<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 20:50:00.000"
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="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: 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" >
2026.10.16 (289) 20:50:00</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">
FF202628910162050009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.660" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.852" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.050" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" 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="1.021" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="379.211" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="309.689" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.245" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="101.531" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="37.335" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="51.266" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="111.570" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.480" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="132">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 315.909 316.818 317.727 318.636 319.545 320.455 321.364 322.273 323.182 324.091 325.000 325.000 325.000 325.000 326.500 328.000 329.500 331.000 332.500 334.000 335.500 337.000 338.500 340.000 340.000 341.111 342.222 343.333 344.444 345.556 346.667 347.778 348.889 350.000 350.000 350.000 350.000 350.000 350.000 350.000 351.563 353.125 354.688 356.250 357.813 359.375 360.938 362.500 364.063 365.625 367.188 368.750 370.313 371.875 373.438 375.000 376.563 378.125 379.688 381.250 382.813 384.375 385.938 387.500 389.063 390.625 392.188 393.750 395.313 396.875 398.438 400.000 401.563 403.125 404.688 406.250 407.813 409.375 410.938 412.500 414.063 415.625 417.188 418.750 420.313 421.875 423.438 425.000 426.563 428.125 429.688 431.250 432.813 434.375 435.938 437.500 439.063 440.625 442.188 443.750 445.313 446.875 448.438 450.000 451.563 453.125 454.688 456.250 457.813 459.375 460.938 462.500 464.063 465.625 467.188 468.750 470.313 471.875 473.438 475.000 480.000 484.646 489.836 495.673 502.284 509.836 518.544 528.696 540.684 555.054
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 63 0 51 0 0 66 0 51 0 0 0 78 0 0 0 0 0 0 0 57 0 66 63 0 0 60 0 0 0 0 0 66 0 69 66 69 0 69 0 0 0 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 51 0 54 51 48 45 45 45 0 45 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -2.734375 2.734375 -1.171875 1.953125 2.734375 1.953125 2.734375 1.171875 1.171875 -1.953125 -0.390625 2.734375 -0.390625 2.734375 -2.734375 -2.734375 -1.171875 -2.734375 2.734375 1.953125 0.390625 0.390625 0.390625 1.953125 2.734375 1.953125 0.390625 -1.953125 -1.953125 -2.734375 1.171875 2.734375 -2.734375 0.390625 2.734375 2.734375 -1.171875 0.390625 1.953125 -1.953125 -0.390625 1.171875 2.734375 -0.390625 -0.390625 2.734375 0.390625 -2.734375 -1.953125 -1.171875 1.953125 0.390625 -2.734375 -2.734375 -1.171875 2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.25 95.0 100.0 105.0 110.0 115.0 120.0 125.0 126.515 130.0 135.0 140.0 143.031 145.0 150.0 155.0 159.546 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 379.211 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.68 0.885 0.988 1.021 1.004 0.951 0.856 0.817 0.817 0.817 0.817 0.817 0.841 0.903 0.965 1.021 1.034 1.174 1.317 1.467 1.625 1.793 1.971 2.159 2.358 2.566 2.783 3.009 3.242 3.482 3.728 3.98 4.236 4.498 4.763 5.033 5.306 5.583 5.863 6.147 6.434 6.725 7.018 7.315 7.614 7.917 8.221 8.528 8.837 9.145 9.454 9.76 10.061 10.355 10.636 10.898 11.134 11.333 11.484 11.575 11.6 11.6 11.586 11.552 11.5 11.43 11.344 11.244 11.13 11.004 10.868 10.721 10.566 10.404 10.235 10.06 9.88 9.697 9.51 9.321 9.13 8.938 8.745 8.552 8.359 8.167 7.975 7.785 7.597 7.411 7.227 7.045 6.866 6.689 6.515 6.345 6.177 6.012 5.851 5.693 5.538 5.386 5.238 5.093 4.951 4.813 4.678 4.546 4.417 4.292 4.169 4.05 3.934 3.821 3.711 3.604 3.499 3.398 3.299 3.203 3.109 3.018 2.93 2.844 2.761 2.679 2.6 2.524 2.449 2.377 2.307 2.238 2.172 2.108 2.045 1.984 1.926 1.868 1.813 1.759 1.706 1.656 1.606 1.558 1.512 1.467 1.423 1.38 1.339 1.299 1.26 1.223 1.186 1.151 1.116 1.083 1.05 1.019 0.989 0.959 0.93 0.902 0.875 0.849 0.824 0.799 0.775 0.752 0.729 0.707 0.686 0.666 0.646 0.626 0.608 0.589 0.572 0.554 0.538 0.522 0.506 0.491 0.476 0.462 0.448 0.435

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.021" PeakHeight="110.0" Num="3" Error="0.0">
-26.596 8.096 -1.25
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.021" EndFrequency="11.6" PeakHeight="379.211" Num="5" zHalfNm="309.689" Error="2.241">
-201.541 -32.415 19.328 -6.644 1.607
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="49.546" Depth="0.204"/>
<TopsideChapman PeakHeight="379.211" PeakDensity="1669478.9" PeakScaleHeight="51.266" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
