<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 12:50:00.000"
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) 12:50:00</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">
FF202628910161250009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.796" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.850" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="435.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.266" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.303" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="328.466" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="247.812" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.074" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="107.281" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.370" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="61.326" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="147.600" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 325.000 320.000 320.000 322.500 325.000 322.500 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 326.216 327.432 328.649 329.865 331.081 332.297 333.514 334.730 335.946 337.162 338.378 339.595 340.811 342.027 343.243 344.459 345.676 346.892 348.108 349.324 350.541 351.757 352.973 354.189 355.405 356.622 357.838 359.054 360.270 361.486 362.703 363.919 365.135 366.351 367.568 368.784 370.000 371.216 372.432 373.649 374.865 376.081 377.297 378.514 379.730 380.946 382.162 383.378 384.595 385.811 387.027 388.243 389.459 390.676 391.892 393.108 394.324 395.541 396.757 397.973 399.189 400.405 401.622 402.838 404.054 405.270 406.486 407.703 408.919 410.135 411.351 412.568 413.784 415.000 416.250 417.500 418.750 420.000 425.000 430.000 430.000 435.000 435.000 435.000 440.000 443.257 447.081 451.635 457.150 463.964 472.600 483.900 499.321 521.621 556.726
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 0 63 66 66 63 63 0 66 57 57 66 66 66 69 69 69 66 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 42 0 0 0 57 60 51 54 48 48 57 57 42 48 54 57 54 63 51 54 51 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 -1.953125 0.390625 0.390625 2.734375 1.953125 2.734375 0.390625 -2.734375 -0.390625 -0.390625 0.390625 1.953125 1.171875 -1.953125 -0.390625 -1.171875 1.953125 -1.171875 -1.171875 -1.953125 -2.734375 2.734375 0.390625 -0.390625 1.953125 1.171875 -1.171875 1.171875 2.734375 -1.953125 0.390625 1.953125 1.171875 -1.953125 1.953125 0.390625 -1.953125 1.953125 -0.390625 2.734375 1.171875 2.734375 2.734375 1.953125 0.390625 -2.734375 -2.734375 -0.390625 -0.390625 1.953125 1.171875 -1.953125 -0.390625 0.390625 -1.171875 0.390625 1.953125 -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
</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" >
89.502 90.0 95.0 100.0 105.0 110.0 112.066 114.131 115.0 116.197 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 328.466 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.197 2.827 3.16 3.266 3.144 3.144 3.195 3.266 3.44 3.664 3.877 4.08 4.274 4.462 4.644 4.822 4.997 5.17 5.342 5.514 5.685 5.858 6.032 6.208 6.386 6.567 6.751 6.939 7.131 7.329 7.532 7.741 7.957 8.18 8.411 8.65 8.897 9.154 9.419 9.69 9.967 10.245 10.52 10.784 11.029 11.249 11.434 11.58 11.682 11.739 11.75 11.749 11.737 11.711 11.671 11.619 11.555 11.48 11.394 11.3 11.196 11.084 10.965 10.84 10.708 10.571 10.43 10.284 10.134 9.981 9.826 9.668 9.508 9.347 9.185 9.022 8.858 8.695 8.531 8.368 8.206 8.044 7.884 7.724 7.566 7.409 7.254 7.101 6.949 6.8 6.652 6.506 6.363 6.222 6.083 5.946 5.811 5.679 5.549 5.422 5.297 5.174 5.053 4.935 4.819 4.706 4.594 4.486 4.379 4.274 4.172 4.072 3.974 3.879 3.785 3.693 3.604 3.516 3.431 3.347 3.265 3.186 3.108 3.031 2.957 2.884 2.813 2.744 2.676 2.61 2.546 2.483 2.421 2.361 2.303 2.246 2.19 2.136 2.082 2.031 1.98 1.931 1.883 1.836 1.79 1.745 1.702 1.659 1.618 1.577 1.538 1.5 1.462 1.425 1.39 1.355 1.321 1.288 1.256 1.224 1.194 1.164 1.135 1.106 1.078 1.051 1.025 0.999 0.974 0.95 0.926 0.903 0.88 0.858 0.836 0.815 0.795 0.775 0.755 0.736 0.718 0.7 0.682 0.665 0.648 0.632

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.266" PeakHeight="110.0" Num="3" Error="0.0">
-30.409 13.016 -3.105
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.266" EndFrequency="11.75" PeakHeight="328.466" Num="5" zHalfNm="247.812" Error="2.772">
-177.208 -48.418 10.087 5.236 -1.966
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.197" Depth="0.122"/>
<TopsideChapman PeakHeight="328.466" PeakDensity="1712934.2" PeakScaleHeight="61.326" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
