<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-12 -071 02:10:00.000"
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" >
2026.03.12 (071) 02:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607103120210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="17" >
<URSI ID="00" Val="8.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.134" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.074" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" 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="7.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="346.931" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.314" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="57">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 275.000 278.750 282.500 286.250 290.000 293.750 297.500 301.250 305.000 305.000 305.000 305.625 306.250 306.875 307.500 308.125 308.750 309.375 310.000 310.625 311.250 311.875 312.500 313.125 313.750 314.375 315.000 320.000 320.000 321.579 323.158 324.737 326.316 327.895 329.474 331.053 332.632 334.211 335.789 337.368 338.947 340.526 342.105 343.684 346.931 350.667 355.014 360.133 366.252 373.694 382.941 394.739 410.314 431.824 463.461 514.580
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 57 0 0 0 54 0 54 54 57 57 0 0 0 0 54 0 0 57 0 60 57 0 0 0 60 0 60 54 0 0 0 0 0 0 0 0 51 0 0 0 0 0 0 0 0 57 48 51 0 0 54 0 0 48 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 0.390625 1.171875 0.390625 1.171875 1.171875 1.953125 1.171875 0.390625 1.953125 1.953125 2.734375 1.171875 1.171875 0.390625 0.390625 1.171875 2.734375 1.171875 1.171875 0.390625 1.171875 1.171875 0.390625 1.171875 1.171875 -0.390625 1.171875 1.953125 2.734375 1.953125 0.390625 1.953125 1.953125 0.390625 -1.953125 0.390625 1.171875 2.734375 1.171875 1.171875 1.171875 1.171875 2.734375 1.953125 0.390625 2.734375 -1.171875 0.390625 2.734375
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
