<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 11:40:00.000"
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="15.0">
<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: F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.10.16 (289) 11:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202628910161140009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.910" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.699" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="411.840" 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="3.029" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.188" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="310.331" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="235.710" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.970" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="97.543" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="34.158" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="55.752" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="137.360" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.080" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="96">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.556 311.111 311.667 312.222 312.778 313.333 313.889 314.444 315.000 316.667 318.333 320.000 320.000 315.000 325.000 320.000 325.000 325.000 325.000 325.000 325.000 327.500 330.000 330.000 330.000 330.000 332.500 335.000 335.000 335.000 336.334 337.668 339.002 340.336 341.670 343.004 344.338 345.672 347.006 348.340 349.674 351.008 352.342 353.675 355.009 356.343 357.677 359.011 360.345 361.679 363.013 364.347 365.681 367.015 368.349 369.683 371.017 372.351 373.685 375.019 376.353 377.687 379.021 380.355 381.689 383.023 384.357 385.691 387.025 388.359 389.692 391.026 392.360 393.694 395.028 396.362 397.696 399.030 400.364 401.421 402.612 403.962 405.506 407.290 409.374 411.840 414.805 418.436 422.987 430.000 435.000 450.000 465.000 495.000 551.081
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 63 0 0 69 0 0 66 69 54 0 66 69 69 72 0 69 0 69 0 0 72 0 0 72 75 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 48 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 2.734375 -0.390625 2.734375 -1.171875 1.171875 -0.390625 -2.734375 1.953125 0.390625 -0.390625 -2.734375 1.953125 -2.734375 0.390625 -2.734375 0.390625 1.171875 2.734375 -2.734375 -2.734375 0.390625 1.171875 -2.734375 -1.953125 -2.734375 2.734375 -1.171875 -1.953125 -1.953125 2.734375 -2.734375 -0.390625 2.734375 -2.734375 1.953125 0.390625 0.390625 -1.953125 0.390625 -2.734375 -2.734375 -0.390625 -2.734375 -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" >
89.541 90.0 95.0 100.0 105.0 110.0 113.087 115.0 116.174 119.261 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 310.331 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.036 2.622 2.931 3.029 2.907 2.907 2.907 3.029 3.062 3.29 3.512 3.725 3.928 4.123 4.31 4.493 4.671 4.847 5.021 5.194 5.367 5.54 5.715 5.891 6.07 6.251 6.436 6.624 6.818 7.016 7.22 7.43 7.646 7.87 8.102 8.341 8.588 8.842 9.101 9.361 9.617 9.861 10.084 10.275 10.422 10.515 10.55 10.55 10.543 10.52 10.483 10.431 10.367 10.291 10.204 10.107 10.001 9.887 9.765 9.636 9.502 9.362 9.217 9.069 8.917 8.763 8.606 8.448 8.288 8.127 7.966 7.804 7.643 7.482 7.321 7.162 7.004 6.847 6.692 6.538 6.387 6.237 6.089 5.944 5.8 5.66 5.521 5.385 5.251 5.12 4.992 4.866 4.742 4.621 4.503 4.387 4.274 4.163 4.055 3.949 3.845 3.744 3.646 3.549 3.455 3.364 3.274 3.187 3.102 3.019 2.938 2.859 2.782 2.707 2.634 2.563 2.494 2.426 2.36 2.296 2.234 2.173 2.114 2.056 2.0 1.946 1.893 1.841 1.791 1.742 1.694 1.648 1.602 1.558 1.516 1.474 1.434 1.394 1.356 1.319 1.283 1.247 1.213 1.18 1.147 1.116 1.085 1.055 1.026 0.998 0.97 0.943 0.917 0.892 0.868 0.844 0.82 0.798 0.776 0.754 0.734 0.713 0.694 0.675 0.656 0.638 0.62 0.603 0.586 0.57 0.554 0.539 0.524 0.51 0.496 0.482 0.469 0.456 0.443 0.431 0.419 0.407 0.396 0.385 0.375 0.364

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.029" PeakHeight="110.0" Num="3" Error="0.0">
-30.219 12.738 -2.978
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.029" EndFrequency="10.55" PeakHeight="310.331" Num="5" zHalfNm="235.71" Error="2.835">
-158.3 -46.968 12.72 3.129 -1.651
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.261" Depth="0.122"/>
<TopsideChapman PeakHeight="310.331" PeakDensity="1380924.4" PeakScaleHeight="55.752" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
