<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-23 -113 04:30:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.23 (113) 04:30:00</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">
FF202611304230430001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.725" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.246" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.844" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.075" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="322.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="322.500" 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="2.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="351.237" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="295.675" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="265.471" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.397" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="43.057" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.904" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.649" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="43.750" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.010" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="10">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
322.500 327.500 332.500 335.000 339.439 344.756 351.237 359.315 369.660 383.384
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 66 69 69 63 69 66 66 66
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.5625 -1.5625 -1.5625 -1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="533">
<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">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="2.725" PeakHeight="295.675" Num="5" zHalfNm="265.471" Error="0.468">
-73.356 -0.82 0.543 -0.327 0.145
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.0205" EndDistance="6480.001" A="-5.5027394E11" B="1.69837632E8" C="-13104.63" Error="0.0016"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6517.287" A="-1.094004E11" B="3.3765556E7" C="-2605.2417" Error="0.00179"/>
<QuasiParabolic ID="2" StartDistance="6517.287" EndDistance="6554.573" A="0.0" B="778.8748" C="-0.07947362" Error="0.0161"/>
<QuasiParabolic ID="3" StartDistance="6554.573" EndDistance="6591.0" A="2.42859397E10" B="-7488465.5" C="577.23566" Error="0.0161"/>
<QuasiParabolic ID="4" StartDistance="6591.0" EndDistance="6593.0" A="6.896368E12" B="-2.09278106E9" C="158769.67" Error="0.0118"/>
<QuasiParabolic ID="5" StartDistance="6593.0" EndDistance="6594.0" A="-1.57230052E12" B="4.7620672E8" C="-36057.258" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6594.0" EndDistance="6595.0" A="3.17815076E12" B="-9.6463386E8" C="73196.66" Error="9.15E-11"/>
<QuasiParabolic ID="7" StartDistance="6595.0" EndDistance="6603.0" A="1.77714679E12" B="-5.3976531E8" C="40985.24" Error="0.00577"/>
<QuasiParabolic ID="8" StartDistance="6603.0" EndDistance="6639.0" A="3.99794189E12" B="-1.21242778E9" C="91921.36" Error="0.0142"/>
<QuasiParabolic ID="9" StartDistance="6639.0" EndDistance="6654.0" A="-3.25605078E12" B="9.7283891E8" C="-72656.63" Error="0.00388"/>
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<ProfileValley Model="ULCAR" Width="111.86" Depth="0.154"/>
<TopsideChapman PeakHeight="295.675" PeakDensity="92129.34" PeakScaleHeight="22.649" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
