<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 22:30:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 65% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.15 (105) 22:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" 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">
FF202610504152230001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="3.975" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.736" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.852" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.300" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.325" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="205.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="205.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="92.500" Name="h`Es" 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="3.775" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="262.775" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="231.832" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="204.257" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.089" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.050" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="39.013" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.720" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="21.351" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="30.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.700" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="2.250" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="70">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.25 2.275 2.3 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 2.95 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 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95 3.975
</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" >
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</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="11">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.05 2.075 2.1 2.125 2.15 2.175 2.2 2.225 2.25 2.275 2.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
95.000 95.000 93.750 92.500 92.500 92.500 93.125 93.750 94.375 95.000 95.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 0 54 54 78 0 0 0 42 39
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 -3.125 -3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="476">
<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="3.975" PeakHeight="231.832" Num="5" zHalfNm="204.257" Error="0.859">
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</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="6502.167" A="-2.79250174E11" B="8.6188328E7" C="-6650.2085" Error="0.00132"/>
<QuasiParabolic ID="2" StartDistance="6502.167" EndDistance="6524.333" A="0.0" B="-5805.56" C="0.9408882" Error="0.0645"/>
<QuasiParabolic ID="3" StartDistance="6524.333" EndDistance="6543.0" A="1.96100407E11" B="-6.0164148E7" C="4614.6797" Error="0.0645"/>
<QuasiParabolic ID="4" StartDistance="6543.0" EndDistance="6544.0" A="-4.31887116E12" B="1.31992806E9" C="-100848.58" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6544.0" EndDistance="6552.0" A="6.1924442E12" B="-1.89257664E9" C="144605.62" Error="0.0526"/>
<QuasiParabolic ID="6" StartDistance="6552.0" EndDistance="6563.0" A="9.5420877E12" B="-2.91505638E9" C="222633.69" Error="0.0748"/>
<QuasiParabolic ID="7" StartDistance="6563.0" EndDistance="6569.0" A="8.4283625E13" B="-2.56916951E10" C="1957864.4" Error="0.0497"/>
<QuasiParabolic ID="8" StartDistance="6569.0" EndDistance="6601.832" A="-2.02576893E13" B="6.1369902E9" C="-464778.7" Error="0.0572"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="66.5" Depth="0.135"/>
<TopsideChapman PeakHeight="231.832" PeakDensity="196037.53" PeakScaleHeight="21.351" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
