<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-03 -034 00:40:00.000"
URSICode="SAA0K"
StationName="SaoLuis"
GeoLatitude="-2.6"
GeoLongitude="315.8"
Source="Ionosonde"
SourceType="DPS-4"
ScalerType="auto">
<SystemInfo UMLStationID="903">
<FrequencyStepping StartFrequency="1.0" StopFrequency="18.0">
<LinearStepping Step="0.05" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="5.0" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 8 0 0 0 0 0 0 0 55 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44: Problems inverting F-trace to N(h)-profile</Comments>
<ContactPerson>
<Name>Dr. Mangalathayil Ali Abdu</Name>
<Affiliation>INPE, Division of Aeronomy</Affiliation>
<Address>Av dos Astronautas, 1.758 Jd. Granja - CEP: 12227-010 Sao Jose dos Campos - SP Brasil</Address>
<Email>maabdu@dae.inpe.br</Email>
</ContactPerson>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.02.03 (034) 00:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-19.74" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="-1.0" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202603402030040009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="16" >
<URSI ID="00" Val="9.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.025" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.437" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" Name="h`F2" 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="9.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="395.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.442" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="123">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 280.000 280.000 280.000 280.000 290.000 290.000 291.250 292.500 293.750 295.000 297.500 300.000 300.000 300.000 302.500 305.000 305.000 305.000 305.000 305.000 310.000 300.000 335.000 345.000 350.000 370.000 370.000 368.553 367.105 365.658 364.211 362.763 361.316 359.868 358.421 356.974 355.526 354.079 352.632 351.184 349.737 348.289 346.842 345.395 343.947 342.500 341.053 339.605 338.158 336.711 335.263 333.816 332.368 330.921 329.474 328.026 326.579 325.132 323.684 322.237 320.789 319.342 317.895 316.447 315.000 317.500 320.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 325.000 320.000 315.000 315.000 315.000 320.000 322.500 325.000 322.500 320.000 320.000 320.000 317.500 315.000 320.000 320.000 325.000 330.000 332.500 335.000 345.000 345.000 345.000 350.000 355.000 365.000 370.000 375.000 385.000 390.000 397.500 405.000 408.333 411.667 415.000 418.333 421.667 425.000 415.000 425.000 430.000 412.500 395.000 405.000 415.000 425.000 430.000 430.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 63 0 0 57 60 60 63 60 0 54 0 54 0 54 0 57 0 0 0 66 63 66 51 51 57 60 57 0 0 0 51 0 54 0 51 0 0 51 0 0 0 0 0 0 0 57 0 51 0 48 0 0 0 60 0 0 0 0 57 0 0 0 0 0 66 60 63 57 57 0 57 57 0 51 0 63 60 66 69 63 0 63 0 69 66 72 60 63 69 66 72 63 57 66 60 57 51 54 54 51 51 48 51 48 0 48 45 0 45 0 45 48 51 45 45 0 51 51 0 45 45 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 2.734375 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 0.390625 1.171875 1.171875 0.390625 -1.171875 -1.171875 -1.171875 1.953125 -1.953125 -1.171875 -1.171875 1.171875 -1.171875 0.390625 -1.953125 -0.390625 -1.171875 -0.390625 1.953125 0.390625 -1.171875 -1.171875 2.734375 1.171875 1.171875 -1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 2.734375 -0.390625 0.390625 -0.390625 1.171875 1.171875 1.171875 1.171875 1.953125 1.953125 1.953125 1.953125 1.171875 1.171875 1.171875 1.171875 0.390625 0.390625 1.953125 1.171875 0.390625 1.953125 1.953125 1.953125 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125 1.171875 1.953125 1.171875 1.953125 1.171875 1.171875 1.171875 1.171875 1.953125 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125 1.171875 -1.171875 -0.390625 1.953125 -1.171875 -1.171875 -1.171875 -1.953125 1.171875 0.390625 -1.171875 1.171875 1.171875 -0.390625 0.390625 0.390625 -0.390625 1.171875 2.734375 0.390625 0.390625 1.171875 1.171875 0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
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