<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-24 -083 23:10:00.000"
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" >
2026.03.24 (083) 23:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.18" 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">
FF202608303242310009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="18" >
<URSI ID="00" Val="6.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.808" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="19.092" 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="6.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="420.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="420.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="445.000" 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="6.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.959" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="71">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
490.000 490.000 490.000 485.000 483.929 482.857 481.786 480.714 479.643 478.571 477.500 476.429 475.357 474.286 473.214 472.143 471.071 470.000 470.000 490.000 500.000 510.000 525.000 530.000 525.000 527.500 530.000 535.000 531.406 527.813 524.219 520.625 517.031 513.438 509.844 506.250 502.656 499.063 495.469 491.875 488.281 484.688 481.094 477.500 473.906 470.313 466.719 463.125 459.531 455.938 452.344 448.750 445.156 441.563 437.969 434.375 430.781 427.188 423.594 420.000 420.000 425.000 430.000 435.000 438.333 441.667 445.000 455.000 465.000 479.751 501.451
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 54 57 51 0 0 0 51 0 51 48 0 0 0 0 0 54 54 51 57 54 54 54 48 0 48 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 51 51 0 0 51 51 0 0 54 0 0 0 0 0 0 51 51 51 0 54 0 0 54 51 57 48 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -1.171875 0.390625 -0.390625 -0.390625 -1.171875 0.390625 0.390625 -0.390625 -0.390625 -1.171875 -0.390625 2.734375 0.390625 -1.953125 -1.953125 1.171875 -0.390625 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.953125 0.390625 -0.390625 -0.390625 -2.734375 -0.390625 2.734375 -0.390625 2.734375 1.171875 0.390625 1.171875 0.390625 1.171875 -1.171875 -1.953125 -1.171875 2.734375 1.171875 -1.953125 -0.390625 -0.390625 0.390625 -0.390625 2.734375 1.953125 1.953125 -0.390625 2.734375 -0.390625 1.953125 1.171875 -1.171875 0.390625 1.953125 1.953125 2.734375 1.953125 1.171875 0.390625 0.390625 0.390625 1.171875 0.390625 1.953125 0.390625
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
