<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-30 -120 05:30:00.000"
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" >
2026.04.30 (120) 05:30:00</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">
FF202612004300530001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.195" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.621" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="282.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="282.500" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="345.454" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="300.537" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="268.986" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.374" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="45.273" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.975" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="24.117" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="43.690" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.410" 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" >
282.500 282.500 285.000 285.000 287.500 287.500 290.000 290.000 292.500 292.500 295.000 297.500 297.500 297.500 300.000 300.000 302.500 305.000 307.500 310.000 315.000 315.000 317.500 317.500 322.500 325.000 330.000 332.500 335.162 338.159 341.561 345.454 349.953 355.213 361.442 368.938 378.128 389.663 404.570 424.581
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 81 81 81 93 93 93 96 90 93 93 90 93 90 93 93 93 93 93 96 75 78 66 69 81 81 81 78 78 78 60 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="588">
<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="3.95" PeakHeight="300.537" Num="5" zHalfNm="268.986" Error="2.053">
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<ProfileValley Model="ULCAR" Width="110.544" Depth="0.154"/>
<TopsideChapman PeakHeight="300.537" PeakDensity="193579.4" PeakScaleHeight="24.117" />
</Profile>
</ProfileList>
</SAORecord>
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