<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 18:30:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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) 18:30:00</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">
FF202629710241830009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.539" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.323" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="435.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="435.000" 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="10.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" 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="2.783" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="366.025" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="249.475" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.277" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="159.021" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.027" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.871" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="174.690" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.720" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="43">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
435.000 435.000 435.000 437.500 440.000 440.000 442.500 445.000 447.500 450.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 460.000 465.000 470.000 470.000 475.000 475.000 480.000 485.000 490.000 495.000 495.000 500.000 505.000 510.000 525.000 525.000 530.000 540.000 550.000 560.000 570.000 585.000 600.000 610.000 640.000 665.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 0 57 0 51 54 0 54 48 60 51 60 63 63 66 0 0 0 51 57 0 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 45 39
</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 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 1.171875 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" >
89.584 90.0 95.0 100.0 105.0 110.0 114.213 115.0 118.427 120.0 122.64 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 366.025 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 1.87 2.409 2.693 2.783 2.661 2.661 2.661 2.707 2.783 2.865 3.035 3.206 3.38 3.56 3.745 3.938 4.138 4.346 4.561 4.783 5.01 5.241 5.475 5.711 5.947 6.182 6.416 6.648 6.878 7.104 7.328 7.548 7.765 7.979 8.189 8.396 8.6 8.801 8.999 9.193 9.384 9.572 9.755 9.935 10.111 10.281 10.446 10.605 10.757 10.9 11.034 11.157 11.266 11.361 11.438 11.496 11.534 11.55 11.55 11.548 11.538 11.52 11.496 11.465 11.428 11.385 11.335 11.281 11.221 11.156 11.086 11.012 10.934 10.852 10.766 10.677 10.585 10.49 10.392 10.292 10.189 10.085 9.978 9.87 9.761 9.65 9.538 9.425 9.311 9.197 9.082 8.966 8.85 8.734 8.618 8.502 8.386 8.27 8.154 8.039 7.924 7.81 7.696 7.583 7.471 7.359 7.248 7.138 7.029 6.921 6.813 6.707 6.602 6.497 6.394 6.292 6.191 6.091 5.993 5.895 5.799 5.704 5.61 5.517 5.425 5.335 5.245 5.157 5.071 4.985 4.901 4.817 4.735 4.655 4.575 4.496 4.419 4.343 4.268 4.194 4.121 4.05 3.979 3.91 3.842 3.775 3.709 3.643 3.579 3.516 3.455 3.394 3.334 3.275 3.217 3.16 3.104 3.049 2.994 2.941 2.889 2.837 2.787 2.737 2.688 2.64 2.593 2.546 2.501 2.456 2.412 2.368 2.326 2.284 2.243 2.203 2.163 2.124 2.086 2.048 2.011 1.975 1.939 1.904 1.87 1.836

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.783" PeakHeight="110.0" Num="3" Error="0.0">
-30.002 12.422 -2.836
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.783" EndFrequency="11.55" PeakHeight="366.025" Num="5" zHalfNm="249.475" Error="2.927">
-232.237 -19.34 12.863 -6.672 2.001
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="12.64" Depth="0.122"/>
<TopsideChapman PeakHeight="366.025" PeakDensity="1655117.9" PeakScaleHeight="84.871" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
