<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 19:00:00.000"
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) 19:00:00</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">
FF202628610131900009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.573" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.102" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.597" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="376.652" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="274.100" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.384" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="141.258" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.287" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="76.397" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="166.620" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.450" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="120">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 316.667 318.333 320.000 320.000 322.500 325.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 337.500 340.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 351.908 353.816 355.724 357.632 359.539 361.447 363.355 365.263 367.171 369.079 370.987 372.895 374.803 376.711 378.618 380.526 382.434 384.342 386.250 388.158 390.066 391.974 393.882 395.789 397.697 399.605 401.513 403.421 405.329 407.237 409.145 411.053 412.961 414.868 416.776 418.684 420.592 422.500 424.408 426.316 428.224 430.132 432.039 433.947 435.855 437.763 439.671 441.579 443.487 445.395 447.303 449.211 451.118 453.026 454.934 456.842 458.750 460.658 462.566 464.474 466.382 468.289 470.197 472.105 474.013 475.921 477.829 479.737 481.645 483.553 485.461 487.368 489.276 491.184 493.092 495.000 500.000 505.000 505.000 515.000 522.649 531.939 543.460 558.128 577.434 603.992 642.832 705.037
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 66 0 72 72 72 69 72 75 75 72 72 75 72 0 66 60 0 69 69 0 72 72 72 75 75 0 0 0 0 48 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 51 54 57 57 54 57 57 57 54 54 42 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 0.390625 -1.953125 -0.390625 -2.734375 -2.734375 -0.390625 -1.953125 1.953125 -2.734375 2.734375 0.390625 -2.734375 -1.171875 1.953125 -0.390625 -2.734375 0.390625 -2.734375 1.171875 -0.390625 -1.953125 1.171875 -1.171875 -2.734375 -0.390625 -1.953125 0.390625 -1.953125 -1.953125 -1.953125 0.390625 -0.390625 1.953125 -0.390625 -2.734375 -1.171875 -2.734375 1.171875 -2.734375 -1.171875 -1.171875 -1.953125 -1.953125 2.734375 1.953125 1.171875 1.953125 0.390625 -2.734375 -2.734375 0.390625 -1.171875 1.171875 1.953125 -0.390625 2.734375 -2.734375 -1.171875 -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
</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" >
89.62 90.0 95.0 100.0 105.0 110.0 115.0 115.102 120.0 120.203 125.0 125.305 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 376.652 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.232 1.744 2.248 2.513 2.597 2.478 2.473 2.473 2.473 2.59 2.597 2.755 2.929 3.106 3.284 3.464 3.644 3.825 4.006 4.187 4.369 4.551 4.734 4.918 5.103 5.29 5.478 5.667 5.858 6.051 6.246 6.443 6.642 6.843 7.046 7.252 7.46 7.67 7.882 8.096 8.312 8.53 8.749 8.968 9.188 9.408 9.627 9.844 10.058 10.267 10.47 10.666 10.851 11.025 11.184 11.326 11.448 11.549 11.625 11.675 11.698 11.7 11.698 11.687 11.666 11.637 11.6 11.555 11.502 11.443 11.377 11.304 11.226 11.142 11.053 10.959 10.861 10.759 10.653 10.543 10.431 10.316 10.198 10.078 9.956 9.832 9.706 9.579 9.452 9.323 9.193 9.063 8.933 8.802 8.671 8.541 8.41 8.28 8.15 8.021 7.892 7.765 7.637 7.511 7.386 7.262 7.139 7.017 6.896 6.777 6.658 6.542 6.426 6.312 6.199 6.088 5.978 5.869 5.762 5.657 5.553 5.45 5.349 5.25 5.152 5.055 4.96 4.867 4.775 4.684 4.595 4.508 4.421 4.337 4.253 4.172 4.091 4.012 3.935 3.858 3.783 3.71 3.637 3.566 3.497 3.428 3.361 3.295 3.23 3.167 3.104 3.043 2.983 2.924 2.866 2.809 2.754 2.699 2.646 2.593 2.541 2.491 2.441 2.393 2.345 2.298 2.252 2.207 2.163 2.12 2.078 2.036 1.995 1.955 1.916 1.878 1.84 1.803 1.767 1.731 1.697 1.662 1.629 1.596 1.564 1.533 1.502

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.597" PeakHeight="110.0" Num="3" Error="0.0">
-29.817 12.157 -2.72
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.597" EndFrequency="11.7" PeakHeight="376.652" Num="5" zHalfNm="274.1" Error="1.917">
-227.447 -36.266 13.471 -0.567 -0.538
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="15.305" Depth="0.124"/>
<TopsideChapman PeakHeight="376.652" PeakDensity="1698387.1" PeakScaleHeight="76.397" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
