<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 16:00:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.10.11 (284) 16:00:00</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">
FF202628410111600009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.483" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.299" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.100" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" 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="3.343" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.339" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="392.614" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="286.954" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.324" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="140.927" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.455" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.921" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="191.310" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.170" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="123">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 11.65 11.7 11.75 11.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 335.000 335.000 340.000 340.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 391.447 392.895 394.342 395.789 397.237 398.684 400.132 401.579 403.026 404.474 405.921 407.368 408.816 410.263 411.711 413.158 414.605 416.053 417.500 418.947 420.395 421.842 423.289 424.737 426.184 427.632 429.079 430.526 431.974 433.421 434.868 436.316 437.763 439.211 440.658 442.105 443.553 445.000 446.447 447.895 449.342 450.789 452.237 453.684 455.132 456.579 458.026 459.474 460.921 462.368 463.816 465.263 466.711 468.158 469.605 471.053 472.500 473.947 475.395 476.842 478.289 479.737 481.184 482.632 484.079 485.526 486.974 488.421 489.868 491.316 492.763 494.211 495.658 497.105 498.553 500.000 505.000 505.000 510.000 520.000 520.000 523.647 527.708 532.256 537.385 543.215 549.898 557.638 566.706 577.477 590.479 606.487 626.678 652.940 688.493
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 57 63 57 60 63 57 63 54 60 57 0 60 60 60 63 60 63 60 60 63 63 69 66 66 69 63 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 60 60 57 54 51 57 57 60 57 57 57 51 54 54 54 54 54 51 48 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 -2.734375 0.390625 -0.390625 0.390625 -2.734375 -1.953125 -0.390625 -1.953125 -0.390625 2.734375 1.171875 2.734375 2.734375 1.171875 0.390625 1.953125 -0.390625 -1.953125 1.953125 0.390625 -1.953125 -1.953125 -1.171875 1.953125 0.390625 -2.734375 1.171875 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 0.390625 0.390625 0.390625 2.734375 -2.734375 1.953125 -1.171875 0.390625 1.171875 0.390625 -1.171875 -1.953125 1.953125 2.734375 1.171875 -0.390625 1.171875 0.390625 -1.171875 -0.390625 -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 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
</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" >
89.49 90.0 95.0 100.0 105.0 110.0 111.745 113.491 115.0 115.236 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 392.614 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.249 2.893 3.234 3.343 3.22 3.22 3.326 3.343 3.513 3.681 3.84 3.991 4.137 4.278 4.415 4.55 4.683 4.814 4.944 5.073 5.202 5.331 5.46 5.589 5.719 5.851 5.983 6.117 6.252 6.39 6.529 6.671 6.815 6.963 7.113 7.266 7.424 7.585 7.75 7.919 8.093 8.272 8.457 8.646 8.841 9.041 9.246 9.456 9.67 9.886 10.103 10.319 10.532 10.737 10.931 11.112 11.276 11.421 11.544 11.644 11.72 11.771 11.797 11.8 11.799 11.791 11.774 11.749 11.717 11.677 11.631 11.578 11.519 11.454 11.384 11.308 11.227 11.142 11.053 10.96 10.863 10.762 10.659 10.552 10.443 10.332 10.218 10.103 9.986 9.867 9.747 9.626 9.504 9.382 9.258 9.134 9.01 8.886 8.761 8.637 8.512 8.388 8.265 8.141 8.019 7.897 7.775 7.655 7.535 7.416 7.298 7.181 7.065 6.95 6.836 6.724 6.612 6.502 6.393 6.285 6.179 6.074 5.97 5.867 5.766 5.666 5.567 5.47 5.374 5.28 5.187 5.095 5.005 4.915 4.828 4.741 4.656 4.572 4.49 4.409 4.329 4.25 4.173 4.097 4.022 3.949 3.876 3.805 3.735 3.666 3.599 3.532 3.467 3.403 3.34 3.278 3.217 3.157 3.098 3.04 2.984 2.928 2.873 2.82 2.767 2.715 2.664 2.614 2.565 2.517 2.469 2.423 2.377 2.332 2.288 2.245 2.203 2.161 2.121 2.08 2.041 2.002 1.965 1.927 1.891 1.855

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.343" PeakHeight="110.0" Num="3" Error="0.0">
-30.467 13.101 -3.144
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.343" EndFrequency="11.8" PeakHeight="392.614" Num="5" zHalfNm="286.954" Error="2.828">
-231.506 -60.607 9.139 7.596 -2.0
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.236" Depth="0.123"/>
<TopsideChapman PeakHeight="392.614" PeakDensity="1727543.4" PeakScaleHeight="80.921" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
