<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-11 -131 22:45:00.000"
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: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.11 (131) 22:45:00</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">
FF202613105112245001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.262" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.602" 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="3.625" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="2.975" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="313.445" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" 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="298.916" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="262.231" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.617" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="52.518" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.559" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="28.111" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="50.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.520" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2 3.225 3.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 310.000 313.445 317.415 322.041 327.500 334.039 342.015 351.959 364.701 381.616 405.157 440.163 497.708
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 60 60 72 75 84 87 87 84 84 81 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 -1.5625 -1.5625 1.5625 1.5625 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="631">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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