<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 16:40:00.000"
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="18.0">
<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" >
2026.10.13 (286) 16:40:00</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">
FF202628610131640009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.353" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.829" 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="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="557.003" 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="3.256" 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="/" />
<Modeled Name="foF1p" Val="4.298" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="403.315" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="266.648" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.650" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="179.949" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.675" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="100.302" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="221.400" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.440" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="97">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 335.000 335.000 340.000 340.000 345.000 345.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 370.000 370.000 370.000 370.000 372.500 375.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 395.000 398.115 401.231 404.346 407.462 410.577 413.693 416.808 419.923 423.039 426.154 429.270 432.385 435.501 438.616 441.732 444.847 447.962 451.078 454.193 457.309 460.424 463.540 466.655 469.770 472.886 476.001 479.117 482.232 485.348 488.463 491.578 494.694 497.809 500.925 504.040 507.156 510.271 513.387 516.502 519.617 522.733 525.848 528.964 532.079 535.195 538.310 541.425 544.541 547.656 550.772 553.887 557.003 560.118 563.233 570.000 575.000 580.000 590.000 600.000 610.000 620.000 635.000 660.000 685.000 720.000 769.427
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 63 63 63 66 66 66 69 69 66 69 66 69 66 63 69 0 66 66 60 0 63 63 66 63 63 0 0 0 63 60 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
</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 -2.734375 -0.390625 -0.390625 0.390625 -0.390625 1.953125 -0.390625 -2.734375 -1.171875 -0.390625 0.390625 2.734375 1.953125 -0.390625 -2.734375 -2.734375 2.734375 -1.171875 2.734375 -2.734375 0.390625 1.953125 -1.953125 -0.390625 -2.734375 -2.734375 2.734375 -2.734375 -1.171875 -0.390625 1.171875 -1.171875 1.171875 0.390625 -1.171875 -1.953125 -0.390625 -0.390625 -1.171875 -0.390625 0.390625 1.953125 -0.390625 -1.953125 -0.390625 2.734375 0.390625 0.390625 -2.734375 -1.953125 2.734375 -1.171875 -1.953125 -1.171875 2.734375 -0.390625 2.734375 2.734375 1.171875 -1.953125 -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" >
89.504 90.0 95.0 100.0 105.0 110.0 112.107 114.213 115.0 116.32 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 403.315 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.19 2.818 3.15 3.256 3.134 3.134 3.18 3.256 3.367 3.514 3.657 3.798 3.937 4.076 4.213 4.35 4.486 4.622 4.759 4.895 5.031 5.168 5.305 5.442 5.58 5.718 5.856 5.995 6.135 6.275 6.415 6.556 6.698 6.84 6.982 7.125 7.269 7.413 7.557 7.701 7.846 7.99 8.135 8.279 8.424 8.567 8.71 8.853 8.994 9.133 9.27 9.405 9.537 9.665 9.789 9.908 10.02 10.125 10.221 10.307 10.382 10.445 10.494 10.528 10.546 10.55 10.55 10.545 10.536 10.522 10.504 10.481 10.454 10.423 10.388 10.349 10.306 10.261 10.211 10.159 10.104 10.046 9.985 9.922 9.856 9.788 9.718 9.646 9.572 9.497 9.419 9.341 9.26 9.179 9.097 9.013 8.928 8.843 8.757 8.67 8.582 8.494 8.406 8.317 8.227 8.138 8.048 7.959 7.869 7.779 7.689 7.6 7.51 7.421 7.332 7.243 7.155 7.067 6.979 6.892 6.805 6.719 6.633 6.548 6.463 6.379 6.296 6.213 6.131 6.049 5.969 5.889 5.809 5.73 5.653 5.575 5.499 5.423 5.348 5.274 5.201 5.128 5.056 4.985 4.915 4.845 4.777 4.709 4.641 4.575 4.51 4.445 4.381 4.318 4.255 4.193 4.133 4.072 4.013 3.954 3.897 3.839 3.783 3.727 3.673 3.618 3.565 3.512 3.46 3.409 3.358 3.308 3.259 3.21 3.162 3.115 3.069 3.023 2.977 2.933 2.889 2.845 2.802 2.76 2.719 2.678

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.256" PeakHeight="110.0" Num="3" Error="0.0">
-30.401 13.004 -3.099
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.256" EndFrequency="10.55" PeakHeight="403.315" Num="5" zHalfNm="266.648" Error="1.934">
-257.659 -43.749 15.751 -1.601 0.263
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.32" Depth="0.122"/>
<TopsideChapman PeakHeight="403.315" PeakDensity="1380924.4" PeakScaleHeight="100.302" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
