<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 22:10:00.000"
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="20.0">
<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" >
2026.04.16 (106) 22:10:00</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">
FF202610604162210001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.675" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.741" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.487" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.175" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.175" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="212.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="212.500" 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="4.325" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="250.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.401" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.175" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.175" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="238.397" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="212.916" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.389" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="36.156" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.227" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.912" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.280" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.580" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="61">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
212.500 212.500 212.500 212.500 215.000 215.000 215.000 215.000 215.000 215.000 215.000 217.500 217.500 222.500 222.500 221.250 220.000 220.000 222.500 222.500 222.500 222.500 222.500 222.500 225.000 225.000 227.500 227.500 227.500 230.000 230.000 230.000 232.500 232.500 235.000 235.000 237.500 237.500 240.000 240.000 242.500 245.000 245.000 245.000 250.000 250.000 250.000 255.000 257.500 262.500 265.000 265.000 270.000 275.000 282.500 287.500 296.756 309.014 326.021 351.194 392.278
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 72 72 84 81 78 81 72 69 84 84 72 69 54 57 57 60 54 54 57 57 42 42 42 39 63 66 81 81 66 66 72 69 78 81 75 81 75 78 81 75 69 66 90 93 84 81 69 69 45 45 54 51 33 36 0 0 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="472">
<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="0.401" PeakHeight="110.0" Num="3" Error="0.0">
-20.243 3.117 -0.219
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.401" EndFrequency="4.675" PeakHeight="238.397" Num="5" zHalfNm="212.916" Error="2.412">
-63.119 12.203 -9.232 4.677 -1.176
</ShiftedChebyshev>
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<QuasiParabolic ID="2" StartDistance="6503.917" EndDistance="6527.833" A="0.0" B="524.26324" C="-0.031228732" Error="0.00407"/>
<QuasiParabolic ID="3" StartDistance="6527.833" EndDistance="6529.0" A="-4.7986691E12" B="1.46993498E9" C="-112568.086" Error="0.00561"/>
<QuasiParabolic ID="4" StartDistance="6529.0" EndDistance="6530.0" A="5.5137309E12" B="-1.68901734E9" C="129348.93" Error="2.73E-10"/>
<QuasiParabolic ID="5" StartDistance="6530.0" EndDistance="6531.0" A="-5.3096963E12" B="1.625968E9" C="-124478.43" Error="2.56E-10"/>
<QuasiParabolic ID="6" StartDistance="6531.0" EndDistance="6532.0" A="4.9836757E12" B="-1.52618995E9" C="116844.336" Error="2.41E-10"/>
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<ProfileValley Model="ULCAR" Width="71.75" Depth="0.179"/>
<TopsideChapman PeakHeight="238.397" PeakDensity="271161.6" PeakScaleHeight="19.912" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
