<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-12 -102 17:35:00.000"
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 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" >
2026.04.12 (102) 17:35:00</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">
FF202610204121735001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="6.225" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.813" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.736" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.525" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="3.875" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="272.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="272.500" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="115.833" 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="88" Val="6.225" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="277.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.966" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.131" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="197.794" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="146.916" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.613" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="3.525" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="50.339" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.791" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="31.100" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="90.260" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="50">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.0 5.025 5.05 5.075 5.1 5.125 5.15 5.175 5.2 5.225 5.25 5.275 5.3 5.325 5.35 5.375 5.4 5.425 5.45 5.475 5.5 5.525 5.55 5.575 5.6 5.625 5.65 5.675 5.7 5.725 5.75 5.775 5.8 5.825 5.85 5.875 5.9 5.925 5.95 5.975 6.0 6.025 6.05 6.075 6.1 6.125 6.15 6.175 6.2 6.225
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
272.500 272.917 273.333 273.750 274.167 274.583 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 277.500 276.250 275.000 275.000 275.000 277.500 277.500 276.250 275.000 275.000 277.500 277.500 276.250 275.000 277.500 277.500 277.500 277.500 277.500 277.500 277.500 277.500 277.500 277.500 277.500 277.500 277.500 277.500 277.500 277.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 0 0 0 90 93 93 93 96 93 84 93 93 90 90 102 0 102 99 0 90 105 105 105 105 105 105 93 93 90 90 90 90 90 93 90 90 90 90 90 90 99 99 99 96 93 90 75
</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 3.125 -3.125 3.125 -3.125 -3.125 -3.125 3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="15">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
125.000 123.125 121.250 119.375 117.500 115.625 113.750 111.875 110.000 100.000 99.500 99.000 98.500 98.000 97.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 0 0 0 0 0 0 57 57 0 0 0 0 93
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-9.375 -3.125 -3.125 -3.125 -9.375 -3.125 -3.125 3.125 9.375 9.375 9.375 -9.375 -3.125 -3.125 -3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="643">
<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="2.966" PeakHeight="110.0" Num="3" Error="0.0">
-30.166 12.66 -2.943
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.966" EndFrequency="6.225" PeakHeight="197.794" Num="5" zHalfNm="146.916" Error="2.345">
-58.274 -32.334 17.496 -4.627 0.005
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.06" Depth="0.122"/>
<TopsideChapman PeakHeight="197.794" PeakDensity="480777.0" PeakScaleHeight="31.1" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
