<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-23 -113 01:20:00.000"
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" >
2026.04.23 (113) 01:20:00</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">
FF202611304230120001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.925" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.403" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.953" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.325" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.325" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="286.057" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.325" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.325" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="274.622" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="244.220" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.129" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="43.353" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.053" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.575" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="38.230" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.330" 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" >
2.325 2.35 2.375 2.4 2.425 2.45 2.475 2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725 2.75 2.775 2.8 2.825 2.85 2.875 2.9 2.925
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 252.500 255.000 257.500 262.500 265.000 267.500 270.000 272.500 277.500 280.000 280.000 282.500 286.057 290.113 294.781 300.213 306.610 314.256 323.557 335.114 349.861 369.332 396.230 435.803
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 69 66 69 69 69 69 72 63 72 75 75 75 72 72 72 66 57 57 42 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="530">
<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="2.925" PeakHeight="274.622" Num="5" zHalfNm="244.22" Error="3.314">
-72.301 10.076 -7.049 3.329 -0.677
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" EarthRadius="6370.0">
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<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6512.667" A="-1.42344143E11" B="4.3933376E7" C="-3389.796" Error="0.00162"/>
<QuasiParabolic ID="2" StartDistance="6512.667" EndDistance="6545.333" A="0.0" B="245.91232" C="0.0022684536" Error="0.00402"/>
<QuasiParabolic ID="3" StartDistance="6545.333" EndDistance="6574.0" A="3.9054819E10" B="-1.2016471E7" C="924.3094" Error="0.00402"/>
<QuasiParabolic ID="4" StartDistance="6574.0" EndDistance="6576.0" A="-2.5807487E11" B="7.8378936E7" C="-5950.9116" Error="0.0014"/>
<QuasiParabolic ID="5" StartDistance="6576.0" EndDistance="6582.0" A="3.98380053E12" B="-1.21172915E9" C="92141.25" Error="0.0112"/>
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<QuasiParabolic ID="7" StartDistance="6583.0" EndDistance="6592.0" A="2.88032503E12" B="-8.7621613E8" C="66637.98" Error="0.00299"/>
<QuasiParabolic ID="8" StartDistance="6592.0" EndDistance="6601.0" A="6.6847417E12" B="-2.03046886E9" C="154187.48" Error="0.00997"/>
<QuasiParabolic ID="9" StartDistance="6601.0" EndDistance="6612.0" A="1.60155619E13" B="-4.8575616E9" C="368328.75" Error="0.00294"/>
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</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="98.0" Depth="0.154"/>
<TopsideChapman PeakHeight="274.622" PeakDensity="106149.195" PeakScaleHeight="23.575" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
