<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 20:30:00.000"
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 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" >
2026.10.29 (302) 20:30:00</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">
FF202630210292030009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="9.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.484" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.597" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="485.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="485.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.435" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="401.611" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="293.488" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.374" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="153.152" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="38.438" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.682" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="157.450" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.950" 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" >
8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
485.000 485.000 495.000 500.000 505.000 515.000 520.000 520.000 530.000 535.000 541.863 549.626 558.479 568.669 580.523 594.484 611.172 631.468 656.688 688.868
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 60 60 60 0 48 0 60 60 60 54 60 57 57 57 54 54 0 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 -0.390625 -0.390625 1.953125 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.965 90.0 95.0 100.0 105.0 110.0 115.0 120.0 121.754 125.0 130.0 133.508 135.0 140.0 145.0 145.262 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 401.611 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.203 0.959 1.243 1.389 1.435 1.409 1.328 1.285 1.285 1.285 1.285 1.304 1.368 1.432 1.435 1.542 1.658 1.777 1.901 2.029 2.164 2.305 2.452 2.606 2.767 2.934 3.108 3.289 3.474 3.666 3.862 4.062 4.265 4.471 4.68 4.89 5.102 5.314 5.526 5.738 5.949 6.159 6.368 6.575 6.779 6.981 7.179 7.373 7.564 7.749 7.929 8.103 8.271 8.431 8.584 8.727 8.861 8.984 9.096 9.195 9.282 9.355 9.414 9.458 9.486 9.499 9.5 9.498 9.49 9.475 9.454 9.427 9.394 9.355 9.311 9.262 9.209 9.151 9.089 9.023 8.953 8.88 8.804 8.725 8.644 8.559 8.473 8.384 8.294 8.202 8.108 8.014 7.917 7.82 7.722 7.624 7.524 7.425 7.324 7.224 7.124 7.023 6.923 6.822 6.722 6.622 6.523 6.424 6.326 6.228 6.131 6.034 5.938 5.843 5.749 5.656 5.563 5.472 5.381 5.292 5.203 5.115 5.029 4.943 4.859 4.775 4.693 4.611 4.531 4.452 4.374 4.297 4.221 4.146 4.073 4.0 3.928 3.858 3.789 3.72 3.653 3.587 3.522 3.458 3.395 3.333 3.272 3.212 3.153 3.095 3.038 2.982 2.927 2.873 2.819 2.767 2.716 2.665 2.616 2.567 2.519 2.472 2.426 2.38 2.336 2.292 2.249 2.207 2.165 2.124 2.084 2.045 2.006 1.969 1.931 1.895 1.859 1.824 1.789 1.756 1.722 1.69 1.658 1.626 1.595 1.565 1.535

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.435" PeakHeight="110.0" Num="3" Error="0.0">
-27.968 9.691 -1.758
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.435" EndFrequency="9.5" PeakHeight="401.611" Num="5" zHalfNm="293.488" Error="1.842">
-252.669 -6.4 4.18 -2.44 0.98
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="35.262" Depth="0.15"/>
<TopsideChapman PeakHeight="401.611" PeakDensity="1119727.0" PeakScaleHeight="80.682" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
