<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-28 -301 18:10:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, 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" >
2026.10.28 (301) 18:10:00</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">
FF202630110281810009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.499" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.244" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.400" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" 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="2.890" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="368.157" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="241.097" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.193" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="170.291" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.622" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="91.897" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="190.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.700" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
485.000 490.000 495.000 500.000 510.000 515.000 525.000 535.000 545.000 560.000 575.000 595.000 625.000 650.000 617.500 585.000 605.000 633.006 665.811
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 63 0 0 60 0 0 60 60 60 60 51 54 0 54 54 57 51
</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 1.953125 0.390625 0.390625 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" >
89.564 90.0 95.0 100.0 105.0 110.0 113.713 115.0 117.426 120.0 121.139 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 368.157 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.942 2.502 2.796 2.89 2.768 2.768 2.768 2.853 2.89 3.015 3.168 3.319 3.469 3.623 3.78 3.942 4.11 4.284 4.463 4.648 4.838 5.031 5.227 5.424 5.62 5.816 6.009 6.2 6.388 6.572 6.753 6.93 7.104 7.274 7.441 7.604 7.765 7.922 8.076 8.227 8.375 8.52 8.661 8.8 8.935 9.067 9.195 9.318 9.437 9.55 9.656 9.754 9.843 9.921 9.988 10.04 10.077 10.096 10.1 10.1 10.095 10.084 10.068 10.047 10.021 9.99 9.955 9.915 9.872 9.824 9.772 9.717 9.659 9.597 9.533 9.465 9.396 9.323 9.248 9.171 9.092 9.012 8.929 8.845 8.76 8.673 8.585 8.496 8.407 8.316 8.224 8.132 8.04 7.947 7.854 7.76 7.666 7.573 7.479 7.385 7.291 7.198 7.105 7.012 6.919 6.827 6.735 6.643 6.552 6.462 6.372 6.283 6.195 6.107 6.02 5.933 5.848 5.763 5.679 5.595 5.513 5.431 5.35 5.27 5.191 5.113 5.035 4.959 4.883 4.809 4.735 4.662 4.59 4.519 4.448 4.379 4.31 4.243 4.176 4.11 4.046 3.982 3.918 3.856 3.795 3.734 3.674 3.616 3.558 3.5 3.444 3.389 3.334 3.28 3.227 3.174 3.123 3.072 3.022 2.973 2.924 2.877 2.83 2.783 2.738 2.693 2.649 2.605 2.562 2.52 2.478 2.438 2.397 2.358 2.319 2.28 2.243 2.206 2.169 2.133 2.098 2.063 2.029 1.995 1.962 1.929

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.89" PeakHeight="110.0" Num="3" Error="0.0">
-30.101 12.564 -2.899
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.89" EndFrequency="10.1" PeakHeight="368.157" Num="5" zHalfNm="241.097" Error="5.91">
-234.43 -21.485 13.863 -7.63 2.664
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.139" Depth="0.122"/>
<TopsideChapman PeakHeight="368.157" PeakDensity="1265632.8" PeakScaleHeight="91.897" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
