<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 11:10:00.000"
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="15.0">
<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: 90% PACIFIC flags: 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" >
2026.10.19 (292) 11:10:00</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">
FF202629210191110009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="6.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.621" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.988" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="6.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="300.938" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.884" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="209.189" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="155.818" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.964" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="60.727" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.056" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="34.309" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="90.300" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.110" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="20">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 290.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.402 295.912 296.581 297.497 298.828 300.938 304.795
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 72 72 75 72 75 75 75 75 78 78 75 75 72 75 72 78 78 78 66
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="118">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.566 90.0 95.0 100.0 105.0 110.0 113.741 115.0 117.483 120.0 121.224 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 209.189 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.938 2.497 2.79 2.884 2.762 2.762 2.762 2.844 2.884 3.091 3.368 3.669 3.989 4.302 4.586 4.84 5.068 5.277 5.471 5.655 5.832 6.005 6.177 6.352 6.535 6.737 6.9 6.9 6.881 6.838 6.771 6.684 6.58 6.46 6.328 6.185 6.033 5.874 5.71 5.543 5.373 5.201 5.03 4.859 4.689 4.521 4.356 4.194 4.035 3.88 3.729 3.581 3.439 3.3 3.166 3.036 2.91 2.789 2.673 2.56 2.452 2.348 2.248 2.151 2.059 1.97 1.885 1.803 1.725 1.65 1.578 1.509 1.443 1.38 1.319 1.261 1.206 1.152 1.102 1.053 1.006 0.962 0.919 0.879 0.84 0.803 0.767 0.733 0.701 0.67 0.64 0.611 0.584 0.558 0.534 0.51 0.487 0.465 0.445 0.425 0.406 0.388 0.371 0.354 0.339 0.324 0.309 0.295 0.282 0.27 0.258 0.246 0.235 0.225 0.215 0.205

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.884" PeakHeight="110.0" Num="3" Error="0.0">
-30.096 12.557 -2.895
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.884" EndFrequency="6.9" PeakHeight="209.189" Num="5" zHalfNm="155.818" Error="2.817">
-70.989 -28.603 17.694 -7.83 1.763
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.224" Depth="0.122"/>
<TopsideChapman PeakHeight="209.189" PeakDensity="590694.8" PeakScaleHeight="34.309" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
