<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-17 -048 08:40:00.000"
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 0 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 0 0 "/>
<Comments>AR.5002.44 Confidence: 75% PACIFIC flags: Baseline built without F2 center</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) 08:40:00</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">
FF202604802170840009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="6" >
<URSI ID="42" Val="2.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="8.150" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="34" Val="108.333" Name="h`Es" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.607" Units="MHz" ModelName="CCIR-79" />
<Modeled Name="foF2p" Val="3.662" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.400" Description="Minimum frequency of Es-layer" Units="MHz" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="Es" Polarization="O" Num="116">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.4 2.45 2.5 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
115.000 115.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 110.000 108.000 106.000 104.000 102.000 100.000 105.000 105.000 105.000 105.000 105.000 100.000 100.000 101.250 102.500 103.750 105.000 105.000 105.000 105.000 105.000 105.000 110.000 110.000 110.000 110.000 108.571 107.143 105.714 104.286 102.857 101.429 100.000 101.250 102.500 103.750 105.000 107.143 109.286 111.429 113.571 115.714 117.857 120.000 120.000 122.500 125.000 125.000 122.500 120.000 120.000 120.000 120.000 120.000 120.000 125.000 110.000 109.444 108.889 108.333 107.778 107.222 106.667 106.111 105.556 105.000 105.000 106.667 108.333 110.000 110.000 110.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000 105.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 66 0 0 0 0 72 75 0 75 0 75 0 0 0 69 0 0 75 0 0 0 0 69 84 78 0 81 0 78 69 0 0 63 78 0 78 81 78 78 72 63 69 66 0 0 0 69 0 0 69 0 0 0 69 0 0 0 0 0 0 0 54 0 0 51 0 0 0 54 0 0 0 48 45 0 0 0 45 0 0 0 0 48 45 0 0 45 0 45 51 0 51 45 0 0 0 0 45 45 0 0 51 0 0 45 0 45 45 45 45 0 0 0 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 -0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -1.171875 -0.390625 0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 1.171875 0.390625 0.390625 -1.171875 -0.390625 1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.953125 -1.171875 -0.390625 -0.390625 -0.390625 1.171875 -0.390625 -1.171875 -1.171875 -1.171875 1.171875 0.390625 1.171875 0.390625 0.390625 1.171875 -1.171875 1.171875 -1.171875 1.171875 1.171875 1.171875 0.390625 -0.390625 0.390625 1.171875 1.171875 1.953125 1.953125 -0.390625 1.953125 -1.171875 1.171875 1.171875 1.171875 -2.734375 0.390625 0.390625 0.390625 1.171875 -0.390625 1.171875 0.390625 0.390625 1.171875 1.171875 2.734375 1.953125 1.171875
</TraceValueList>
</Trace>
</TraceList>
</SAORecord>
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