<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 15:40:00.000"
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" >
2026.10.23 (296) 15:40:00</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">
FF202629610231540009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.438" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.695" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="505.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="505.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="515.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.358" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.346" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="367.201" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="233.194" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.160" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="178.324" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.201" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="96.783" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="201.090" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.690" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
510.000 505.000 510.000 515.000 520.000 515.000 520.000 525.000 535.000 535.000 540.000 550.000 555.000 565.000 570.000 580.000 591.636 604.166 617.696 632.353 648.282 665.657 684.683
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
42 0 0 0 42 0 0 0 0 0 0 0 0 0 51 0 0 0 0 0 0 42 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 0.390625 0.390625 -1.953125 0.390625 -0.390625
</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" >
89.488 90.0 95.0 100.0 105.0 110.0 111.681 113.362 115.0 115.043 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 367.201 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.259 2.906 3.249 3.358 3.235 3.235 3.355 3.358 3.527 3.69 3.851 4.013 4.177 4.346 4.52 4.699 4.884 5.074 5.269 5.468 5.67 5.874 6.078 6.281 6.483 6.683 6.879 7.072 7.261 7.447 7.629 7.807 7.981 8.152 8.319 8.483 8.643 8.801 8.955 9.106 9.254 9.4 9.541 9.68 9.815 9.946 10.074 10.196 10.313 10.425 10.529 10.625 10.712 10.787 10.85 10.899 10.932 10.948 10.95 10.949 10.943 10.932 10.915 10.894 10.867 10.836 10.8 10.761 10.717 10.669 10.617 10.562 10.503 10.442 10.377 10.31 10.239 10.166 10.091 10.014 9.935 9.853 9.77 9.685 9.599 9.511 9.422 9.332 9.241 9.148 9.055 8.962 8.867 8.772 8.677 8.581 8.485 8.388 8.292 8.195 8.099 8.002 7.906 7.81 7.713 7.618 7.522 7.427 7.332 7.238 7.144 7.051 6.958 6.866 6.775 6.684 6.594 6.504 6.415 6.327 6.24 6.154 6.068 5.983 5.899 5.815 5.733 5.651 5.57 5.49 5.411 5.333 5.255 5.179 5.103 5.029 4.955 4.882 4.809 4.738 4.668 4.598 4.53 4.462 4.395 4.329 4.264 4.199 4.136 4.073 4.011 3.951 3.89 3.831 3.772 3.715 3.658 3.602 3.546 3.492 3.438 3.385 3.333 3.281 3.23 3.18 3.131 3.082 3.034 2.987 2.941 2.895 2.85 2.805 2.761 2.718 2.676 2.634 2.592 2.552 2.512 2.472 2.433 2.395 2.357 2.32

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.358" PeakHeight="110.0" Num="3" Error="0.0">
-30.478 13.117 -3.151
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.358" EndFrequency="10.95" PeakHeight="367.201" Num="5" zHalfNm="233.194" Error="4.966">
-239.318 -22.041 14.38 -7.793 2.614
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.043" Depth="0.123"/>
<TopsideChapman PeakHeight="367.201" PeakDensity="1487624.1" PeakScaleHeight="96.783" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
