<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-14 -104 04:20:00.000"
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" >
2026.04.14 (104) 04:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" 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">
FF202610404140420001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.560" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.416" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.375" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.375" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.425" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" 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="3.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="281.069" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.375" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.375" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="257.078" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="226.829" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.408" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="42.887" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.975" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.590" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.220" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.570" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="68">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 230.000 230.000 230.000 232.500 232.500 232.500 232.500 232.500 232.500 235.000 235.000 235.000 235.000 235.000 237.500 237.500 237.500 238.750 240.000 240.000 240.000 240.833 241.667 242.500 242.500 242.500 242.500 245.000 245.000 245.000 245.000 247.500 250.000 250.000 250.000 250.000 250.000 252.500 252.500 255.000 255.000 257.500 257.500 260.000 260.000 262.500 265.000 265.000 265.000 267.500 270.000 270.000 272.500 274.247 276.222 278.476 281.069 284.086 287.639 291.886 297.051 303.469 311.659 322.471 337.403 359.369 394.867
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
84 84 75 72 72 72 75 75 75 72 72 78 75 75 72 72 75 75 0 45 54 54 0 0 69 69 81 84 81 84 87 84 111 102 99 99 87 87 99 99 102 102 99 99 84 87 108 99 84 84 81 72 75 78 78 72 63 60 0 84 84 87 87 87 84 81 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="535">
<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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</ProfileValueList>
</Tabulated>
<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="4.05" PeakHeight="257.078" Num="5" zHalfNm="226.829" Error="1.292">
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</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="14" EarthRadius="6370.0">
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<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6508.0" A="-1.93482834E11" B="5.9716924E7" C="-4607.662" Error="0.00161"/>
<QuasiParabolic ID="2" StartDistance="6508.0" EndDistance="6536.0" A="0.0" B="-105.17516" C="0.05618391" Error="0.00231"/>
<QuasiParabolic ID="3" StartDistance="6536.0" EndDistance="6538.0" A="4.84909416E11" B="-1.4844352E8" C="11360.653" Error="0.00974"/>
<QuasiParabolic ID="4" StartDistance="6538.0" EndDistance="6556.0" A="3.8750093E10" B="-1.196162E7" C="923.0659" Error="0.00999"/>
<QuasiParabolic ID="5" StartDistance="6556.0" EndDistance="6563.0" A="1.09048242E11" B="-3.340706E7" C="2558.6243" Error="0.00198"/>
<QuasiParabolic ID="6" StartDistance="6563.0" EndDistance="6570.0" A="5.6135516E12" B="-1.71084211E9" C="130353.47" Error="0.00991"/>
<QuasiParabolic ID="7" StartDistance="6570.0" EndDistance="6572.0" A="4.7827019E12" B="-1.45791987E9" C="111105.195" Error="0.00112"/>
<QuasiParabolic ID="8" StartDistance="6572.0" EndDistance="6577.0" A="6.64778E12" B="-2.02550298E9" C="154287.11" Error="0.00158"/>
<QuasiParabolic ID="9" StartDistance="6577.0" EndDistance="6581.0" A="1.1203763E13" B="-3.41093171E9" C="259610.88" Error="6.75E-4"/>
<QuasiParabolic ID="10" StartDistance="6581.0" EndDistance="6586.0" A="2.1341315E13" B="-6.4917862E9" C="493682.8" Error="0.00359"/>
<QuasiParabolic ID="11" StartDistance="6586.0" EndDistance="6594.0" A="5.7890073E13" B="-1.75907103E10" C="1336297.8" Error="0.00906"/>
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<QuasiParabolic ID="13" StartDistance="6611.0" EndDistance="6627.078" A="-1.40393191E13" B="4.2369559E9" C="-319653.6" Error="0.00173"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="84.0" Depth="0.154"/>
<TopsideChapman PeakHeight="257.078" PeakDensity="203504.97" PeakScaleHeight="23.59" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
