<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 13:40:00.000"
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" >
2026.10.16 (289) 13:40:00</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">
FF202628910161340009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.632" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.400" 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="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="11.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="490.000" 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="3.360" 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="/" />
<Modeled Name="foF1p" Val="4.347" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="352.373" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="254.139" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.317" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="127.859" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.276" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.873" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="172.070" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.180" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.000 310.000 310.000 310.000 311.250 312.500 313.750 315.000 315.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 342.500 345.000 346.250 347.500 348.750 350.000 351.918 353.836 355.753 357.671 359.589 361.507 363.425 365.342 367.260 369.178 371.096 373.014 374.932 376.849 378.767 380.685 382.603 384.521 386.438 388.356 390.274 392.192 394.110 396.027 397.945 399.863 401.781 403.699 405.616 407.534 409.452 411.370 413.288 415.205 417.123 419.041 420.959 422.877 424.795 426.712 428.630 430.548 432.466 434.384 436.301 438.219 440.137 442.055 443.973 445.890 447.808 449.726 451.644 453.562 455.479 457.397 459.315 461.233 463.151 465.068 466.986 468.904 470.822 472.740 474.658 476.575 478.493 480.411 482.329 484.247 486.164 488.082 490.000 490.000 495.000 505.000 510.000 525.000 534.747 548.579 569.747 606.190
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 69 69 69 54 0 63 0 66 60 63 69 66 69 63 63 66 66 63 60 63 66 66 69 60 66 0 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 51 51 54 54 54 54 54 54 54 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 -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 -0.390625 1.171875 -0.390625 2.734375 -2.734375 -0.390625 -1.953125 -1.953125 -2.734375 -1.953125 1.953125 1.953125 2.734375 -1.171875 -2.734375 1.953125 1.953125 -1.953125 -0.390625 0.390625 1.953125 2.734375 0.390625 2.734375 0.390625 2.734375 -2.734375 -1.171875 -0.390625 -2.734375 -1.953125 2.734375 -1.171875 -1.171875 -2.734375 -1.953125 2.734375 2.734375 2.734375 -1.953125 0.390625 -0.390625 -1.953125 2.734375 1.171875 -0.390625 1.171875 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -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" >
89.488 90.0 95.0 100.0 105.0 110.0 111.673 113.345 115.0 115.018 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 352.373 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.26 2.908 3.251 3.36 3.237 3.237 3.359 3.36 3.564 3.753 3.932 4.105 4.274 4.439 4.603 4.766 4.928 5.09 5.251 5.414 5.577 5.74 5.905 6.071 6.238 6.407 6.578 6.75 6.924 7.1 7.278 7.458 7.64 7.824 8.011 8.2 8.391 8.585 8.781 8.979 9.179 9.381 9.585 9.789 9.995 10.199 10.402 10.601 10.793 10.976 11.145 11.293 11.414 11.5 11.545 11.55 11.549 11.538 11.516 11.486 11.446 11.397 11.34 11.275 11.203 11.125 11.039 10.948 10.852 10.75 10.644 10.534 10.42 10.302 10.181 10.057 9.931 9.802 9.672 9.54 9.406 9.272 9.136 9.0 8.863 8.726 8.589 8.452 8.315 8.178 8.042 7.906 7.772 7.638 7.505 7.372 7.241 7.112 6.983 6.856 6.73 6.605 6.482 6.361 6.241 6.122 6.006 5.89 5.777 5.665 5.555 5.446 5.339 5.234 5.13 5.028 4.928 4.829 4.732 4.637 4.543 4.451 4.361 4.272 4.185 4.1 4.016 3.933 3.852 3.773 3.695 3.618 3.543 3.47 3.398 3.327 3.258 3.19 3.123 3.058 2.994 2.931 2.869 2.809 2.75 2.692 2.635 2.58 2.525 2.472 2.419 2.368 2.318 2.269 2.221 2.174 2.128 2.082 2.038 1.995 1.952 1.911 1.87 1.83 1.791 1.753 1.716 1.679 1.643 1.608 1.574 1.54 1.507 1.475 1.444 1.413 1.382 1.353 1.324 1.296 1.268 1.241 1.214 1.188 1.163 1.138

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.36" PeakHeight="110.0" Num="3" Error="0.0">
-30.479 13.119 -3.152
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.36" EndFrequency="11.55" PeakHeight="352.373" Num="5" zHalfNm="254.139" Error="1.713">
-198.438 -56.044 17.618 -0.691 0.2
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.018" Depth="0.123"/>
<TopsideChapman PeakHeight="352.373" PeakDensity="1655117.9" PeakScaleHeight="71.873" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
