<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-22 -112 23:15:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 85% PACIFIC flags: Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.22 (112) 23:15:00</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">
FF202611204222315001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.278" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.128" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="320.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="290.341" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.972" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.477" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="42.232" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.609" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.120" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="42.490" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.020" 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" >
3.1 3.125 3.15 3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 292.500 292.500 295.000 295.000 297.500 297.500 302.500 305.000 305.000 307.500 310.000 317.500 317.500 320.000 325.000 328.849 333.377 338.783 345.348 353.491 363.856 377.500 396.269 423.717
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 72 75 75 75 102 102 90 87 90 93 93 87 90 90 90 84 72 72 72 72 69 0 84 84
</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="542">
<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="3.7" PeakHeight="290.341" Num="5" zHalfNm="260.972" Error="1.469">
-77.296 -1.153 0.026 0.227 0.102
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" 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="6514.082" A="-1.30821857E11" B="4.0377116E7" C="-3115.393" Error="0.00167"/>
<QuasiParabolic ID="2" StartDistance="6514.082" EndDistance="6548.165" A="0.0" B="256.45255" C="6.6179613E-4" Error="0.00435"/>
<QuasiParabolic ID="3" StartDistance="6548.165" EndDistance="6550.0" A="-7.4705391E11" B="2.2803776E8" C="-17402.05" Error="0.0152"/>
<QuasiParabolic ID="4" StartDistance="6550.0" EndDistance="6578.0" A="5.2585759E10" B="-1.6127027E7" C="1236.4818" Error="0.0188"/>
<QuasiParabolic ID="5" StartDistance="6578.0" EndDistance="6581.0" A="-2.1884017E11" B="6.639834E7" C="-5036.349" Error="0.00162"/>
<QuasiParabolic ID="6" StartDistance="6581.0" EndDistance="6584.0" A="5.8970231E12" B="-1.79224422E9" C="136176.42" Error="0.0142"/>
<QuasiParabolic ID="7" StartDistance="6584.0" EndDistance="6591.0" A="1.51477145E12" B="-4.61062048E8" C="35084.22" Error="0.0143"/>
<QuasiParabolic ID="8" StartDistance="6591.0" EndDistance="6601.0" A="3.7888152E12" B="-1.1511072E9" C="87431.75" Error="0.00413"/>
<QuasiParabolic ID="9" StartDistance="6601.0" EndDistance="6634.0" A="8.0643479E12" B="-2.44652698E9" C="185554.75" Error="0.0189"/>
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<ProfileValley Model="ULCAR" Width="102.247" Depth="0.154"/>
<TopsideChapman PeakHeight="290.341" PeakDensity="169851.11" PeakScaleHeight="22.12" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
