<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-18 -138 00:15:00.000"
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" >
2026.05.18 (138) 00:15:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" 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">
FF202613805180015001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.275" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.416" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.188" 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="3.700" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.125" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="310.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" 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="285.596" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="256.884" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.841" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="41.103" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.252" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.253" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="37.600" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.100" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="13">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2 3.225 3.25 3.275
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 292.500 295.000 300.000 305.000 310.000 310.000 317.058 326.520 339.865 360.102 394.426 465.405
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 81 78 87 99 90 84 81 93 90 87 0 84
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625
</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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</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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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="3.275" PeakHeight="285.596" Num="5" zHalfNm="256.884" Error="2.844">
-71.421 7.307 -5.073 2.908 -1.237
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6516.027" A="-1.17145494E11" B="3.6156016E7" C="-2789.6907" Error="0.00175"/>
<QuasiParabolic ID="2" StartDistance="6516.027" EndDistance="6552.053" A="0.0" B="9.403659" C="0.038589153" Error="8.08E-4"/>
<QuasiParabolic ID="3" StartDistance="6552.053" EndDistance="6585.0" A="3.4909794E10" B="-1.0729194E7" C="824.3808" Error="6.09E-4"/>
<QuasiParabolic ID="4" StartDistance="6585.0" EndDistance="6586.0" A="-2.08868803E12" B="6.342512E8" C="-48149.07" Error="6.26E-11"/>
<QuasiParabolic ID="5" StartDistance="6586.0" EndDistance="6595.0" A="3.85971834E12" B="-1.172128E9" C="88988.734" Error="0.0199"/>
<QuasiParabolic ID="6" StartDistance="6595.0" EndDistance="6601.0" A="4.37780192E12" B="-1.32924198E9" C="100900.336" Error="0.00442"/>
<QuasiParabolic ID="7" StartDistance="6601.0" EndDistance="6609.0" A="4.9318157E12" B="-1.49709952E9" C="113614.89" Error="0.00397"/>
<QuasiParabolic ID="8" StartDistance="6609.0" EndDistance="6628.0" A="1.30024777E13" B="-3.93942426E9" C="298387.53" Error="0.0145"/>
<QuasiParabolic ID="9" StartDistance="6628.0" EndDistance="6655.596" A="-1.27280632E13" B="3.8247703E9" C="-287324.2" Error="0.00368"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="108.08" Depth="0.154"/>
<TopsideChapman PeakHeight="285.596" PeakDensity="133072.27" PeakScaleHeight="22.253" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
