<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-22 -112 22:15:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 80% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.22 (112) 22:15:00</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">
FF202611204222215001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.925" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.521" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.819" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" 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="0.225" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="267.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.359" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="253.501" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="219.740" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.312" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="47.824" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.074" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="26.515" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="38.250" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.740" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="54">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 220.000 220.000 220.000 220.000 222.500 222.500 223.750 225.000 225.000 225.000 227.500 227.500 228.333 229.167 230.000 230.833 231.667 232.500 233.333 234.167 235.000 240.000 240.000 240.000 242.500 242.500 245.000 245.000 247.500 250.000 252.500 252.500 255.000 257.500 260.000 262.500 265.000 267.500 272.500 277.500 279.898 282.593 285.643 289.123 293.132 297.800 303.304 309.890 317.913 327.900 340.673 357.587 381.045
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 54 54 57 54 54 0 57 36 36 33 30 0 0 0 0 0 0 0 0 66 66 84 84 66 72 69 72 99 90 66 69 75 75 72 66 72 72 75 63 66 69 69 69 45 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="577">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.359" PeakHeight="110.0" Num="3" Error="0.0">
-18.969 2.509 -0.15
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.359" EndFrequency="3.925" PeakHeight="253.501" Num="5" zHalfNm="219.74" Error="2.512">
-79.479 21.879 -13.272 6.37 -1.999
</ShiftedChebyshev>
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<QuasiParabolic ID="9" StartDistance="6581.0" EndDistance="6587.0" A="6.4757944E13" B="-1.9693953E10" C="1497315.5" Error="0.00355"/>
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<ProfileValley Model="ULCAR" Width="77.0" Depth="0.159"/>
<TopsideChapman PeakHeight="253.501" PeakDensity="191136.78" PeakScaleHeight="26.515" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
