<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-01 -091 06:45:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.01 (091) 06:45:00</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="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609104010645001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.675" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.593" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.392" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.425" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.425" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.375" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="281.216" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.425" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.425" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="253.146" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="225.849" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.098" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="38.855" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.433" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.757" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="33.520" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.480" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="131">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 225.000 225.000 225.000 225.000 226.250 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.500 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 232.500 232.500 232.500 232.500 232.500 232.500 232.500 232.500 232.500 232.500 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 237.500 237.500 237.500 237.500 237.500 237.500 237.500 237.500 238.000 238.500 239.000 239.500 240.000 240.000 240.000 240.000 240.000 242.500 242.500 242.500 242.500 242.500 242.500 242.500 242.500 245.000 245.000 245.000 245.000 245.000 247.500 247.500 247.500 247.500 247.500 250.000 250.000 250.000 250.000 250.000 250.000 252.500 252.500 252.500 252.500 255.000 255.000 255.000 255.000 255.000 257.500 257.500 257.500 260.000 260.000 260.000 260.000 262.500 262.500 262.500 265.000 267.500 267.500 267.500 267.500 270.000 270.000 272.500 275.000 275.000 277.500 277.500 278.588 279.817 281.216 282.822 284.685 286.873 289.478 292.632 296.529 301.469 307.931 316.749 329.500 349.568 385.784
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 75 87 0 78 0 75 75 75 78 75 78 75 0 75 75 51 54 42 0 0 0 63 63 87 87 96 96 99 99 102 99 102 102 102 99 72 72 111 111 99 99 0 75 81 81 72 75 72 75 72 72 0 0 0 0 90 93 96 96 105 102 81 81 96 96 96 96 93 96 96 99 102 99 99 99 102 102 90 84 63 63 87 84 93 93 69 72 105 102 93 96 96 96 96 99 111 108 72 72 108 105 96 96 96 87 69 72 72 69 105 102 84 90 90 93 105 105 105 108 108 108 69 66 63 63 63 57 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="512">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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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="5.675" PeakHeight="253.146" Num="5" zHalfNm="225.849" Error="0.414">
-69.341 11.386 -6.861 2.36 -0.19
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" EarthRadius="6370.0">
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<QuasiParabolic ID="3" StartDistance="6533.667" EndDistance="6559.0" A="1.09961388E11" B="-3.3724664E7" C="2585.833" Error="0.0508"/>
<QuasiParabolic ID="4" StartDistance="6559.0" EndDistance="6571.0" A="6.3196464E12" B="-1.92720998E9" C="146928.38" Error="0.039"/>
<QuasiParabolic ID="5" StartDistance="6571.0" EndDistance="6578.0" A="1.96243976E13" B="-5.9767465E9" C="455065.34" Error="0.0127"/>
<QuasiParabolic ID="6" StartDistance="6578.0" EndDistance="6594.0" A="6.1091745E13" B="-1.85846354E10" C="1413402.9" Error="0.0307"/>
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</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="80.5" Depth="0.154"/>
<TopsideChapman PeakHeight="253.146" PeakDensity="399573.5" PeakScaleHeight="20.757" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
