<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-09 -040 02:20:00.000"
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" >
2026.02.09 (040) 02:20:00</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">
FF202604002090220009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="17" >
<URSI ID="00" Val="8.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.073" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.349" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="8.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="380.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.410" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="137">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
270.000 270.000 265.000 265.000 265.000 265.000 275.000 276.667 278.333 280.000 282.500 285.000 284.211 283.421 282.632 281.842 281.053 280.263 279.474 278.684 277.895 277.105 276.316 275.526 274.737 273.947 273.158 272.368 271.579 270.789 270.000 267.500 265.000 260.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.909 256.818 257.727 258.636 259.545 260.455 261.364 262.273 263.182 264.091 265.000 263.333 261.667 260.000 265.000 265.000 265.000 270.000 270.000 270.000 275.000 275.000 270.000 265.000 266.364 267.727 269.091 270.455 271.818 273.182 274.545 275.909 277.273 278.636 280.000 285.000 285.000 285.000 285.000 286.000 287.000 288.000 289.000 285.000 285.000 285.000 285.000 285.000 287.500 290.000 292.500 295.000 297.500 300.000 302.500 305.000 310.000 310.000 310.000 315.000 315.000 315.000 320.000 320.000 325.000 330.000 325.000 325.000 330.000 335.000 340.000 335.000 335.000 340.000 345.000 348.333 351.667 355.000 355.000 360.000 365.000 365.000 367.500 370.000 372.500 375.000 377.500 380.000 390.000 392.500 402.329 415.904 435.873 468.143
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 57 57 0 0 54 60 0 0 0 0 60 0 63 0 0 57 57 0 0 60 60 0 63 66 63 0 0 0 0 69 0 69 66 0 0 66 0 63 60 60 66 72 0 0 69 63 0 0 0 63 69 0 69 0 0 63 66 69 0 66 0 66 0 57 69 66 72 66 57 66 0 75 66 66 66 0 66 69 0 0 63 63 66 63 0 66 60 66 60 63 63 63 66 66 69 66 0 63 63 60 66 63 0 63 63 66 69 57 66 69 66 0 57 66 60 66 60 60 60 63 63 63 60 57 60 0 54 0 0 57 51 0 51 51 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 1.171875 0.390625 0.390625 0.390625 -0.390625 1.171875 1.171875 1.171875 0.390625 1.953125 1.171875 2.734375 1.171875 -1.171875 -0.390625 -0.390625 1.171875 -0.390625 -0.390625 -1.171875 0.390625 1.171875 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 0.390625 1.171875 1.171875 0.390625 0.390625 1.171875 0.390625 -0.390625 0.390625 -0.390625 1.171875 0.390625 -0.390625 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 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 1.171875 1.953125 1.953125 1.953125 1.171875 0.390625 -0.390625 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 0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 -1.171875 0.390625 0.390625 1.171875 0.390625 1.953125 0.390625 0.390625 0.390625 1.953125 1.953125 1.171875 -1.171875 0.390625 0.390625 0.390625 1.171875 1.953125 -0.390625 1.171875 -1.171875 1.953125 -1.171875 1.171875 -1.171875 2.734375 -1.953125 1.171875 1.171875 -1.953125 1.953125 2.734375 0.390625 2.734375
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
