<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-25 -298 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="14.0">
<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" >
2026.10.25 (298) 01:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629810250140009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="18" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.548" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="41.162" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.250" 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="0.450" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="280.000" 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="10.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.695" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="156">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 331.667 333.333 335.000 335.000 340.000 345.000 350.000 355.000 352.500 350.000 347.500 345.000 342.500 340.000 337.500 335.000 332.500 330.000 327.500 325.000 322.500 320.000 317.500 315.000 312.500 310.000 310.000 310.000 308.750 307.500 306.250 305.000 303.750 302.500 301.250 300.000 298.750 297.500 296.250 295.000 295.000 294.000 293.000 292.000 291.000 290.000 290.000 292.000 294.000 296.000 298.000 300.000 302.500 305.000 305.000 305.000 305.000 306.250 307.500 308.750 310.000 311.250 312.500 313.750 315.000 310.000 305.000 300.000 299.554 299.107 298.661 298.214 297.768 297.321 296.875 296.429 295.982 295.536 295.089 294.643 294.196 293.750 293.304 292.857 292.411 291.964 291.518 291.071 290.625 290.179 289.732 289.286 288.839 288.393 287.946 287.500 287.054 286.607 286.161 285.714 285.268 284.821 284.375 283.929 283.482 283.036 282.589 282.143 281.696 281.250 280.804 280.357 279.911 279.464 279.018 278.571 278.125 277.679 277.232 276.786 276.339 275.893 275.446 275.000 275.000 275.000 280.000 275.000 280.000 280.000 280.000 282.722 285.719 289.037 292.729 296.862 301.522 306.814 312.877 319.894 328.107 337.852 349.600 364.042 382.224 405.812
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 57 57 0 0 0 63 0 66 0 0 60 0 60 60 0 0 57 57 0 0 54 0 0 0 0 0 0 0 0 0 0 0 63 0 63 63 0 66 0 0 66 0 0 66 66 60 0 63 66 63 66 0 63 0 60 69 66 66 0 69 66 66 0 66 63 63 0 0 0 0 69 0 63 0 63 69 66 60 72 66 72 72 0 66 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 48 0 0 0 0 0 0 0 0 0 0 0 0 0 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 1.953125 1.171875 1.171875 1.953125 1.171875 1.953125 -1.171875 1.953125 1.953125 -0.390625 1.171875 1.953125 1.953125 2.734375 2.734375 1.953125 -1.171875 1.953125 2.734375 -1.171875 1.171875 1.953125 2.734375 -1.171875 -0.390625 2.734375 2.734375 1.171875 1.953125 -0.390625 1.953125 1.953125 2.734375 1.171875 1.953125 1.953125 -1.171875 2.734375 1.171875 1.171875 2.734375 1.171875 2.734375 1.953125 1.953125 1.953125 1.953125 2.734375 2.734375 2.734375 2.734375 -1.171875 2.734375 -1.953125 -1.953125 2.734375 2.734375 2.734375 -1.953125 2.734375 2.734375 2.734375 -2.734375 2.734375 2.734375 2.734375 -1.953125 -2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 -1.171875 2.734375 2.734375 2.734375 1.953125 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 -1.953125 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 -0.390625 2.734375 2.734375 1.171875 2.734375 2.734375 2.734375 2.734375 -0.390625 -0.390625 2.734375 -0.390625 1.171875 -0.390625 -0.390625 -0.390625 1.953125 -0.390625 1.953125 1.953125 0.390625 1.171875 -0.390625 -0.390625 1.953125 0.390625 0.390625 0.390625 1.171875 0.390625 1.953125 1.953125 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 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 2.734375 2.734375 0.390625 0.390625 -1.953125 -1.953125 1.953125 -1.171875 -1.171875 -1.953125
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
