<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-03 -307 09:10:00.000"
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="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="2 2 0 0 0 0 0 0 0 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</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" >
2026.11.03 (307) 09:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630711030910009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.756" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.277" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="180.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="180.000" 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="4.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="284.195" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.788" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="217.608" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="180.212" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.882" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="39.357" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.090" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="24.218" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="68.820" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="36">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
185.000 180.000 195.000 210.000 225.000 240.000 255.000 260.000 260.833 261.667 262.500 263.333 264.167 265.000 265.000 265.833 266.667 267.500 268.333 269.167 270.000 270.833 271.667 272.500 273.333 274.167 275.000 275.833 276.667 277.500 277.720 278.023 278.470 279.195 280.571 284.195
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 0 0 0 0 66 54 0 0 0 0 0 0 54 0 0 0 0 51 0 0 0 0 0 48 0 0 0 0 0 0 69 0 72 66
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 -1.953125 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="87">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.826 90.0 95.0 100.0 105.0 110.0 115.0 119.421 120.0 125.0 128.843 130.0 135.0 138.264 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 217.608 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.215 1.197 1.549 1.73 1.788 1.75 1.651 1.651 1.651 1.651 1.668 1.741 1.788 1.836 2.015 2.238 2.448 2.632 2.799 2.953 3.101 3.247 3.391 3.539 3.691 3.851 4.026 4.224 4.47 4.6 4.596 4.561 4.495 4.404 4.291 4.162 4.02 3.869 3.712 3.551 3.389 3.228 3.068 2.911 2.759 2.611 2.468 2.33 2.199 2.073 1.953 1.839 1.73 1.628 1.53 1.438 1.352 1.27 1.192 1.12 1.051 0.987 0.926 0.869 0.815 0.765 0.718 0.673 0.631 0.592 0.555 0.521 0.488 0.458 0.429 0.403 0.378 0.354 0.332 0.311 0.292 0.274 0.257 0.241 0.226 0.211

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.788" PeakHeight="110.0" Num="3" Error="0.0">
-28.713 10.646 -2.107
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.788" EndFrequency="4.6" PeakHeight="217.608" Num="5" zHalfNm="180.212" Error="5.919">
-56.93 -32.751 13.439 -2.194 -0.908
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="28.264" Depth="0.137"/>
<TopsideChapman PeakHeight="217.608" PeakDensity="262531.03" PeakScaleHeight="24.218" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
