<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 16:50:00.000"
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) 16:50:00</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">
FF202629710241650009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.596" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.997" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="465.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="465.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="470.000" 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="3.214" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.278" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="342.016" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="221.753" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.727" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="160.842" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.929" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="87.569" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="179.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.750" 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" >
9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
465.000 470.000 475.000 470.000 480.000 490.000 490.000 500.000 505.000 511.785 519.363 527.885 537.536 548.558 561.265 576.075 593.558 614.509 640.073
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 48 0 0 48 51 60 57 0 45 51 45 51 0 51 51 51 45
</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
</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" >
89.511 90.0 95.0 100.0 105.0 110.0 112.283 114.565 115.0 116.848 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 342.016 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.161 2.782 3.109 3.214 3.092 3.092 3.115 3.214 3.327 3.501 3.674 3.848 4.025 4.208 4.396 4.59 4.79 4.995 5.204 5.416 5.631 5.845 6.06 6.272 6.482 6.689 6.892 7.091 7.286 7.478 7.665 7.848 8.027 8.202 8.373 8.541 8.704 8.863 9.018 9.169 9.314 9.455 9.59 9.718 9.84 9.953 10.056 10.149 10.23 10.296 10.348 10.382 10.399 10.4 10.399 10.392 10.378 10.359 10.334 10.303 10.267 10.227 10.181 10.131 10.076 10.017 9.955 9.889 9.819 9.747 9.671 9.593 9.511 9.428 9.342 9.254 9.165 9.074 8.981 8.886 8.791 8.694 8.596 8.498 8.399 8.299 8.198 8.098 7.997 7.895 7.794 7.693 7.591 7.49 7.389 7.288 7.188 7.088 6.988 6.889 6.791 6.693 6.596 6.499 6.403 6.308 6.214 6.12 6.028 5.936 5.845 5.755 5.666 5.578 5.491 5.404 5.319 5.235 5.152 5.069 4.988 4.908 4.829 4.751 4.673 4.597 4.522 4.448 4.375 4.303 4.232 4.162 4.092 4.024 3.957 3.891 3.826 3.762 3.698 3.636 3.575 3.514 3.455 3.396 3.339 3.282 3.226 3.171 3.117 3.064 3.011 2.959 2.909 2.859 2.81 2.761 2.714 2.667 2.621 2.576 2.531 2.487 2.444 2.402 2.36 2.319 2.279 2.239 2.2 2.162 2.125 2.088 2.051 2.015 1.98 1.946 1.912 1.878 1.846 1.813 1.782 1.75 1.72 1.69 1.66 1.631

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.214" PeakHeight="110.0" Num="3" Error="0.0">
-30.368 12.957 -3.078
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.214" EndFrequency="10.4" PeakHeight="342.016" Num="5" zHalfNm="221.753" Error="3.574">
-215.694 -16.097 10.285 -5.48 1.818
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.848" Depth="0.122"/>
<TopsideChapman PeakHeight="342.016" PeakDensity="1341935.5" PeakScaleHeight="87.569" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
