<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-21 -141 00:55:00.000"
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="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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.21 (141) 00:55:00</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">
FF202614105210055001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.322" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.630" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.525" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="297.759" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="297.759" 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="2.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="297.759" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="297.218" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.241" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.625" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="42.970" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.237" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.646" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="43.410" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.040" 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" >
2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
297.759 302.500 310.000 317.500 325.000 332.500 342.500 352.500 365.000 377.500 392.500 410.000 430.384
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 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" >
-10.9375 -4.6875 10.9375 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 4.6875 -1.5625 7.8125 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="546">
<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="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="3.2" PeakHeight="297.218" Num="5" zHalfNm="267.241" Error="2.201">
-76.529 -0.778 -0.307 0.475 -0.057
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6516.674" A="-1.13062322E11" B="3.489578E7" C="-2692.4502" Error="0.00174"/>
<QuasiParabolic ID="2" StartDistance="6516.674" EndDistance="6553.348" A="0.0" B="-218.24431" C="0.073529035" Error="0.00566"/>
<QuasiParabolic ID="3" StartDistance="6553.348" EndDistance="6589.0" A="3.5443823E10" B="-1.088679E7" C="835.99225" Error="0.00566"/>
<QuasiParabolic ID="4" StartDistance="6589.0" EndDistance="6593.0" A="4.5824187E12" B="-1.39105818E9" C="105568.984" Error="0.0365"/>
<QuasiParabolic ID="5" StartDistance="6593.0" EndDistance="6606.0" A="1.88771205E12" B="-5.736135E8" C="43575.605" Error="0.037"/>
<QuasiParabolic ID="6" StartDistance="6606.0" EndDistance="6647.0" A="5.5247655E12" B="-1.67474982E9" C="126919.266" Error="0.0374"/>
<QuasiParabolic ID="7" StartDistance="6647.0" EndDistance="6667.218" A="-1.36080387E13" B="4.08207386E9" C="-306120.0" Error="0.0117"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="110.022" Depth="0.154"/>
<TopsideChapman PeakHeight="297.218" PeakDensity="127047.15" PeakScaleHeight="22.646" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
