<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-17 -076 23:20:00.000"
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" >
2026.03.17 (076) 23:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607603172320009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="18" >
<URSI ID="00" Val="8.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.894" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.164" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="350.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="350.000" 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="0.650" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="411.945" 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="5.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.857" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="102">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
415.000 405.000 400.000 402.500 405.000 400.000 407.500 415.000 417.727 420.455 423.182 425.909 428.636 431.364 434.091 436.818 439.545 442.273 445.000 438.333 431.667 425.000 410.000 408.750 407.500 406.250 405.000 403.750 402.500 401.250 400.000 398.750 397.500 396.250 395.000 393.750 392.500 391.250 390.000 385.000 385.000 380.000 375.000 372.500 370.000 375.000 375.000 370.000 360.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 352.500 355.000 357.000 359.000 361.000 363.000 365.000 370.000 370.000 370.000 370.000 370.000 372.500 375.000 375.000 380.000 380.000 395.000 391.000 387.000 383.000 379.000 380.676 382.475 384.411 386.500 388.762 391.219 393.897 396.826 400.046 403.600 407.543 411.945 416.888 422.481 428.859 436.201 444.742 454.804 466.832 481.465
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 60 57 0 57 54 0 51 0 0 0 0 0 0 0 0 0 0 51 0 0 54 57 54 54 0 0 0 0 51 0 54 0 0 0 0 0 0 51 54 51 0 51 0 0 48 51 54 0 60 0 60 54 0 0 0 0 0 0 51 54 57 0 0 0 0 54 54 0 54 54 57 0 51 48 54 51 54 0 0 0 0 0 0 48 0 51 51 0 51 45 0 0 0 51 0 0 0 51 54 45 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.953125 0.390625 -0.390625 -1.953125 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 -0.390625 0.390625 1.953125 -2.734375 1.171875 -1.953125 1.953125 0.390625 0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -2.734375 -2.734375 1.953125 -0.390625 -2.734375 -1.171875 0.390625 -1.171875 -1.171875 0.390625 -0.390625 -1.171875 -0.390625 -1.953125 1.171875 1.171875 1.953125 1.171875 1.171875 0.390625 1.171875 1.171875 1.953125 -1.171875 1.953125 1.953125 0.390625 1.171875 1.171875 1.171875 1.953125 1.953125 1.953125 -1.953125 0.390625 1.171875 0.390625 1.171875 1.171875 1.171875 -1.953125 -0.390625 0.390625 -2.734375 1.953125 -1.171875 -2.734375 -1.171875 1.953125 0.390625 1.171875 -2.734375 -1.953125 1.953125 -0.390625 -0.390625 0.390625 0.390625 -2.734375 -1.953125 -1.171875 1.171875 1.953125 -2.734375 -1.171875 -1.171875 -0.390625 -2.734375 0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
