<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 19:50:00.000"
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 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) 19:50:00</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">
FF202628610131950009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.569" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.316" 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="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="11.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="510.000" 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="2.117" 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="/" />
<URSI ID="92" Val="378.273" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="281.346" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.471" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="135.118" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.126" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.755" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="154.460" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.470" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="121">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 300.000 300.000 302.500 305.000 307.500 310.000 310.000 312.500 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 325.000 325.000 325.000 327.500 330.000 330.000 330.000 330.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 347.037 349.074 351.111 353.148 355.185 357.222 359.259 361.296 363.333 365.370 367.407 369.444 371.481 373.519 375.556 377.593 379.630 381.667 383.704 385.741 387.778 389.815 391.852 393.889 395.926 397.963 400.000 402.037 404.074 406.111 408.148 410.185 412.222 414.259 416.296 418.333 420.370 422.407 424.444 426.481 428.519 430.556 432.593 434.630 436.667 438.704 440.741 442.778 444.815 446.852 448.889 450.926 452.963 455.000 457.037 459.074 461.111 463.148 465.185 467.222 469.259 471.296 473.333 475.370 477.407 479.444 481.481 483.519 485.556 487.593 489.630 491.667 493.704 495.741 497.778 499.815 501.852 503.889 505.926 507.963 510.000 515.000 525.000 535.000 550.000 565.291 583.817 606.726 635.781
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 75 69 0 0 0 75 78 66 72 75 75 78 75 78 78 78 72 78 78 69 72 75 75 72 72 57 66 72 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 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 57 57 54 57 57 0 0 57 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 -2.734375 -1.953125 -2.734375 -2.734375 -2.734375 2.734375 -0.390625 1.171875 -2.734375 -1.953125 1.953125 1.953125 1.171875 2.734375 -0.390625 -2.734375 -0.390625 -0.390625 -1.171875 -2.734375 2.734375 1.171875 1.171875 1.171875 2.734375 1.953125 -0.390625 1.953125 2.734375 -2.734375 -1.171875 -0.390625 2.734375 1.171875 -2.734375 2.734375 2.734375 2.734375 -2.734375 -0.390625 -1.953125 -2.734375 -2.734375 -1.953125 -1.953125 2.734375 2.734375 -0.390625 -0.390625 -1.953125 1.171875 -1.953125 1.953125 -0.390625 -2.734375 -0.390625 1.953125 -1.953125 2.734375 -1.171875 -1.171875 -2.734375 2.734375 -1.171875 1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 0.390625 -0.390625 -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" >
89.729 90.0 95.0 100.0 105.0 110.0 115.0 117.571 120.0 125.0 125.142 130.0 132.713 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 378.273 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.223 1.419 1.833 2.049 2.117 2.061 1.987 1.987 1.987 1.987 2.07 2.117 2.198 2.372 2.546 2.722 2.902 3.087 3.276 3.469 3.668 3.87 4.076 4.286 4.499 4.714 4.932 5.151 5.371 5.593 5.815 6.038 6.262 6.486 6.71 6.934 7.159 7.384 7.609 7.833 8.058 8.283 8.508 8.733 8.957 9.181 9.404 9.626 9.846 10.064 10.279 10.491 10.696 10.894 11.083 11.259 11.418 11.555 11.667 11.747 11.792 11.8 11.799 11.79 11.769 11.739 11.698 11.649 11.59 11.524 11.45 11.368 11.28 11.186 11.085 10.98 10.87 10.755 10.636 10.513 10.387 10.259 10.127 9.994 9.858 9.721 9.582 9.442 9.301 9.159 9.017 8.875 8.733 8.59 8.448 8.307 8.166 8.025 7.886 7.747 7.609 7.473 7.337 7.203 7.071 6.939 6.809 6.681 6.554 6.429 6.305 6.183 6.063 5.944 5.828 5.713 5.599 5.488 5.378 5.27 5.164 5.059 4.956 4.855 4.756 4.659 4.563 4.469 4.377 4.286 4.197 4.11 4.024 3.94 3.857 3.777 3.697 3.619 3.543 3.468 3.395 3.323 3.253 3.183 3.116 3.049 2.984 2.921 2.858 2.797 2.737 2.679 2.621 2.565 2.51 2.456 2.403 2.352 2.301 2.252 2.203 2.155 2.109 2.063 2.019 1.975 1.933 1.891 1.85 1.81 1.771 1.732 1.695 1.658 1.622 1.587 1.552 1.519 1.486 1.453 1.422 1.391 1.361 1.331 1.302 1.274 1.246

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.117" PeakHeight="110.0" Num="3" Error="0.0">
-29.239 11.349 -2.381
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.117" EndFrequency="11.8" PeakHeight="378.273" Num="5" zHalfNm="281.346" Error="2.26">
-224.51 -36.106 19.857 -6.267 1.466
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="22.713" Depth="0.13"/>
<TopsideChapman PeakHeight="378.273" PeakDensity="1727543.4" PeakScaleHeight="70.755" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
