575" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="333.151" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.275" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.275" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="285.406" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="251.428" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.883" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="48.519" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.457" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="25.909" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="45.890" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.580" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="41">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 261.250 262.500 263.750 265.000 267.500 267.500 270.000 271.875 273.750 275.625 277.500 280.000 282.500 283.750 285.000 287.500 290.000 291.250 292.500 295.000 297.500 300.000 302.500 305.357 308.214 311.071 313.929 316.786 319.643 322.500 325.633 329.157 333.151 337.714 342.977 349.116 356.369 365.069 375.697 388.973
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
42 0 0 0 42 42 66 66 0 0 0 57 0 54 0 54 0 51 0 54 42 0 30 30 0 0 0 0 0 0 63 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="585">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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<ProfileValley Model="ULCAR" Width="95.285" Depth="0.154"/>
<TopsideChapman PeakHeight="285.406" PeakDensity="133072.27" PeakScaleHeight="25.909" />
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