<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 18:40:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.10.24 (297) 18:40:00</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">
FF202629710241840009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.746" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.655" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="440.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="440.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="471.700" 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="2.720" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="307.560" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="218.399" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.316" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="120.315" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="39.803" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="64.016" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="134.180" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.650" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
440.000 445.000 450.000 450.000 451.786 453.755 455.937 458.368 461.095 464.174 467.677 471.700 476.368 481.848 488.373 496.274
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 54 48 54 57 57 57 57 54 54 54 51 51 51 42 42
</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
</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" >
89.596 90.0 95.0 100.0 105.0 110.0 114.511 115.0 119.023 120.0 123.534 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 307.56 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.827 2.355 2.632 2.72 2.597 2.597 2.597 2.624 2.72 2.791 3.011 3.221 3.432 3.651 3.88 4.123 4.381 4.652 4.935 5.226 5.521 5.815 6.107 6.393 6.672 6.944 7.209 7.466 7.716 7.96 8.198 8.43 8.656 8.878 9.095 9.306 9.512 9.711 9.904 10.088 10.26 10.418 10.557 10.67 10.751 10.794 10.8 10.798 10.786 10.762 10.726 10.68 10.624 10.558 10.484 10.402 10.312 10.215 10.112 10.004 9.89 9.771 9.648 9.521 9.391 9.258 9.123 8.985 8.846 8.705 8.563 8.42 8.276 8.132 7.988 7.844 7.7 7.557 7.415 7.273 7.133 6.993 6.855 6.718 6.582 6.448 6.315 6.184 6.055 5.928 5.802 5.679 5.557 5.437 5.319 5.203 5.089 4.976 4.866 4.758 4.652 4.548 4.445 4.345 4.247 4.15 4.056 3.963 3.872 3.784 3.697 3.611 3.528 3.446 3.366 3.288 3.211 3.136 3.063 2.991 2.921 2.853 2.786 2.72 2.656 2.593 2.532 2.472 2.414 2.357 2.301 2.246 2.193 2.141 2.09 2.04 1.992 1.944 1.898 1.853 1.808 1.765 1.723 1.682 1.642 1.603 1.564 1.527 1.49 1.455 1.42 1.386 1.352 1.32 1.288 1.257 1.227 1.198 1.169 1.141 1.114 1.087 1.061 1.035 1.01 0.986 0.962 0.939 0.917 0.895 0.873 0.852 0.832 0.812 0.792 0.773 0.754 0.736 0.718 0.701 0.684 0.668 0.652 0.636 0.621 0.606

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.72" PeakHeight="110.0" Num="3" Error="0.0">
-29.941 12.334 -2.797
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.72" EndFrequency="10.8" PeakHeight="307.56" Num="5" zHalfNm="218.399" Error="5.443">
-172.736 -19.396 12.642 -7.109 2.573
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.534" Depth="0.123"/>
<TopsideChapman PeakHeight="307.56" PeakDensity="1447146.4" PeakScaleHeight="64.016" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
