<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 21:55:00.000"
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="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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 90% 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) 21:55:00</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">
FF202610504152155001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="5.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.660" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.299" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.750" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.325" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="227.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="227.500" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="90.000" 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="4.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="273.484" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.510" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="248.283" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="223.320" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.638" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.000" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="35.554" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.511" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.431" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.010" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="65">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
227.500 227.500 227.500 227.500 230.000 230.000 230.000 230.000 232.500 232.500 232.500 232.500 232.500 232.500 232.500 235.000 235.000 235.000 235.000 237.500 237.500 237.500 240.000 240.000 240.000 240.000 240.000 242.500 242.500 242.500 245.000 245.000 245.000 246.250 247.500 247.500 250.000 250.000 252.500 252.500 255.000 255.000 255.000 257.500 257.500 260.000 260.000 261.089 262.294 263.634 265.134 266.825 268.744 270.942 273.484 276.458 279.985 284.232 289.448 296.007 304.501 315.939 332.169 357.001 399.743
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
90 69 72 66 63 63 63 63 60 60 63 66 63 51 45 69 72 75 75 78 78 78 69 66 69 78 75 75 78 75 75 78 78 66 72 93 93 72 66 72 63 48 45 69 69 81 78 78 78 78 81 69 69 81 81 78 78 78 78 99 93 69 69 66 0
</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="31">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.025 2.05 2.075 2.1 2.125 2.15 2.175 2.2 2.225 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
90.000 90.000 90.000 90.000 90.000 90.000 90.000 90.000 95.000 95.000 95.000 95.000 92.500 92.500 92.500 92.500 93.333 94.167 95.000 95.000 97.500 97.500 97.500 97.500 97.500 97.500 98.000 98.500 99.000 99.500 100.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 60 57 60 60 60 84 75 54 54 36 42 45 42 51 0 0 66 57 54 57 54 57 54 48 0 0 0 51 0
</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 9.375 -3.125 -3.125 3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="479">
<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="0.51" PeakHeight="110.0" Num="3" Error="0.0">
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</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.51" EndFrequency="5.0" PeakHeight="248.283" Num="5" zHalfNm="223.32" Error="1.736">
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<ProfileValley Model="ULCAR" Width="82.25" Depth="0.288"/>
<TopsideChapman PeakHeight="248.283" PeakDensity="310173.7" PeakScaleHeight="19.431" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
