<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 02:40:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.16 (106) 02:40:00</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">
FF202610604160240001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="3.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.267" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.802" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.600" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.525" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="282.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="282.500" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="107.500" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="342.836" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="291.339" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="262.186" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.734" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.225" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="41.643" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.058" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.139" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="40.480" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.340" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="35">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 2.775 2.8 2.825 2.85 2.875 2.9 2.925 2.95 2.975 3.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
282.500 283.750 285.000 286.250 287.500 287.500 287.500 287.500 287.500 290.000 292.500 292.500 292.500 295.000 297.500 297.500 297.500 300.000 305.000 307.500 310.000 310.000 312.500 314.967 317.693 320.721 324.105 327.911 332.224 337.152 342.836 349.466 357.298 366.692 378.167
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 0 0 63 57 57 57 57 78 78 75 72 69 72 69 66 63 66 63 63 63 63 0 63 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" >
-1.5625 -1.5625 -1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 -1.5625 -1.5625 7.8125 -7.8125 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 7.8125 -1.5625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
110.000 108.750 107.500 107.500 107.500 107.500 107.500 107.500 107.500 107.500 107.500 107.500 107.500 107.500 107.500 107.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 51 51 0 51 0 0 0 60 63 63 66 66 63 63
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.5625 1.5625 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 1.5625 -1.5625 1.5625 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="528">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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</AltitudeList>
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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="3.0" PeakHeight="291.339" Num="5" zHalfNm="262.186" Error="1.055">
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</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="7" 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="6517.293" A="-1.09363675E11" B="3.375422E7" C="-2604.367" Error="0.00179"/>
<QuasiParabolic ID="2" StartDistance="6517.293" EndDistance="6554.586" A="0.0" B="-2342.857" C="0.39951992" Error="0.0521"/>
<QuasiParabolic ID="3" StartDistance="6554.586" EndDistance="6590.0" A="5.5211241E10" B="-1.6894888E7" C="1292.5094" Error="0.0521"/>
<QuasiParabolic ID="4" StartDistance="6590.0" EndDistance="6608.0" A="3.1842456E12" B="-9.6652595E8" C="73343.42" Error="0.0377"/>
<QuasiParabolic ID="5" StartDistance="6608.0" EndDistance="6638.0" A="6.8211688E12" B="-2.0672896E9" C="156633.66" Error="0.0391"/>
<QuasiParabolic ID="6" StartDistance="6638.0" EndDistance="6661.339" A="-1.14639E13" B="3.44192051E9" C="-258341.5" Error="0.0139"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.879" Depth="0.154"/>
<TopsideChapman PeakHeight="291.339" PeakDensity="111662.53" PeakScaleHeight="22.139" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
