<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 04:25:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 75%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.16 (106) 04:25:00</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">
FF202610604160425001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="2.925" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.435" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.047" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.850" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="267.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="267.500" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="101.250" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="286.006" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="274.990" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="252.699" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.402" 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="31.886" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.779" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.979" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="31.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.240" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="2.450" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="20">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
267.500 269.500 271.500 273.500 275.500 277.500 280.000 282.500 282.500 286.006 289.922 294.324 299.309 305.000 311.559 319.202 328.221 339.023 352.197 368.619
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 0 0 0 66 63 63 69 66 0 63 69 54 0 0 39 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
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="35">
<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 2.775 2.8 2.825 2.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
95.000 95.000 95.000 95.000 95.000 95.000 95.000 95.000 95.000 93.750 92.500 92.500 97.500 97.500 97.500 98.333 99.167 100.000 100.000 100.000 100.000 100.000 95.000 102.500 102.500 102.500 101.250 100.000 100.000 100.000 102.500 105.000 107.500 108.750 110.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 84 84 75 72 84 87 75 75 72 75 63 60 51 48 69 66 81 81 0 63 69 72 69 0 66 0 66 69 66 0 0 51 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 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="435">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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<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="2.925" PeakHeight="274.99" Num="5" zHalfNm="252.699" Error="1.663">
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</ShiftedChebyshev>
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<QuasiParabolicList Num="11" 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="6516.75" A="-1.12596525E11" B="3.4752012E7" C="-2681.3572" Error="0.00175"/>
<QuasiParabolic ID="2" StartDistance="6516.75" EndDistance="6553.5" A="0.0" B="134.83163" C="0.019349856" Error="0.0019"/>
<QuasiParabolic ID="3" StartDistance="6553.5" EndDistance="6587.0" A="3.23849503E10" B="-9956029.0" C="765.1887" Error="0.0019"/>
<QuasiParabolic ID="4" StartDistance="6587.0" EndDistance="6589.0" A="-3.7803629E11" B="1.14659496E8" C="-8694.013" Error="0.0016"/>
<QuasiParabolic ID="5" StartDistance="6589.0" EndDistance="6593.0" A="6.9883102E12" B="-2.12129344E9" C="160979.14" Error="0.0156"/>
<QuasiParabolic ID="6" StartDistance="6593.0" EndDistance="6596.0" A="1.9712019E12" B="-5.9934323E8" C="45557.477" Error="0.0107"/>
<QuasiParabolic ID="7" StartDistance="6596.0" EndDistance="6603.0" A="5.22164E12" B="-1.58492186E9" C="120267.805" Error="0.00664"/>
<QuasiParabolic ID="8" StartDistance="6603.0" EndDistance="6627.0" A="9.9392495E12" B="-3.01385088E9" C="228470.81" Error="0.0182"/>
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</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="110.25" Depth="0.154"/>
<TopsideChapman PeakHeight="274.99" PeakDensity="106149.195" PeakScaleHeight="16.979" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
