<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 00:40:00.000"
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 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" >
2026.10.29 (302) 00:40:00</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">
FF202630210290040009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="18" >
<URSI ID="00" Val="5.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.447" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.269" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="314.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="314.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="314.000" 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="5.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.331" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="56">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
370.000 366.000 362.000 358.000 354.000 350.000 325.000 326.818 328.636 330.455 332.273 334.091 335.909 337.727 339.545 341.364 343.182 345.000 346.667 348.333 350.000 357.500 365.000 363.750 362.500 361.250 360.000 358.750 357.500 356.250 355.000 353.750 352.500 351.250 350.000 348.750 347.500 346.250 345.000 343.750 342.500 341.250 340.000 340.000 330.000 328.000 326.000 324.000 322.000 320.000 318.000 316.000 314.000 327.237 341.587 357.198
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 0 0 0 60 0 0 63 66 0 63 0 0 66 66 63 60 66 63 66 0 63 0 0 63 0 57 0 60 0 63 0 69 66 66 0 66 60 0 0 0 60 63 69 0 0 0 63 0 0 60 66 0 60 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.953125 1.171875 1.171875 -2.734375 0.390625 1.953125 1.171875 1.953125 1.953125 1.171875 1.953125 1.953125 1.171875 1.171875 1.953125 1.171875 1.953125 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 -2.734375 -2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 1.953125 1.953125 -2.734375 1.953125 -2.734375 2.734375 2.734375 -1.953125 2.734375 2.734375 2.734375 -2.734375 1.953125 2.734375 2.734375 -2.734375 2.734375
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
