<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-09 -282 21:20:00.000"
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="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 2 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, 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" >
2026.10.09 (282) 21:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628210092120009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.021" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.901" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="360.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="360.000" 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="7.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="402.298" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.519" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="327.310" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="284.800" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.967" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="62.328" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="8.812" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="31.080" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="66.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.610" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="30">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
360.000 365.000 367.500 370.000 370.000 372.500 375.000 375.000 372.500 370.000 375.000 376.250 377.500 378.750 380.000 385.000 385.000 385.888 386.877 387.986 389.238 390.664 392.300 394.199 396.429 399.083 402.298 406.270 411.304 417.890
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 81 0 81 84 0 72 75 0 75 72 0 63 0 63 63 66 66 60 0 66 66 63 0 63 57 63 57 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 -1.171875 -1.953125 -1.953125 1.171875 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="133">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
91.521 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 137.672 140.0 145.0 150.0 155.0 160.0 165.0 165.344 170.0 175.0 180.0 185.0 190.0 193.016 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 327.31 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.343 0.45 0.503 0.519 0.512 0.491 0.453 0.394 0.3 0.222 0.222 0.222 0.222 0.222 0.222 0.222 0.222 0.272 0.326 0.379 0.433 0.487 0.519 0.582 0.711 0.839 0.98 1.141 1.327 1.542 1.786 2.056 2.343 2.643 2.95 3.26 3.571 3.884 4.196 4.51 4.824 5.139 5.454 5.768 6.079 6.382 6.67 6.926 7.126 7.237 7.25 7.245 7.209 7.142 7.048 6.931 6.794 6.641 6.474 6.296 6.11 5.918 5.721 5.523 5.324 5.125 4.928 4.734 4.543 4.356 4.173 3.995 3.822 3.655 3.493 3.337 3.186 3.041 2.901 2.767 2.639 2.516 2.398 2.285 2.177 2.073 1.975 1.88 1.79 1.704 1.622 1.544 1.47 1.399 1.331 1.266 1.205 1.147 1.091 1.038 0.987 0.939 0.893 0.85 0.808 0.769 0.731 0.696 0.662 0.629 0.598 0.569 0.541 0.515 0.49 0.466 0.443 0.421 0.401 0.381 0.362 0.345 0.328 0.312 0.296 0.282 0.268 0.255 0.242 0.23 0.219 0.208

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.519" PeakHeight="110.0" Num="3" Error="0.0">
-22.604 4.56 -0.435
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.519" EndFrequency="7.25" PeakHeight="327.31" Num="5" zHalfNm="284.8" Error="3.315">
-124.925 -17.223 11.105 -5.765 2.514
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="83.016" Depth="0.297"/>
<TopsideChapman PeakHeight="327.31" PeakDensity="652140.2" PeakScaleHeight="31.08" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
