<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 23:30:00.000"
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="12.0">
<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" >
2026.10.20 (293) 23:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202629310202330009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="17" >
<URSI ID="00" Val="8.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.730" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.069" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="395.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="395.000" 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="8.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.882" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.733" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="87">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
605.000 597.500 590.000 575.000 567.500 560.000 555.000 550.000 545.000 545.000 545.000 540.000 540.000 540.000 540.000 540.000 540.000 540.000 537.500 535.000 535.000 520.000 516.212 512.424 508.636 504.848 501.061 497.273 493.485 489.697 485.909 482.121 478.333 474.545 470.758 466.970 463.182 459.394 455.606 451.818 448.030 444.242 440.455 436.667 432.879 429.091 425.303 421.515 417.727 413.939 410.152 406.364 402.576 398.788 395.000 400.000 405.000 410.000 415.000 420.455 425.909 431.364 436.818 442.273 447.727 453.182 458.636 464.091 469.545 475.000 470.000 470.111 470.236 470.379 470.545 470.739 470.968 471.244 471.581 472.005 472.551 473.284 474.317 475.882 478.535 484.013 501.961
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 51 54 0 54 0 57 54 57 57 51 0 0 0 0 51 51 0 0 48 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 45 0 0 0 0 0 0 0 42 0 0 0 0 0 0 0 0 42 0 42 0 0 42 0 0 0 0 0 0 0 0 0 0 39 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.953125 1.171875 1.953125 1.171875 2.734375 1.171875 1.953125 1.171875 2.734375 2.734375 2.734375 1.953125 2.734375 2.734375 1.171875 2.734375 1.953125 1.953125 2.734375 2.734375 1.953125 -0.390625 2.734375 1.171875 -0.390625 -1.953125 0.390625 1.953125 1.171875 -1.953125 0.390625 1.171875 0.390625 1.171875 -0.390625 0.390625 1.171875 -0.390625 1.171875 1.171875 1.171875 2.734375 -1.171875 -0.390625 -1.953125 2.734375 -1.171875 0.390625 1.171875 0.390625 0.390625 -0.390625 -1.171875 -0.390625 0.390625 1.171875 0.390625 1.171875 -1.171875 0.390625 -2.734375 0.390625 -0.390625 2.734375 2.734375 -1.953125 2.734375 -0.390625 -1.953125 1.171875 0.390625 0.390625 -2.734375 2.734375 -1.171875 -1.953125 1.953125 -0.390625 -2.734375 -0.390625 1.171875 1.171875 -2.734375 0.390625 -0.390625 -0.390625 -1.171875
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
</SAORecordList>
