<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 19:10:00.000"
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) 19:10:00</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">
FF202628610131910009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.593" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.073" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.900" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="2.518" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="369.614" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="272.284" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.413" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="133.354" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.079" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.463" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="160.690" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.360" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="115">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 317.500 320.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 350.000 351.908 353.816 355.724 357.632 359.539 361.447 363.355 365.263 367.171 369.079 370.987 372.895 374.803 376.711 378.618 380.526 382.434 384.342 386.250 388.158 390.066 391.974 393.882 395.789 397.697 399.605 401.513 403.421 405.329 407.237 409.145 411.053 412.961 414.868 416.776 418.684 420.592 422.500 424.408 426.316 428.224 430.132 432.039 433.947 435.855 437.763 439.671 441.579 443.487 445.395 447.303 449.211 451.118 453.026 454.934 456.842 458.750 460.658 462.566 464.474 466.382 468.289 470.197 472.105 474.013 475.921 477.829 479.737 481.645 483.553 485.461 487.368 489.276 491.184 493.092 495.000 500.000 505.000 510.000 520.000 530.000 545.000 555.000 573.460 597.910 631.828
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 75 0 0 0 72 0 75 75 75 72 0 75 78 72 69 0 69 69 69 72 72 72 72 0 72 69 72 60 0 0 57 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 54 57 57 54 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 1.171875 2.734375 -0.390625 2.734375 -0.390625 -0.390625 1.953125 -0.390625 -1.171875 1.171875 0.390625 1.171875 -2.734375 -0.390625 -2.734375 1.171875 1.953125 1.171875 1.953125 1.953125 1.171875 -1.953125 1.953125 -0.390625 -2.734375 -1.953125 1.171875 -0.390625 -1.171875 2.734375 -2.734375 2.734375 2.734375 2.734375 2.734375 -1.953125 -0.390625 1.171875 -1.171875 2.734375 -1.171875 -0.390625 -1.171875 -2.734375 1.171875 2.734375 -0.390625 0.390625 -0.390625 1.171875 2.734375 -1.171875 -1.953125 -1.953125 -2.734375 1.953125 0.390625 -2.734375 -1.953125 1.171875 1.171875 -0.390625 -1.953125 -1.953125 -0.390625 1.953125 -0.390625 -1.171875 2.734375 -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
</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" >
89.636 90.0 95.0 100.0 105.0 110.0 115.0 115.492 120.0 120.983 125.0 126.475 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 369.614 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.23 1.691 2.18 2.436 2.518 2.415 2.394 2.394 2.394 2.485 2.518 2.649 2.835 3.019 3.204 3.388 3.573 3.759 3.945 4.132 4.32 4.508 4.698 4.888 5.08 5.273 5.466 5.662 5.858 6.055 6.254 6.454 6.656 6.858 7.063 7.269 7.476 7.684 7.894 8.105 8.318 8.532 8.746 8.962 9.178 9.394 9.61 9.825 10.037 10.247 10.452 10.651 10.841 11.019 11.182 11.325 11.442 11.53 11.584 11.6 11.6 11.594 11.577 11.55 11.513 11.468 11.414 11.352 11.282 11.205 11.121 11.032 10.936 10.836 10.73 10.62 10.506 10.388 10.267 10.143 10.016 9.887 9.756 9.623 9.489 9.353 9.216 9.079 8.941 8.803 8.664 8.525 8.387 8.249 8.111 7.974 7.838 7.702 7.568 7.434 7.301 7.17 7.04 6.911 6.784 6.658 6.533 6.41 6.289 6.169 6.05 5.934 5.819 5.705 5.594 5.484 5.376 5.269 5.164 5.061 4.96 4.86 4.762 4.665 4.571 4.478 4.386 4.296 4.208 4.122 4.037 3.953 3.872 3.791 3.713 3.635 3.56 3.485 3.412 3.341 3.271 3.202 3.135 3.069 3.004 2.941 2.879 2.818 2.758 2.7 2.643 2.587 2.532 2.478 2.425 2.374 2.323 2.273 2.225 2.177 2.131 2.085 2.041 1.997 1.955 1.913 1.872 1.832 1.792 1.754 1.716 1.679 1.643 1.608 1.574 1.54 1.507 1.474 1.443 1.412 1.381 1.351 1.322 1.294 1.266 1.239 1.212

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.518" PeakHeight="110.0" Num="3" Error="0.0">
-29.735 12.039 -2.668
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.518" EndFrequency="11.6" PeakHeight="369.614" Num="5" zHalfNm="272.284" Error="1.306">
-216.58 -42.512 18.816 -3.203 0.34
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="16.475" Depth="0.124"/>
<TopsideChapman PeakHeight="369.614" PeakDensity="1669478.9" PeakScaleHeight="71.463" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
