<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-01 -121 23:55:00.000"
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" >
2026.05.01 (121) 23:55:00</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="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612105012355001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.514" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.338" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" 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="4.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="285.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="260.775" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="236.145" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.954" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="35.245" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.126" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.938" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="32.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.960" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="67">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
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</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
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</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="476">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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<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="4.65" PeakHeight="260.775" Num="5" zHalfNm="236.145" Error="1.277">
-64.05 7.291 -4.647 2.573 -0.942
</ShiftedChebyshev>
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<QuasiParabolicList Num="12" EarthRadius="6370.0">
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<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6510.333" A="-1.64983013E11" B="5.0920684E7" C="-3928.9397" Error="0.00156"/>
<QuasiParabolic ID="2" StartDistance="6510.333" EndDistance="6540.667" A="0.0" B="192.80026" C="0.010408477" Error="0.00286"/>
<QuasiParabolic ID="3" StartDistance="6540.667" EndDistance="6543.0" A="-2.43157877E11" B="7.4239888E7" C="-5666.5957" Error="0.00955"/>
<QuasiParabolic ID="4" StartDistance="6543.0" EndDistance="6570.0" A="5.6537756E10" B="-1.7368132E7" C="1333.8644" Error="0.00958"/>
<QuasiParabolic ID="5" StartDistance="6570.0" EndDistance="6574.0" A="7.6299313E12" B="-2.32281523E9" C="176786.45" Error="0.00664"/>
<QuasiParabolic ID="6" StartDistance="6574.0" EndDistance="6579.0" A="7.2087314E12" B="-2.19467392E9" C="167040.39" Error="0.00474"/>
<QuasiParabolic ID="7" StartDistance="6579.0" EndDistance="6587.0" A="1.07709989E13" B="-3.27759462E9" C="249341.7" Error="0.00923"/>
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<ProfileValley Model="ULCAR" Width="91.0" Depth="0.154"/>
<TopsideChapman PeakHeight="260.775" PeakDensity="268269.22" PeakScaleHeight="18.938" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
