<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-18 -077 07:15:00.000"
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 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" >
2026.03.18 (077) 07:15:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.18" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="82.25368" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202607703180715001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.619" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.914" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.375" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.375" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.325" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="272.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.375" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.375" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="243.854" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="216.791" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.015" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="38.449" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.592" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.606" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="32.890" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.550" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="104">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 215.000 215.000 215.000 215.000 215.000 215.625 216.250 216.875 217.500 217.500 217.500 217.500 217.500 220.000 220.000 220.000 220.000 220.000 222.500 222.500 222.500 222.500 222.500 222.500 222.500 225.000 225.000 225.000 225.000 225.000 225.000 226.250 227.500 227.500 227.500 227.500 227.500 227.500 227.500 230.000 230.000 230.000 230.000 230.000 232.500 232.500 232.500 232.500 232.500 235.000 235.000 235.000 235.833 236.667 237.500 238.750 240.000 240.000 240.000 241.250 242.500 242.500 242.500 242.500 242.500 242.500 242.500 247.500 247.500 247.500 247.500 250.000 250.000 250.000 250.000 252.500 252.500 255.000 257.500 257.500 260.000 260.000 260.000 262.500 262.500 265.000 265.000 267.500 270.000 272.500 272.500 277.500 279.298 281.367 283.775 286.611 290.000 294.122 299.245 305.782 314.412 326.332 343.869
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 57 0 0 57 0 0 0 72 0 72 69 69 69 72 60 60 48 45 54 0 0 0 81 81 78 0 105 105 0 84 0 81 84 87 99 99 96 96 96 99 99 96 96 96 87 87 99 96 84 81 93 0 0 75 0 93 0 105 0 99 102 0 93 93 0 99 96 102 105 105 102 105 96 93 93 93 105 99 81 72 54 57 69 69 78 78 93 93 66 66 90 87 87 87 99 96 96 96 60 60 96 93
</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="490">
<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="4.95" PeakHeight="243.854" Num="5" zHalfNm="216.791" Error="0.754">
-67.262 11.33 -7.009 2.579 0.008
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6504.5" A="-2.52482355E11" B="7.7926656E7" C="-6012.734" Error="0.00135"/>
<QuasiParabolic ID="2" StartDistance="6504.5" EndDistance="6529.0" A="0.0" B="-2401.152" C="0.40916133" Error="0.0349"/>
<QuasiParabolic ID="3" StartDistance="6529.0" EndDistance="6550.0" A="1.17829001E11" B="-3.6176348E7" C="2776.7803" Error="0.0349"/>
<QuasiParabolic ID="4" StartDistance="6550.0" EndDistance="6551.0" A="-2.87014073E12" B="8.761808E8" C="-66868.805" Error="1.32E-10"/>
<QuasiParabolic ID="5" StartDistance="6551.0" EndDistance="6559.0" A="5.874388E12" B="-1.7934967E9" C="136892.27" Error="0.0706"/>
<QuasiParabolic ID="6" StartDistance="6559.0" EndDistance="6570.0" A="8.9874634E12" B="-2.7427497E9" C="209254.89" Error="0.0795"/>
<QuasiParabolic ID="7" StartDistance="6570.0" EndDistance="6584.0" A="5.649972E13" B="-1.72061471E10" C="1309970.0" Error="0.022"/>
<QuasiParabolic ID="8" StartDistance="6584.0" EndDistance="6613.854" A="-3.16608484E13" B="9.5741E9" C="-723766.75" Error="0.011"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="73.5" Depth="0.154"/>
<TopsideChapman PeakHeight="243.854" PeakDensity="304001.25" PeakScaleHeight="20.606" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
