<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 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="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) 18:30:00</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">
FF202628910161830009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.455" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.757" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="506.002" 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="2.795" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="397.539" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="268.645" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.276" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="176.823" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.767" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="96.495" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="197.780" 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="98">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 335.000 335.000 337.500 340.000 340.000 340.000 345.000 345.000 345.000 347.500 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 357.475 359.951 362.426 364.902 367.377 369.853 372.328 374.804 377.279 379.754 382.230 384.705 387.181 389.656 392.132 394.607 397.083 399.558 402.033 404.509 406.984 409.460 411.935 414.411 416.886 419.362 421.837 424.313 426.788 429.263 431.739 434.214 436.690 439.165 441.641 444.116 446.592 449.067 451.542 454.018 456.493 458.969 461.444 463.920 466.395 468.871 471.346 473.821 476.297 478.772 481.248 483.723 486.199 488.674 491.150 493.625 496.100 498.576 501.051 503.527 506.002 508.478 513.013 517.963 525.000 530.000 535.000 545.000 550.000 560.000 570.000 585.000 595.000 615.000 635.000 655.000 685.000 720.000 766.464
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 66 0 60 0 69 0 0 69 0 60 66 66 0 72 69 69 69 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
</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 -2.734375 0.390625 1.171875 0.390625 2.734375 0.390625 -1.953125 -2.734375 1.171875 -0.390625 0.390625 -1.953125 2.734375 -2.734375 -1.953125 0.390625 1.953125 -1.171875 1.171875 -1.953125 -2.734375 -1.953125 -1.171875 -1.953125 -2.734375 0.390625 1.171875 -0.390625 1.171875 -1.953125 -1.953125 -1.171875 -2.734375 2.734375 1.171875 1.953125 2.734375 1.171875 -1.953125 -1.953125 -0.390625 -1.953125 -2.734375 1.171875 -0.390625 -1.953125 -1.171875 -1.171875 -2.734375 1.171875 -0.390625 -2.734375 -1.171875 -1.171875 -0.390625 2.734375 2.734375 -2.734375 -0.390625 -1.171875 -1.171875 2.734375 -2.734375 2.734375 0.390625 2.734375 -1.953125 -1.953125
</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" >
89.581 90.0 95.0 100.0 105.0 110.0 114.155 115.0 118.309 120.0 122.464 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 397.539 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 1.878 2.42 2.704 2.795 2.673 2.673 2.673 2.723 2.795 2.868 3.016 3.169 3.325 3.483 3.644 3.805 3.968 4.131 4.295 4.46 4.625 4.791 4.958 5.126 5.295 5.464 5.635 5.806 5.979 6.152 6.327 6.503 6.68 6.857 7.036 7.215 7.395 7.576 7.756 7.937 8.117 8.297 8.475 8.652 8.827 8.999 9.168 9.334 9.495 9.65 9.8 9.944 10.08 10.208 10.327 10.436 10.536 10.624 10.701 10.766 10.818 10.858 10.885 10.898 10.9 10.899 10.894 10.883 10.866 10.845 10.819 10.788 10.753 10.713 10.669 10.622 10.57 10.515 10.457 10.396 10.331 10.264 10.194 10.121 10.046 9.969 9.889 9.808 9.725 9.64 9.554 9.467 9.378 9.288 9.197 9.104 9.012 8.918 8.824 8.729 8.633 8.538 8.442 8.346 8.249 8.153 8.056 7.96 7.864 7.768 7.672 7.576 7.481 7.386 7.291 7.197 7.104 7.011 6.918 6.826 6.735 6.644 6.554 6.465 6.376 6.289 6.202 6.115 6.03 5.945 5.861 5.778 5.696 5.614 5.534 5.454 5.375 5.297 5.22 5.144 5.068 4.994 4.92 4.847 4.775 4.704 4.634 4.565 4.497 4.429 4.363 4.297 4.232 4.168 4.105 4.042 3.981 3.92 3.86 3.801 3.743 3.685 3.629 3.573 3.518 3.463 3.41 3.357 3.305 3.254 3.203 3.153 3.104 3.056 3.008 2.961 2.915 2.87 2.825 2.78 2.737 2.694 2.652 2.61 2.569 2.528

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.795" PeakHeight="110.0" Num="3" Error="0.0">
-30.014 12.438 -2.843
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.795" EndFrequency="10.9" PeakHeight="397.539" Num="5" zHalfNm="268.645" Error="2.366">
-262.046 -20.02 7.313 0.306 -0.628
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="12.464" Depth="0.122"/>
<TopsideChapman PeakHeight="397.539" PeakDensity="1474069.5" PeakScaleHeight="96.495" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
