<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-13 -103 03:15:00.000"
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 F2x cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.13 (103) 03:15:00</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">
FF202610304130315001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.297" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.879" 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="3.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="277.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="277.500" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="331.236" 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="290.500" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="261.995" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.592" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.760" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.250" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="21.751" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="38.910" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.500" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="36">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
277.500 278.750 280.000 281.250 282.500 283.750 285.000 285.000 287.500 287.500 290.000 290.000 290.000 295.000 295.000 297.500 297.500 300.000 302.500 305.625 308.750 311.875 315.000 317.500 320.000 322.500 324.063 325.953 328.285 331.236 335.086 340.325 347.866 359.654 380.687 428.852
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 0 0 0 0 0 66 69 66 69 66 69 69 69 57 60 45 45 54 0 0 0 66 69 78 78 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" >
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</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="528">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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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="3.3" PeakHeight="290.5" Num="5" zHalfNm="261.995" Error="1.26">
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</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="6517.353" A="-1.09011886E11" B="3.3645644E7" C="-2595.9893" Error="0.00179"/>
<QuasiParabolic ID="2" StartDistance="6517.353" EndDistance="6554.707" A="0.0" B="-338.55893" C="0.09198623" Error="0.00837"/>
<QuasiParabolic ID="3" StartDistance="6554.707" EndDistance="6560.0" A="1.76462397E11" B="-5.3887076E7" C="4113.969" Error="0.019"/>
<QuasiParabolic ID="4" StartDistance="6560.0" EndDistance="6590.0" A="2.11175076E10" B="-6525828.5" C="504.11798" Error="0.0156"/>
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<QuasiParabolic ID="6" StartDistance="6591.0" EndDistance="6594.0" A="6.7383722E12" B="-2.04479603E9" C="155126.27" Error="0.0144"/>
<QuasiParabolic ID="7" StartDistance="6594.0" EndDistance="6597.0" A="8.2792769E11" B="-2.5212248E8" C="19194.084" Error="0.0109"/>
<QuasiParabolic ID="8" StartDistance="6597.0" EndDistance="6609.0" A="4.01272052E12" B="-1.21765005E9" C="92373.375" Error="0.00878"/>
<QuasiParabolic ID="9" StartDistance="6609.0" EndDistance="6632.0" A="1.03569739E13" B="-3.13753318E9" C="237621.0" Error="0.0191"/>
<QuasiParabolic ID="10" StartDistance="6632.0" EndDistance="6643.0" A="-5.6346736E12" B="1.68503859E9" C="-125962.51" Error="0.00355"/>
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<ProfileValley Model="ULCAR" Width="112.06" Depth="0.154"/>
<TopsideChapman PeakHeight="290.5" PeakDensity="135111.66" PeakScaleHeight="21.751" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
