<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-25 -084 03:10:00.000"
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 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" >
2026.03.25 (084) 03:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.18" 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">
FF202608403250310009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="18" >
<URSI ID="00" Val="6.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.132" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.294" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="390.000" 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="4.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.667" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="78">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.95 3.0 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 260.000 260.000 260.000 275.000 280.000 285.000 290.000 295.000 290.000 290.000 290.000 275.000 275.000 285.000 295.000 305.000 300.000 295.000 290.000 305.000 305.185 305.370 305.556 305.741 305.926 306.111 306.296 250.000 255.000 260.000 265.000 270.000 272.500 275.000 280.000 280.000 282.500 285.000 287.500 290.000 295.000 300.000 300.000 300.000 302.500 305.000 307.500 310.000 312.500 315.000 320.000 320.000 317.500 315.000 330.000 335.000 345.000 350.000 355.000 360.000 361.429 362.857 364.286 365.714 367.143 368.571 370.000 381.667 393.333 405.000 400.000 395.000 390.000 390.000 390.000 390.000 390.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 63 57 0 54 54 57 57 0 60 60 0 0 54 54 0 54 54 48 0 0 0 0 0 0 0 60 0 63 60 69 63 72 63 66 66 63 0 57 0 54 0 51 0 0 57 0 0 57 63 60 0 60 51 54 57 0 0 57 0 0 0 0 0 0 48 0 0 54 0 0 51 51 51 57 51
</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 1.171875 0.390625 0.390625 1.171875 -1.171875 1.171875 -0.390625 1.171875 0.390625 1.171875 0.390625 -1.171875 0.390625 0.390625 1.171875 1.953125 2.734375 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 1.171875 -0.390625 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 1.171875 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 2.734375 0.390625 -2.734375 1.171875 2.734375 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 0.390625 1.171875 0.390625 1.171875 1.171875 1.171875
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
