<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: 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" >
2026.11.02 (306) 18:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630611021840009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.545" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.536" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="490.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.709" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="378.616" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="274.503" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.887" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="143.794" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.080" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.911" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="161.680" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.640" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="152">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 282.500 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 286.438 287.877 289.315 290.753 292.192 293.630 295.068 296.507 297.945 299.384 300.822 302.260 303.699 305.137 306.575 308.014 309.452 310.890 312.329 313.767 315.205 316.644 318.082 319.521 320.959 322.397 323.836 325.274 326.712 328.151 329.589 331.027 332.466 333.904 335.342 336.781 338.219 339.658 341.096 342.534 343.973 345.411 346.849 348.288 349.726 351.164 352.603 354.041 355.479 356.918 358.356 359.795 361.233 362.671 364.110 365.548 366.986 368.425 369.863 371.301 372.740 374.178 375.616 377.055 378.493 379.932 381.370 382.808 384.247 385.685 387.123 388.562 390.000 390.000 390.000 391.000 392.000 393.000 394.000 395.000 400.000 400.000 405.000 405.000 410.000 410.000 410.000 410.000 412.500 415.000 417.500 420.000 420.000 420.000 425.000 425.000 428.000 431.000 434.000 437.000 440.000 445.000 445.000 445.000 445.000 445.000 450.000 450.000 455.000 460.000 460.000 465.000 465.000 470.000 475.000 475.000 480.000 485.000 485.000 490.000 490.000 495.000 499.235 503.872 508.970 514.603 520.858 527.847 535.704 544.603 554.766 566.482 580.138 596.258 615.575 639.146 668.549
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 48 51 60 51 0 51 54 60 0 0 0 0 51 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 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 0 0 0 0 0 0 0 0 0 72 45 69 57 0 51 57 0 66 0 66 0 0 66 66 0 0 0 0 60 51 0 60 60 57 60 57 60 60 57 57 60 60 57 63 57 57 60 63 63 60 63 63 60 57 57 54 54 54 54 54 54 51 48 0 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 0.390625 -1.953125 1.953125 -0.390625 1.953125 1.953125 0.390625 -1.953125 -1.171875 2.734375 -0.390625 -1.171875 -1.171875 -1.171875 2.734375 1.953125 2.734375 2.734375 2.734375 -0.390625 1.953125 0.390625 0.390625 1.953125 -2.734375 1.171875 1.171875 -1.171875 2.734375 -2.734375 -1.171875 2.734375 -1.953125 1.953125 1.953125 -1.171875 -1.171875 -0.390625 2.734375 -1.171875 1.171875 -1.171875 -0.390625 0.390625 1.171875 1.171875 -2.734375 -1.953125 -2.734375 2.734375 -0.390625 0.390625 1.171875 1.953125 -2.734375 2.734375 0.390625 -1.171875 2.734375 -2.734375 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -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 -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" >
89.598 90.0 95.0 100.0 105.0 110.0 114.561 115.0 119.121 120.0 123.682 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 378.616 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.82 2.345 2.621 2.709 2.586 2.586 2.586 2.61 2.709 2.752 2.91 3.061 3.209 3.356 3.504 3.654 3.806 3.961 4.12 4.283 4.451 4.623 4.8 4.982 5.169 5.362 5.56 5.764 5.972 6.185 6.403 6.626 6.852 7.082 7.315 7.551 7.789 8.028 8.268 8.509 8.75 8.989 9.227 9.463 9.696 9.924 10.148 10.366 10.576 10.779 10.972 11.153 11.322 11.476 11.613 11.732 11.831 11.909 11.963 11.993 12.0 12.0 11.992 11.976 11.95 11.917 11.875 11.826 11.77 11.707 11.637 11.562 11.481 11.394 11.303 11.207 11.107 11.003 10.896 10.785 10.671 10.555 10.436 10.314 10.191 10.066 9.94 9.812 9.684 9.554 9.424 9.293 9.162 9.03 8.899 8.767 8.636 8.505 8.375 8.245 8.115 7.987 7.859 7.732 7.605 7.48 7.356 7.233 7.111 6.991 6.872 6.753 6.637 6.521 6.407 6.295 6.183 6.074 5.965 5.858 5.753 5.649 5.547 5.446 5.346 5.248 5.152 5.057 4.963 4.871 4.78 4.691 4.603 4.517 4.432 4.349 4.267 4.186 4.107 4.029 3.952 3.877 3.803 3.73 3.659 3.588 3.52 3.452 3.385 3.32 3.256 3.193 3.131 3.071 3.011 2.953 2.896 2.839 2.784 2.73 2.677 2.625 2.573 2.523 2.474 2.425 2.378 2.331 2.286 2.241 2.197 2.154 2.112 2.07 2.03 1.99 1.951 1.912 1.875 1.838 1.802 1.766 1.731 1.697 1.664 1.631

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.709" PeakHeight="110.0" Num="3" Error="0.0">
-29.93 12.319 -2.791
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.709" EndFrequency="12.0" PeakHeight="378.616" Num="5" zHalfNm="274.503" Error="3.212">
-229.035 -32.072 5.671 -0.679 1.181
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.682" Depth="0.123"/>
<TopsideChapman PeakHeight="378.616" PeakDensity="1786600.5" PeakScaleHeight="77.911" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
