<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-01 -032 03:00:00.000"
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 2 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" >
2026.02.01 (032) 03:00:00</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">
FF202603202010300009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="18" >
<URSI ID="00" Val="8.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.828" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.904" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="86" Val="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="426.905" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.063" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="102">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.05 3.1 3.15 3.2 3.25 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
285.000 285.000 285.000 285.000 285.000 280.000 275.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 265.000 260.000 255.000 255.000 252.500 250.000 248.333 246.667 245.000 245.000 250.000 252.000 254.000 256.000 258.000 260.000 263.889 267.778 271.667 275.556 279.444 283.333 287.222 291.111 295.000 295.000 300.000 300.000 300.000 303.333 306.667 310.000 313.333 316.667 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 315.000 315.000 315.000 315.000 317.143 319.286 321.429 323.571 325.714 327.857 330.000 332.500 335.000 340.000 345.000 350.000 354.048 358.095 362.143 366.190 370.238 374.286 378.333 382.381 386.429 390.476 394.524 398.571 402.619 406.667 410.714 414.762 418.810 422.857 426.905 430.952 435.000 440.000 445.833 451.667 457.500 463.333 469.167
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 63 0 69 63 0 0 60 0 63 0 0 57 54 60 66 60 63 60 54 54 0 66 66 60 69 0 0 0 63 0 60 0 0 0 63 63 0 0 57 54 57 0 63 54 0 60 57 63 57 66 57 57 66 63 0 0 66 66 69 66 63 60 0 0 0 60 60 0 66 60 60 60 63 0 0 54 54 0 0 51 54 0 0 0 0 51 0 0 0 54 51 51 54 51 54 54 0 0 0 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 0.390625 1.171875 1.171875 1.171875 1.953125 -1.171875 0.390625 -0.390625 1.171875 -1.171875 -1.171875 -1.171875 1.953125 -0.390625 -0.390625 -1.171875 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 -0.390625 -0.390625 0.390625 -0.390625 1.953125 0.390625 -0.390625 -1.171875 -1.171875 -1.171875 1.953125 -1.171875 -1.171875 -1.171875 1.953125 -1.171875 -1.171875 0.390625 -0.390625 -0.390625 -0.390625 -1.953125 -1.171875 -1.953125 -0.390625 -1.171875 -1.171875 -1.171875 0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 0.390625 -0.390625 0.390625 -1.171875 -1.171875 1.953125 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -2.734375 -0.390625 -0.390625 -0.390625 0.390625 -1.953125 -0.390625 -0.390625 0.390625 1.171875 0.390625 0.390625 -0.390625 2.734375 -2.734375 0.390625 -0.390625 0.390625 -0.390625 -0.390625 -2.734375 -0.390625 -2.734375 0.390625 0.390625 -1.953125 -0.390625
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
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