<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 19:00:00.000"
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" >
2026.10.23 (296) 19:00:00</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">
FF202629610231900009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.631" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.964" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="11.500" 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="2.580" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="353.510" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="271.094" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.386" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="112.238" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.884" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="60.043" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="145.960" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 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 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 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 330.000 332.500 335.000 337.500 340.000 340.000 340.000 342.500 345.000 340.000 350.000 350.833 351.667 352.500 353.333 354.167 355.000 355.000 355.000 355.000 356.250 357.500 358.750 360.000 361.250 362.500 363.750 365.000 366.250 367.500 368.750 370.000 371.250 372.500 373.750 375.000 376.250 377.500 378.750 380.000 381.250 382.500 383.750 385.000 386.250 387.500 388.750 390.000 391.250 392.500 393.750 395.000 395.000 395.000 395.000 395.000 395.000 405.000 405.000 405.000 405.000 405.000 405.000 405.000 410.000 415.000 412.500 410.000 415.000 415.000 415.000 417.500 420.000 420.000 420.000 421.250 422.500 423.750 425.000 425.000 430.000 435.000 435.000 435.000 435.000 445.000 445.000 445.000 445.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 475.000 480.000 490.000 491.667 493.333 495.000 500.000 505.000 510.000 515.000 520.000 530.000 535.000 540.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 0 0 0 69 0 0 0 0 0 60 0 0 0 0 0 0 75 63 69 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 54 0 0 0 0 0 0 0 0 51 0 66 66 54 63 0 66 69 63 0 0 0 0 0 0 69 63 0 0 66 0 63 0 0 57 54 57 51 48 0 48 0 0 0 0 42 0 0 0 0 0 57 0 0 0 0 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 -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 -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 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" >
89.623 90.0 95.0 100.0 105.0 110.0 115.0 115.188 120.0 120.375 125.0 125.563 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 353.51 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.231 1.733 2.234 2.496 2.58 2.465 2.456 2.456 2.456 2.567 2.58 2.764 2.976 3.19 3.402 3.613 3.82 4.025 4.228 4.429 4.629 4.828 5.025 5.223 5.42 5.618 5.816 6.015 6.215 6.416 6.618 6.822 7.029 7.237 7.447 7.661 7.876 8.095 8.317 8.542 8.77 9.002 9.238 9.477 9.72 9.966 10.216 10.468 10.721 10.974 11.223 11.463 11.688 11.885 12.038 12.13 12.15 12.149 12.136 12.108 12.066 12.01 11.941 11.86 11.768 11.667 11.556 11.436 11.309 11.175 11.034 10.888 10.737 10.582 10.422 10.26 10.095 9.927 9.758 9.587 9.415 9.243 9.07 8.897 8.725 8.553 8.382 8.212 8.043 7.875 7.709 7.545 7.383 7.222 7.064 6.907 6.753 6.601 6.452 6.305 6.16 6.018 5.878 5.741 5.606 5.474 5.344 5.217 5.093 4.97 4.851 4.734 4.619 4.507 4.397 4.29 4.184 4.082 3.981 3.883 3.787 3.693 3.602 3.512 3.425 3.339 3.256 3.174 3.095 3.017 2.941 2.867 2.795 2.725 2.656 2.589 2.524 2.46 2.398 2.337 2.278 2.22 2.163 2.109 2.055 2.003 1.952 1.902 1.854 1.806 1.76 1.716 1.672 1.629 1.588 1.547 1.507 1.469 1.431 1.395 1.359 1.324 1.291 1.258 1.225 1.194 1.163 1.134 1.105 1.076 1.049 1.022 0.996 0.97 0.945 0.921 0.897 0.874 0.852 0.83 0.809 0.788 0.768 0.748 0.729 0.71 0.692

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.58" PeakHeight="110.0" Num="3" Error="0.0">
-29.8 12.132 -2.709
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.58" EndFrequency="12.15" PeakHeight="353.51" Num="5" zHalfNm="271.094" Error="2.394">
-192.632 -56.504 24.877 -3.426 -0.262
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="15.563" Depth="0.124"/>
<TopsideChapman PeakHeight="353.51" PeakDensity="1831544.6" PeakScaleHeight="60.043" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
