<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-16 -136 20:55:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 70% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.16 (136) 20:55:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202613605162055001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.933" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.061" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.575" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="192.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="192.500" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="241.230" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.979" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="214.696" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="188.060" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.908" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="38.180" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.862" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.927" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="5.900" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="86">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
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</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
42 45 69 72 72 72 75 75 72 72 69 66 69 66 69 69 84 84 69 66 51 45 48 51 51 45 72 75 51 54 48 48 0 42 0 0 0 72 81 0 0 0 75 72 84 90 81 81 81 81 72 72 72 75 75 75 78 75 48 45 48 45 60 60 84 84 78 78 72 69 63 60 75 75 72 75 87 84 78 81 84 87 0 0 0 90
</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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</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.979" PeakHeight="110.0" Num="3" Error="0.0">
-26.411 7.899 -1.195
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.979" EndFrequency="5.1" PeakHeight="214.696" Num="5" zHalfNm="188.06" Error="0.59">
-55.317 13.655 -7.516 2.524 -0.292
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6459.993" EndDistance="6480.001" A="-4.19721773E12" B="1.29543757E9" C="-99955.64" Error="0.0171"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6499.25" A="-2.21811782E12" B="6.8460429E8" C="-52823.445" Error="0.00125"/>
<QuasiParabolic ID="2" StartDistance="6499.25" EndDistance="6518.5" A="0.0" B="-8539.14" C="1.8088919" Error="0.00664"/>
<QuasiParabolic ID="3" StartDistance="6518.5" EndDistance="6537.0" A="4.98337153E11" B="-1.53690256E8" C="11849.942" Error="0.00681"/>
<QuasiParabolic ID="4" StartDistance="6537.0" EndDistance="6539.0" A="7.1498061E13" B="-2.18761093E10" C="1673347.5" Error="0.00614"/>
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<QuasiParabolic ID="6" StartDistance="6545.0" EndDistance="6548.0" A="4.8982093E13" B="-1.49791529E10" C="1145190.9" Error="0.0077"/>
<QuasiParabolic ID="7" StartDistance="6548.0" EndDistance="6558.0" A="9.2611826E13" B="-2.8305279E10" C="2162763.0" Error="0.0166"/>
<QuasiParabolic ID="8" StartDistance="6558.0" EndDistance="6566.0" A="-9.9744114E13" B="3.03577108E10" C="-2309865.0" Error="0.0142"/>
<QuasiParabolic ID="9" StartDistance="6566.0" EndDistance="6584.696" A="-2.8087205E13" B="8.5310561E9" C="-647768.2" Error="0.00767"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="57.75" Depth="0.275"/>
<TopsideChapman PeakHeight="214.696" PeakDensity="322704.72" PeakScaleHeight="20.927" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
