<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-09 -282 18:40:00.000"
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: 50% PACIFIC flags: F2o cusp not found, 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" >
2026.10.09 (282) 18:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628210091840009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.499" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.364" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.300" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="497.365" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.745" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="384.121" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="266.421" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.313" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="160.580" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.825" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="87.265" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="184.120" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="108">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.6 5.65 5.7 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 315.000 316.250 317.500 318.750 320.000 325.000 325.000 325.000 325.000 325.000 325.000 327.500 330.000 330.000 330.000 335.000 335.000 335.000 340.000 345.000 342.500 340.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 357.498 359.995 362.493 364.991 367.488 369.986 372.483 374.981 377.479 379.976 382.474 384.972 387.469 389.967 392.464 394.962 397.460 399.957 402.455 404.953 407.450 409.948 412.446 414.943 417.441 419.938 422.436 424.934 427.431 429.929 432.427 434.924 437.422 439.919 442.417 444.915 447.412 449.910 452.408 454.905 457.403 459.901 462.398 464.896 467.393 469.891 472.389 474.886 477.384 479.882 482.379 484.877 487.374 489.872 492.370 494.867 497.365 499.863 504.241 509.020 515.000 520.000 525.000 535.000 540.000 550.000 560.000 570.000 585.000 600.000 620.000 640.000 670.000 702.934
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 69 0 0 0 78 78 0 78 75 69 72 0 78 66 69 78 81 78 81 69 0 75 78 0 78 69 57 75 72 75 78 0 69 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
</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 -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 -0.390625 -0.390625 0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 0.390625 -1.953125 -1.171875 -1.953125 -2.734375 -1.171875 -1.171875 1.953125 2.734375 -1.953125 -0.390625 0.390625 1.953125 0.390625 1.953125 -1.953125 -2.734375 -1.171875 -1.171875 -1.171875 2.734375 -1.171875 -0.390625 -2.734375 0.390625 -2.734375 1.171875 2.734375 2.734375 2.734375 -2.734375 2.734375 0.390625 -2.734375 2.734375 1.953125 1.953125 1.171875 2.734375 -1.953125 -0.390625 2.734375 2.734375 0.390625 1.171875 1.953125 -1.953125 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" >
89.591 90.0 95.0 100.0 105.0 110.0 114.39 115.0 118.78 120.0 123.17 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 384.121 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 1.844 2.376 2.656 2.745 2.622 2.622 2.622 2.656 2.745 2.806 2.971 3.132 3.291 3.451 3.611 3.772 3.934 4.097 4.262 4.429 4.598 4.768 4.94 5.115 5.29 5.468 5.647 5.827 6.009 6.193 6.377 6.562 6.749 6.936 7.124 7.312 7.501 7.689 7.878 8.066 8.253 8.44 8.625 8.809 8.991 9.169 9.345 9.517 9.684 9.846 10.002 10.15 10.29 10.42 10.539 10.645 10.737 10.815 10.875 10.919 10.944 10.95 10.95 10.945 10.934 10.916 10.892 10.862 10.826 10.785 10.739 10.688 10.632 10.571 10.507 10.438 10.366 10.291 10.212 10.13 10.045 9.958 9.868 9.776 9.682 9.586 9.489 9.39 9.289 9.187 9.084 8.981 8.876 8.771 8.665 8.558 8.452 8.345 8.238 8.131 8.023 7.916 7.81 7.703 7.597 7.491 7.386 7.281 7.177 7.073 6.97 6.868 6.767 6.666 6.566 6.467 6.369 6.272 6.176 6.08 5.986 5.893 5.8 5.709 5.619 5.53 5.441 5.354 5.268 5.183 5.099 5.017 4.935 4.854 4.775 4.696 4.619 4.542 4.467 4.393 4.32 4.247 4.176 4.106 4.037 3.969 3.902 3.837 3.772 3.708 3.645 3.583 3.522 3.462 3.402 3.344 3.287 3.231 3.175 3.12 3.067 3.014 2.962 2.911 2.86 2.811 2.762 2.714 2.667 2.621 2.575 2.531 2.487 2.443 2.401 2.359 2.318 2.277 2.238 2.198 2.16 2.122 2.085 2.049 2.013 1.977

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.745" PeakHeight="110.0" Num="3" Error="0.0">
-29.965 12.369 -2.813
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.745" EndFrequency="10.95" PeakHeight="384.121" Num="5" zHalfNm="266.421" Error="2.295">
-242.104 -28.851 11.129 -1.626 0.501
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.17" Depth="0.123"/>
<TopsideChapman PeakHeight="384.121" PeakDensity="1487624.1" PeakScaleHeight="87.265" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
