<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-06 -037 01:40:00.000"
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" >
2026.02.06 (037) 01:40:00</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">
FF202603702060140009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="17" >
<URSI ID="00" Val="9.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.553" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="35.173" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" 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="1.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="296.818" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.807" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="134">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 245.000 240.000 255.000 245.000 246.875 248.750 250.625 252.500 254.375 256.250 258.125 260.000 262.500 265.000 267.500 270.000 277.500 285.000 290.000 300.000 305.556 311.111 316.667 322.222 327.778 333.333 338.889 344.444 350.000 350.000 351.667 353.333 355.000 355.000 356.000 357.000 358.000 359.000 360.000 362.500 365.000 360.000 355.000 355.000 355.000 340.000 335.000 330.000 320.000 310.000 310.000 305.000 300.000 295.000 291.364 287.727 284.091 280.455 276.818 273.182 269.545 265.909 262.273 258.636 255.000 260.000 265.000 265.000 270.000 275.000 275.000 267.500 260.000 255.000 255.000 255.000 255.000 255.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 265.000 265.000 270.000 271.333 272.667 274.000 275.333 276.667 278.000 279.333 280.667 282.000 283.333 284.667 286.000 287.333 288.667 290.000 285.000 280.000 275.000 275.000 275.000 275.000 280.000 285.000 280.000 280.000 280.000 290.000 290.682 291.364 292.045 292.727 293.409 294.091 294.773 295.455 296.136 296.818 299.998 303.865 308.670 314.801 322.895 334.074 350.517
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 57 54 63 0 0 60 0 69 0 0 0 66 57 54 0 57 0 66 69 63 0 60 57 54 0 51 0 48 51 51 0 0 51 48 0 51 0 0 48 0 51 0 51 0 54 57 0 60 0 57 0 63 66 0 0 0 0 60 57 0 66 66 63 63 57 60 57 66 66 60 69 0 60 60 63 60 60 57 60 0 0 0 0 0 0 63 69 60 63 57 0 0 63 63 60 60 60 0 60 60 60 60 0 57 60 66 63 63 66 66 69 63 60 66 63 66 57 0 60 54 54 54 54 0 0 54 0 0 0 48 0 51 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 1.171875 1.171875 1.171875 1.171875 0.390625 0.390625 1.171875 0.390625 1.171875 1.953125 1.953125 1.171875 1.171875 0.390625 1.171875 0.390625 2.734375 -1.171875 -0.390625 -1.953125 -1.953125 0.390625 -0.390625 -0.390625 -1.171875 0.390625 -1.171875 -0.390625 -0.390625 -0.390625 0.390625 -1.171875 0.390625 -0.390625 0.390625 -1.171875 2.734375 0.390625 -0.390625 1.171875 -0.390625 1.953125 0.390625 1.171875 0.390625 -0.390625 2.734375 -0.390625 2.734375 -0.390625 -1.953125 -1.953125 -1.953125 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 0.390625 1.171875 1.171875 1.171875 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -2.734375 -0.390625 0.390625 -1.953125 0.390625 0.390625 0.390625 -0.390625 0.390625 1.171875 1.953125 0.390625 1.953125 1.171875 1.953125 1.171875 1.171875 1.171875 1.171875 1.953125 1.171875 1.953125 1.171875 0.390625 1.953125 1.953125 1.953125 0.390625 0.390625 1.953125 1.953125 1.171875 1.953125 1.953125 0.390625 1.171875 1.953125 1.953125 1.171875 0.390625 1.953125 1.953125 1.953125 1.171875 -0.390625 0.390625 -2.734375 -1.953125 -2.734375 -0.390625 -1.953125 -0.390625 -1.953125
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
