<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-22 -053 02:00:00.000"
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" >
2026.02.22 (053) 02:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.15" 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">
FF202605302220200009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="18" >
<URSI ID="00" Val="8.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.487" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.074" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.700" 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="0.800" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.400" 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="5.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.603" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="88">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
270.000 270.000 270.000 270.000 265.000 260.000 260.000 265.000 262.500 260.000 265.000 265.000 265.000 270.000 275.000 273.889 272.778 271.667 270.556 269.444 268.333 267.222 266.111 265.000 265.000 263.333 261.667 260.000 255.000 255.000 255.000 255.000 250.000 250.000 247.500 245.000 240.000 240.000 241.364 242.727 244.091 245.455 246.818 248.182 249.545 250.909 252.273 253.636 255.000 262.500 270.000 270.000 270.000 285.000 292.500 300.000 310.000 320.000 325.000 330.000 335.000 342.500 350.000 365.000 380.000 381.000 382.000 383.000 384.000 385.000 390.000 395.000 400.000 405.000 280.000 290.000 300.000 300.000 307.500 312.229 317.672 324.004 331.461 340.375 351.216 364.687 381.877 404.570
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 63 60 57 63 60 57 0 66 63 66 60 0 57 63 0 57 0 57 60 63 0 60 60 0 60 57 66 60 60 0 66 60 63 0 0 0 57 78 66 0 0 0 75 0 0 0 72 0 60 60 60 57 0 57 0 57 54 57 57 0 57 51 54 48 0 0 0 48 0 0 0 0 48 0 60 63 0 57 0 51 54 63 60 57 54 48
</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 -0.390625 1.171875 0.390625 0.390625 -0.390625 -0.390625 -1.171875 0.390625 1.171875 -0.390625 1.171875 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 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 1.171875 1.171875 0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 1.953125 -0.390625 2.734375 -0.390625 -0.390625 0.390625 -0.390625 2.734375 -0.390625 -1.171875 0.390625 2.734375 0.390625 -0.390625 2.734375 0.390625 -2.734375 -1.953125 0.390625 -0.390625 1.171875 1.171875 -0.390625 -0.390625 1.953125 0.390625 2.734375 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
