<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 18:50:00.000"
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="12.0">
<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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.19 (292) 18:50:00</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">
FF202629210191850009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.493" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.551" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="9.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="496.389" 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="2.659" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="383.822" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.724" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.352" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="173.012" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.920" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="93.313" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="188.100" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.800" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="87">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 337.500 340.000 340.000 340.000 340.000 340.000 340.000 345.000 350.000 347.500 345.000 347.968 350.937 353.905 356.874 359.842 362.811 365.779 368.747 371.716 374.684 377.653 380.621 383.589 386.558 389.526 392.495 395.463 398.432 401.400 404.368 407.337 410.305 413.274 416.242 419.210 422.179 425.147 428.116 431.084 434.053 437.021 439.989 442.958 445.926 448.895 451.863 454.831 457.800 460.768 463.737 466.705 469.674 472.642 475.610 478.579 481.547 484.516 487.484 490.452 493.421 496.389 499.358 505.000 510.000 515.000 520.000 530.000 540.000 545.000 555.000 570.000 580.000 595.000 615.000 635.000 660.000 690.000 730.793
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 75 72 72 72 72 72 66 0 54 63 69 0 57 63 66 51 0 60 0 63 0 51 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
</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 -2.734375 -0.390625 2.734375 1.171875 2.734375 2.734375 -0.390625 1.171875 -0.390625 -2.734375 0.390625 -1.171875 1.953125 2.734375 -1.953125 0.390625 1.171875 -0.390625 -2.734375 -2.734375 -0.390625 -2.734375 -2.734375 0.390625 -0.390625 -2.734375 0.390625 1.953125 1.171875 1.953125 1.953125 -1.171875 2.734375 0.390625 -1.171875 -2.734375 -1.953125 2.734375 1.953125 -0.390625 -0.390625 1.953125 -0.390625 2.734375 -2.734375 -2.734375 0.390625 2.734375 -2.734375 1.171875 -0.390625 2.734375 -2.734375 1.171875 -1.953125 -0.390625 -2.734375 2.734375
</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" >
89.608 90.0 95.0 100.0 105.0 110.0 114.8 115.0 119.599 120.0 124.399 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 383.822 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.232 1.786 2.302 2.573 2.659 2.536 2.536 2.536 2.546 2.659 2.677 2.829 2.983 3.139 3.299 3.462 3.629 3.801 3.976 4.156 4.338 4.524 4.713 4.904 5.097 5.292 5.487 5.684 5.88 6.077 6.273 6.468 6.663 6.856 7.049 7.239 7.428 7.616 7.801 7.984 8.164 8.342 8.516 8.688 8.856 9.02 9.179 9.334 9.484 9.628 9.765 9.896 10.019 10.133 10.238 10.333 10.417 10.489 10.549 10.595 10.627 10.646 10.65 10.65 10.646 10.635 10.62 10.599 10.573 10.542 10.507 10.466 10.422 10.374 10.321 10.265 10.206 10.143 10.077 10.008 9.937 9.862 9.786 9.707 9.626 9.543 9.458 9.372 9.284 9.194 9.104 9.012 8.919 8.825 8.731 8.636 8.54 8.444 8.347 8.25 8.153 8.056 7.958 7.861 7.763 7.666 7.569 7.472 7.376 7.28 7.184 7.088 6.994 6.899 6.805 6.712 6.62 6.528 6.437 6.346 6.257 6.168 6.079 5.992 5.905 5.82 5.735 5.651 5.568 5.485 5.404 5.323 5.244 5.165 5.087 5.01 4.934 4.859 4.785 4.712 4.64 4.568 4.498 4.428 4.36 4.292 4.225 4.159 4.094 4.03 3.967 3.904 3.843 3.782 3.722 3.663 3.605 3.548 3.491 3.436 3.381 3.327 3.274 3.221 3.169 3.119 3.068 3.019 2.97 2.922 2.875 2.829 2.783 2.738 2.694 2.65 2.607 2.565 2.523 2.482 2.442 2.402 2.363 2.324 2.286 2.249 2.212

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.659" PeakHeight="110.0" Num="3" Error="0.0">
-29.88 12.247 -2.759
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.659" EndFrequency="10.65" PeakHeight="383.822" Num="5" zHalfNm="257.724" Error="2.232">
-251.526 -13.764 8.197 -3.167 0.837
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="14.399" Depth="0.123"/>
<TopsideChapman PeakHeight="383.822" PeakDensity="1407227.0" PeakScaleHeight="93.313" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
