<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-28 -301 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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.10.28 (301) 09:10:00</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">
FF202630110280910009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="6.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.358" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.994" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" 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="6.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="317.387" 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="1.783" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="251.200" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="196.854" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.170" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="73.112" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.250" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="39.658" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="83.900" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="32">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 275.000 275.000 275.000 280.000 282.500 285.000 285.000 285.000 285.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 305.000 305.000 310.000 311.364 312.988 314.955 317.387 320.469 324.504 330.014 337.988 350.555 373.289 426.908
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 75 60 69 72 75 78 66 63 75 78 78 81 75 0 66 72 66 69 69 78 78 72 81 78 84 81 63 57
</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 1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="139">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.828 90.0 95.0 100.0 105.0 110.0 115.0 119.451 120.0 125.0 128.901 130.0 135.0 138.352 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 251.2 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.215 1.194 1.544 1.726 1.783 1.745 1.646 1.646 1.646 1.646 1.662 1.734 1.783 1.85 2.061 2.285 2.521 2.767 3.021 3.277 3.535 3.791 4.045 4.295 4.541 4.783 5.021 5.253 5.479 5.697 5.905 6.097 6.267 6.407 6.504 6.548 6.55 6.544 6.52 6.478 6.421 6.349 6.265 6.169 6.064 5.951 5.831 5.705 5.574 5.44 5.303 5.164 5.023 4.882 4.742 4.601 4.462 4.324 4.188 4.053 3.921 3.792 3.665 3.541 3.42 3.302 3.187 3.075 2.966 2.86 2.758 2.658 2.562 2.468 2.378 2.29 2.206 2.124 2.045 1.969 1.895 1.824 1.756 1.69 1.626 1.565 1.505 1.448 1.393 1.34 1.289 1.24 1.193 1.147 1.103 1.061 1.021 0.982 0.944 0.908 0.873 0.839 0.807 0.776 0.746 0.718 0.69 0.663 0.638 0.613 0.59 0.567 0.545 0.524 0.504 0.485 0.466 0.448 0.431 0.414 0.398 0.383 0.368 0.354 0.34 0.327 0.314 0.302 0.29 0.279 0.268 0.258 0.248 0.239 0.229 0.221 0.212 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.783" PeakHeight="110.0" Num="3" Error="0.0">
-28.704 10.634 -2.102
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.783" EndFrequency="6.55" PeakHeight="251.2" Num="5" zHalfNm="196.854" Error="1.256">
-105.095 -12.24 6.31 -2.235 0.412
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="28.352" Depth="0.137"/>
<TopsideChapman PeakHeight="251.2" PeakDensity="532289.06" PeakScaleHeight="39.658" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
