<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 02:00:00.000"
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" >
2026.04.15 (105) 02:00:00</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">
FF202610504150200001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.339" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.853" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.575" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="272.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="272.500" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.975" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="301.041" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="289.291" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="259.978" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.907" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="41.891" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.255" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.670" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="38.080" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="25">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.65 2.675 2.7 2.725 2.75 2.775 2.8 2.825 2.85 2.875 2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2 3.225 3.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
272.500 274.643 276.786 278.929 281.071 283.214 285.357 287.500 287.500 289.641 292.019 294.675 297.660 301.041 304.902 309.352 314.538 320.659 327.991 336.935 348.087 362.381 381.362 407.787 447.105
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 0 0 0 0 0 0 51 54 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.5625 1.5625 -1.5625 10.9375 1.5625 -1.5625 1.5625 -1.5625 -1.5625 1.5625 -1.5625 -7.8125 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -7.8125 -1.5625 -1.5625 4.6875 -1.5625 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="540">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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</AltitudeList>
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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">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="3.25" PeakHeight="289.291" Num="5" zHalfNm="259.978" Error="2.97">
-72.368 7.663 -5.6 3.012 -0.893
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6517.035" A="-1.10885487E11" B="3.4223916E7" C="-2640.609" Error="0.00177"/>
<QuasiParabolic ID="2" StartDistance="6517.035" EndDistance="6554.07" A="0.0" B="767.98413" C="-0.07780697" Error="0.0158"/>
<QuasiParabolic ID="3" StartDistance="6554.07" EndDistance="6589.0" A="2.36404081E10" B="-7292484.5" C="562.3622" Error="0.0158"/>
<QuasiParabolic ID="4" StartDistance="6589.0" EndDistance="6592.0" A="3.23456126E12" B="-9.819232E8" C="74521.29" Error="0.0446"/>
<QuasiParabolic ID="5" StartDistance="6592.0" EndDistance="6613.0" A="3.972413E12" B="-1.20578598E9" C="91501.17" Error="0.0532"/>
<QuasiParabolic ID="6" StartDistance="6613.0" EndDistance="6630.0" A="1.48888586E13" B="-4.5072968E9" C="341123.94" Error="0.0115"/>
<QuasiParabolic ID="7" StartDistance="6630.0" EndDistance="6659.291" A="-1.20109463E13" B="3.60727475E9" C="-270834.7" Error="0.00339"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.105" Depth="0.154"/>
<TopsideChapman PeakHeight="289.291" PeakDensity="131048.39" PeakScaleHeight="22.67" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
