<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 03:25:00.000"
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" >
2026.04.17 (107) 03:25:00</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">
FF202610704170325001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.477" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.821" 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="3.775" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="242.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="242.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.225" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="297.500" 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="263.559" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="236.825" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.554" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="38.204" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.249" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.741" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.170" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="40">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
242.500 243.750 245.000 245.000 247.500 247.500 250.000 250.000 252.500 252.500 252.500 255.000 257.500 257.500 257.500 260.000 262.500 262.500 265.000 266.500 268.000 269.500 271.000 272.500 275.000 277.500 280.000 282.500 285.000 287.500 292.500 295.000 297.500 301.562 306.358 312.108 319.126 327.886 339.126 354.075
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 0 69 69 69 69 72 72 69 69 66 69 66 69 69 69 45 48 57 0 0 0 0 69 93 96 84 84 96 96 90 90 81 81 105 102 78 78 87 87
</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="488">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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</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="3.4" PeakHeight="263.559" Num="5" zHalfNm="236.825" Error="1.736">
-65.825 8.757 -5.616 3.014 -1.139
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="16" EarthRadius="6370.0">
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<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6510.917" A="-1.58830494E11" B="4.902176E7" C="-3782.4177" Error="0.00166"/>
<QuasiParabolic ID="2" StartDistance="6510.917" EndDistance="6541.833" A="0.0" B="-90.130974" C="0.05386982" Error="0.0023"/>
<QuasiParabolic ID="3" StartDistance="6541.833" EndDistance="6543.0" A="2.31901128E12" B="-7.0899898E8" C="54191.188" Error="0.00316"/>
<QuasiParabolic ID="4" StartDistance="6543.0" EndDistance="6544.0" A="-2.46157305E12" B="7.5228307E8" C="-57476.402" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6544.0" EndDistance="6545.0" A="2.5545225E12" B="-7.8075341E8" C="59656.582" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6545.0" EndDistance="6546.0" A="-2.24954155E12" B="6.8725702E8" C="-52490.89" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6546.0" EndDistance="6548.0" A="9.8089586E11" B="-2.99738816E8" C="22898.344" Error="0.00999"/>
<QuasiParabolic ID="8" StartDistance="6548.0" EndDistance="6550.0" A="-4.62945681E11" B="1.41263472E8" C="-10776.236" Error="0.00913"/>
<QuasiParabolic ID="9" StartDistance="6550.0" EndDistance="6572.0" A="6.1012992E10" B="-1.872392E7" C="1436.5408" Error="0.00997"/>
<QuasiParabolic ID="10" StartDistance="6572.0" EndDistance="6574.0" A="7.0156073E12" B="-2.13515546E9" C="162455.38" Error="0.00702"/>
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<QuasiParabolic ID="13" StartDistance="6587.0" EndDistance="6594.0" A="1.00186781E13" B="-3.04602189E9" C="231524.22" Error="0.00565"/>
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<ProfileValley Model="ULCAR" Width="92.75" Depth="0.154"/>
<TopsideChapman PeakHeight="263.559" PeakDensity="143424.31" PeakScaleHeight="20.741" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
