<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-17 -048 23:40:00.000"
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" >
2026.02.17 (048) 23:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.14" 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">
FF202604802172340009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="18" >
<URSI ID="00" Val="9.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.001" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.062" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="415.048" 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="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.064" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="133">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 320.000 315.000 320.000 310.000 300.000 300.000 300.000 300.000 300.000 300.000 305.000 307.500 310.000 327.000 344.000 361.000 378.000 395.000 390.000 387.500 385.000 400.000 400.000 400.000 400.000 400.000 400.000 400.000 400.000 400.000 405.000 405.000 408.333 411.667 415.000 415.000 410.000 405.000 400.000 400.541 401.081 401.622 402.162 402.703 403.243 403.784 404.324 404.865 405.405 405.946 406.486 407.027 407.568 408.108 408.649 409.189 409.730 410.270 410.811 411.351 411.892 412.432 412.973 413.514 414.054 414.595 415.135 415.676 416.216 416.757 417.297 417.838 418.378 418.919 419.459 420.000 415.000 412.500 410.000 410.000 410.000 412.500 415.000 425.000 425.000 425.833 426.667 427.500 428.333 429.167 430.000 430.833 431.667 432.500 400.000 400.000 400.000 400.000 400.000 400.000 400.000 400.000 405.000 405.000 405.000 405.000 410.000 410.000 415.000 410.000 415.000 420.000 420.000 420.000 420.000 422.500 425.000 423.333 421.667 420.000 420.000 420.000 418.000 416.000 414.000 412.000 410.000 412.500 412.947 413.672 415.048 418.672
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 51 57 0 60 57 0 60 0 63 57 0 51 0 0 0 0 60 51 0 51 54 0 0 0 51 0 60 57 60 57 57 0 0 0 54 0 0 0 0 0 0 0 0 0 54 0 0 0 51 0 0 51 0 0 0 0 0 54 54 51 0 0 0 0 0 0 0 0 0 51 0 0 0 0 48 48 0 48 0 54 0 48 51 51 0 0 51 0 0 0 0 0 0 54 57 54 51 60 57 60 57 57 57 57 60 54 54 57 57 54 51 51 0 51 0 48 51 0 51 54 51 57 51 48 54 54 51 54 57 51 54
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 1.171875 0.390625 1.171875 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 0.390625 0.390625 1.953125 1.171875 1.171875 0.390625 0.390625 -0.390625 1.953125 0.390625 -1.171875 -0.390625 0.390625 -0.390625 -1.171875 -0.390625 -1.953125 0.390625 -1.171875 -1.171875 -1.171875 -0.390625 0.390625 -1.171875 0.390625 2.734375 1.171875 -0.390625 1.953125 -0.390625 0.390625 -0.390625 -0.390625 0.390625 1.171875 -1.171875 1.953125 -1.171875 0.390625 -2.734375 0.390625 1.171875 -0.390625 -1.171875 0.390625 0.390625 -1.171875 -0.390625 0.390625 0.390625 1.171875 -0.390625 -1.171875 -0.390625 -1.953125 2.734375 0.390625 0.390625 -1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -1.171875 0.390625 -2.734375 -1.953125 -0.390625 -0.390625 -0.390625 2.734375 -1.171875 -0.390625 1.171875 1.953125 -1.171875 -2.734375 -1.171875 1.171875 -0.390625 -1.171875 -2.734375 0.390625 -1.171875 -1.171875 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 0.390625 -1.171875 -1.171875 0.390625 0.390625 -0.390625 -0.390625 -1.171875 -2.734375 2.734375 -2.734375 1.953125 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -2.734375 -1.171875 -0.390625 -1.953125 -0.390625 -0.390625 -1.171875 -0.390625
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
