<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 13:10:00.000"
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) 13:10:00</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">
FF202628910161310009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.695" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.991" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.310" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.324" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="337.051" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="242.711" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.158" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="122.278" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.066" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="68.064" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="164.430" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.160" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="106">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 305.000 305.000 305.000 305.000 310.000 305.000 305.000 305.000 310.000 315.000 315.000 315.000 310.000 315.000 315.000 315.000 320.000 321.938 323.875 325.813 327.750 329.688 331.625 333.563 335.500 337.438 339.375 341.313 343.250 345.188 347.125 349.063 351.000 352.938 354.875 356.813 358.750 360.688 362.625 364.563 366.500 368.438 370.375 372.313 374.250 376.188 378.125 380.063 382.000 383.938 385.875 387.813 389.750 391.688 393.625 395.563 397.500 399.438 401.375 403.313 405.250 407.188 409.125 411.063 413.000 414.938 416.875 418.813 420.750 422.688 424.625 426.563 428.500 430.438 432.375 434.313 436.250 438.188 440.125 442.063 444.000 445.938 447.875 449.813 451.750 453.688 455.625 457.563 459.500 461.438 463.375 465.313 467.250 469.188 471.125 473.063 475.000 475.000 485.000 490.000 500.000 510.000 520.000 539.870 571.991
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 60 69 69 66 66 66 63 60 69 0 0 0 66 66 66 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 0 0 0 0 0 0 48 51 54 51 63 60 48 54 48
</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 2.734375 0.390625 2.734375 0.390625 -1.171875 0.390625 -2.734375 -1.171875 -1.171875 -1.953125 -1.171875 1.171875 1.953125 -2.734375 -1.171875 1.171875 -2.734375 -0.390625 -1.171875 -1.171875 -0.390625 1.171875 0.390625 1.953125 2.734375 2.734375 -1.953125 -0.390625 0.390625 2.734375 1.953125 -2.734375 2.734375 0.390625 -1.953125 1.171875 1.953125 -0.390625 -0.390625 0.390625 -1.171875 1.171875 1.171875 -1.953125 -1.171875 0.390625 -0.390625 -1.171875 2.734375 -1.953125 -1.953125 0.390625 0.390625 1.953125 0.390625 -2.734375 -1.171875 1.953125 2.734375 2.734375 1.953125 0.390625 2.734375 2.734375 2.734375 1.953125 -2.734375 0.390625 -2.734375 0.390625 0.390625 -1.953125 -2.734375 -0.390625 -1.171875 -1.171875 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -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" >
89.495 90.0 95.0 100.0 105.0 110.0 111.879 113.757 115.0 115.636 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 337.051 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.227 2.865 3.202 3.31 3.187 3.187 3.268 3.31 3.511 3.725 3.93 4.127 4.32 4.509 4.696 4.881 5.064 5.247 5.429 5.611 5.793 5.975 6.157 6.34 6.523 6.707 6.892 7.078 7.265 7.453 7.643 7.834 8.027 8.221 8.417 8.614 8.813 9.014 9.217 9.421 9.627 9.834 10.041 10.248 10.454 10.656 10.851 11.035 11.202 11.342 11.443 11.495 11.5 11.498 11.485 11.461 11.426 11.381 11.327 11.264 11.192 11.113 11.026 10.933 10.833 10.728 10.617 10.502 10.382 10.258 10.131 10.0 9.867 9.732 9.594 9.455 9.314 9.172 9.029 8.886 8.742 8.598 8.453 8.309 8.166 8.022 7.88 7.738 7.597 7.457 7.319 7.181 7.045 6.91 6.777 6.645 6.515 6.386 6.26 6.135 6.011 5.89 5.77 5.652 5.536 5.422 5.309 5.199 5.09 4.983 4.878 4.775 4.674 4.574 4.477 4.381 4.287 4.195 4.104 4.016 3.929 3.843 3.76 3.678 3.597 3.519 3.442 3.366 3.292 3.22 3.149 3.079 3.011 2.945 2.879 2.815 2.753 2.692 2.632 2.573 2.516 2.46 2.405 2.351 2.299 2.247 2.197 2.148 2.1 2.053 2.006 1.961 1.917 1.874 1.832 1.791 1.751 1.711 1.673 1.635 1.598 1.562 1.527 1.493 1.459 1.426 1.394 1.362 1.332 1.301 1.272 1.243 1.215 1.188 1.161 1.135 1.109 1.084 1.059 1.035 1.012 0.989 0.967 0.945 0.923 0.903

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.31" PeakHeight="110.0" Num="3" Error="0.0">
-30.443 13.065 -3.127
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.31" EndFrequency="11.5" PeakHeight="337.051" Num="5" zHalfNm="242.711" Error="1.166">
-187.094 -52.804 20.704 -2.553 0.332
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.636" Depth="0.123"/>
<TopsideChapman PeakHeight="337.051" PeakDensity="1640818.9" PeakScaleHeight="68.064" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
