<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 18:20:00.000"
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="18.0">
<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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.10.13 (286) 18:20:00</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">
FF202628610131820009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.367" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.391" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="596.795" 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="2.858" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="393.311" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="272.102" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.234" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="159.684" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.268" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="85.074" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="196.700" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="107">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 315.000 317.500 320.000 315.000 315.000 317.500 320.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 353.205 356.410 359.615 362.821 366.026 369.231 372.436 375.641 378.846 382.051 385.256 388.462 391.667 394.872 398.077 401.282 404.487 407.692 410.897 414.103 417.308 420.513 423.718 426.923 430.128 433.333 436.538 439.744 442.949 446.154 449.359 452.564 455.769 458.974 462.179 465.385 468.590 471.795 475.000 478.205 481.410 484.615 487.821 491.026 494.231 497.436 500.641 503.846 507.051 510.256 513.462 516.667 519.872 523.077 526.282 529.487 532.692 535.897 539.103 542.308 545.513 548.718 551.923 555.128 558.333 561.538 564.744 567.949 571.154 574.359 577.564 580.769 583.974 587.179 590.385 593.590 596.795 600.000 620.000 647.488 681.805
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 69 0 60 66 57 0 63 66 69 69 63 66 69 69 66 69 69 66 69 69 66 69 72 63 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 48 51 51 48
</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 1.171875 -0.390625 1.171875 -1.953125 -1.171875 2.734375 0.390625 1.171875 -0.390625 2.734375 1.171875 1.953125 -0.390625 -0.390625 2.734375 1.953125 -1.953125 2.734375 1.171875 -2.734375 -0.390625 1.953125 -1.953125 -2.734375 -1.953125 -2.734375 2.734375 -2.734375 -0.390625 1.953125 -1.171875 -2.734375 1.171875 -1.953125 -1.171875 1.953125 2.734375 -1.171875 -0.390625 -1.171875 -0.390625 2.734375 1.171875 -1.953125 -0.390625 0.390625 -2.734375 2.734375 2.734375 -0.390625 0.390625 -1.953125 -1.953125 1.171875 1.953125 0.390625 -1.953125 2.734375 -1.171875 0.390625 1.953125 1.953125 0.390625 1.171875 -1.171875 1.171875 -2.734375 -1.171875 2.734375 -1.171875 1.171875 0.390625 -2.734375 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" >
89.57 90.0 95.0 100.0 105.0 110.0 113.86 115.0 117.719 120.0 121.579 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 393.311 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.921 2.474 2.765 2.858 2.736 2.736 2.736 2.808 2.858 2.989 3.158 3.315 3.467 3.619 3.771 3.926 4.083 4.243 4.407 4.574 4.744 4.917 5.092 5.269 5.446 5.624 5.801 5.978 6.154 6.328 6.501 6.672 6.841 7.008 7.174 7.337 7.499 7.659 7.818 7.975 8.131 8.286 8.44 8.592 8.744 8.895 9.046 9.195 9.345 9.494 9.642 9.79 9.938 10.085 10.231 10.375 10.517 10.654 10.785 10.907 11.012 11.093 11.141 11.15 11.15 11.143 11.13 11.11 11.083 11.05 11.011 10.966 10.916 10.86 10.8 10.735 10.666 10.592 10.515 10.434 10.35 10.263 10.173 10.08 9.984 9.887 9.787 9.686 9.582 9.478 9.372 9.264 9.156 9.047 8.937 8.826 8.715 8.604 8.492 8.38 8.268 8.157 8.045 7.933 7.822 7.711 7.601 7.491 7.382 7.273 7.165 7.058 6.951 6.846 6.741 6.637 6.534 6.432 6.331 6.231 6.132 6.035 5.938 5.842 5.747 5.654 5.562 5.47 5.38 5.291 5.204 5.117 5.031 4.947 4.864 4.782 4.701 4.621 4.543 4.465 4.389 4.314 4.24 4.167 4.095 4.024 3.955 3.886 3.819 3.752 3.687 3.622 3.559 3.497 3.435 3.375 3.316 3.257 3.2 3.144 3.088 3.033 2.98 2.927 2.875 2.824 2.774 2.724 2.676 2.628 2.581 2.535 2.49 2.446 2.402 2.359 2.317 2.275 2.234 2.194 2.155 2.116 2.078 2.041 2.004 1.968

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.858" PeakHeight="110.0" Num="3" Error="0.0">
-30.073 12.523 -2.88
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.858" EndFrequency="11.15" PeakHeight="393.311" Num="5" zHalfNm="272.102" Error="4.486">
-237.744 -57.241 31.664 -12.351 3.94
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.579" Depth="0.122"/>
<TopsideChapman PeakHeight="393.311" PeakDensity="1542462.8" PeakScaleHeight="85.074" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
