<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-26 -299 09:20:00.000"
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="14.0">
<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="1 12 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" >
2026.10.26 (299) 09:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629910260920009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="11" >
<URSI ID="42" Val="1.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="3.500" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="1.550" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="1.860" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="24" Val="112.931" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="120.000" Name="h`Es" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="105.958" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="15.803" Name="yE" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.935" Units="MHz" ModelName="CCIR-79" />
<Modeled Name="foF2p" Val="6.476" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="1.900" Description="Minimum frequency of Es-layer" Units="MHz" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="E" Polarization="O" Num="7">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.55 1.6 1.65 1.7 1.75 1.8 1.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
112.931 114.257 115.770 117.530 119.639 122.285 125.883
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 63 63 63 0 60
</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
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="33">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.9 1.95 2.0 2.05 2.1 2.15 2.2 2.25 2.3 2.35 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
122.500 120.000 120.714 121.429 122.143 122.857 123.571 124.286 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 130.000 128.333 126.667 125.000 125.000 125.000 125.000 130.000 125.000 130.000 135.000 135.000 135.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 66 0 0 0 0 0 0 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 51 0 0
</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 1.953125 -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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="17">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.0 91.0 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 105.958
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.5801465 0.9007348 1.088384 1.2319553 1.349752 1.4492385 1.534254 1.6070616 1.6691693 1.7215592 1.7649487 1.7998271 1.8265568 1.8453971 1.8565115 1.86

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="1" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.86" PeakHeight="105.958" Num="3" Error="5.379">
-22.786 8.543 -1.715
</ShiftedChebyshev>
</ShiftedChebyshevList>
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
