<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-30 -089 02:50:00.000"
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" >
2026.03.30 (089) 02:50:00</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">
FF202608903300250009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="17" >
<URSI ID="00" Val="8.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.645" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.799" 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="6.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="285.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.872" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="109">
<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 8.15 8.2 8.25 8.3 8.35 8.4 8.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 273.000 271.000 269.000 267.000 265.000 265.000 262.500 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 269.167 278.333 287.500 296.667 305.833 315.000 310.000 310.000 305.000 300.000 298.750 297.500 296.250 295.000 300.000 299.804 299.608 299.412 299.216 299.020 298.824 298.627 298.431 298.235 298.039 297.843 297.647 297.451 297.255 297.059 296.863 296.667 296.471 296.275 296.078 295.882 295.686 295.490 295.294 295.098 294.902 294.706 294.510 294.314 294.118 293.922 293.725 293.529 293.333 293.137 292.941 292.745 292.549 292.353 292.157 291.961 291.765 291.569 291.373 291.176 290.980 290.784 290.588 290.392 290.196 290.000 286.667 283.333 280.000 280.000 280.000 285.000 285.000 280.000 275.000 275.000 275.000 280.000 280.000 285.000 285.000 285.000 285.000 285.000 290.000 295.000 300.000 305.000 305.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 0 0 0 63 63 0 69 60 57 0 0 60 66 63 0 60 57 0 0 0 0 57 0 60 63 0 57 60 63 0 63 0 63 0 0 0 0 0 0 0 57 0 0 0 0 57 57 60 0 0 0 0 57 0 57 60 0 0 0 0 0 0 0 0 0 0 0 0 0 48 0 0 0 51 57 0 0 0 60 60 0 57 60 0 60 0 0 69 69 66 60 66 72 72 72 75 72 66 66 69 66 63 72 72 66 66 63
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 0.390625 0.390625 1.171875 0.390625 -0.390625 -0.390625 0.390625 1.171875 0.390625 1.953125 1.171875 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125 0.390625 -1.953125 1.171875 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 1.171875 0.390625 1.171875 1.171875 1.171875 0.390625 1.953125 -0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 -0.390625 1.171875 0.390625 1.171875 0.390625 1.171875 1.171875 0.390625 -0.390625 -0.390625 1.171875 1.953125 -0.390625 -0.390625 1.171875 0.390625 -2.734375 1.171875 1.171875 1.171875 -0.390625 1.171875 1.171875 -0.390625 -1.953125 1.171875 1.171875 1.171875 1.953125 1.171875 1.171875 1.953125 1.171875 1.953125 1.171875 -1.953125 -0.390625 -0.390625 1.953125 0.390625 1.171875 1.953125 1.171875 1.953125 0.390625 1.171875 1.171875 1.953125 0.390625 0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 0.390625 1.171875 1.171875
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
