<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-10 -283 13:40:00.000"
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 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" >
2026.10.10 (283) 13:40:00</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">
FF202628310101340009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.681" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.435" 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="11.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="10.950" 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="3.362" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.348" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="348.467" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.539" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.316" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="119.017" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.227" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="68.390" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="164.310" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.140" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 340.000 337.500 335.000 335.000 335.000 335.000 335.000 335.000 340.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 341.731 343.462 345.192 346.923 348.654 350.385 352.115 353.846 355.577 357.308 359.038 360.769 362.500 364.231 365.962 367.692 369.423 371.154 372.885 374.615 376.346 378.077 379.808 381.538 383.269 385.000 386.731 388.462 390.192 391.923 393.654 395.385 397.115 398.846 400.577 402.308 404.038 405.769 407.500 409.231 410.962 412.692 414.423 416.154 417.885 419.615 421.346 423.077 424.808 426.538 428.269 430.000 431.731 433.462 435.192 436.923 438.654 440.385 442.115 443.846 445.577 447.308 449.038 450.769 452.500 454.231 455.962 457.692 459.423 461.154 462.885 464.615 466.346 468.077 469.808 471.538 473.269 475.000 475.000 480.000 485.803 493.208 502.985 516.491 536.361 568.482 629.230
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 60 0 69 69 54 54 60 63 69 63 60 63 69 72 69 69 72 72 66 66 69 69 66 66 63 60 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 45 57 54 54 57 54 48 54 42 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 0.390625 0.390625 0.390625 -1.171875 -1.171875 2.734375 -0.390625 -1.953125 -1.171875 2.734375 2.734375 1.953125 2.734375 0.390625 2.734375 -0.390625 -1.171875 0.390625 -0.390625 -0.390625 1.171875 2.734375 0.390625 1.953125 -0.390625 -2.734375 -1.953125 1.171875 1.953125 1.171875 -1.953125 2.734375 -1.171875 1.171875 -1.953125 -0.390625 -2.734375 1.171875 1.171875 2.734375 -2.734375 0.390625 -0.390625 2.734375 -2.734375 2.734375 0.390625 -1.953125 -1.953125 0.390625 -2.734375 0.390625 -1.953125 1.953125 -2.734375 1.171875 -1.953125 2.734375 -2.734375 -2.734375 -2.734375 2.734375 -1.953125 -1.171875 -1.171875 1.171875 -1.953125 0.390625 0.390625 -1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -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" >
89.488 90.0 95.0 100.0 105.0 110.0 111.664 113.328 114.992 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 348.467 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.262 2.91 3.252 3.362 3.239 3.239 3.362 3.362 3.565 3.746 3.915 4.075 4.23 4.381 4.53 4.677 4.823 4.969 5.114 5.261 5.408 5.557 5.707 5.859 6.013 6.17 6.329 6.491 6.656 6.825 6.998 7.174 7.355 7.54 7.73 7.925 8.125 8.33 8.54 8.755 8.975 9.199 9.427 9.656 9.886 10.114 10.336 10.549 10.747 10.926 11.08 11.203 11.291 11.34 11.35 11.349 11.34 11.32 11.289 11.247 11.197 11.137 11.07 10.994 10.911 10.822 10.726 10.624 10.517 10.405 10.289 10.169 10.045 9.918 9.788 9.656 9.522 9.385 9.248 9.109 8.969 8.828 8.687 8.545 8.403 8.262 8.12 7.979 7.839 7.699 7.561 7.423 7.286 7.15 7.016 6.883 6.751 6.621 6.493 6.366 6.24 6.117 5.994 5.874 5.756 5.639 5.524 5.411 5.299 5.19 5.082 4.976 4.872 4.77 4.669 4.57 4.474 4.378 4.285 4.194 4.104 4.015 3.929 3.844 3.761 3.68 3.6 3.521 3.445 3.37 3.296 3.224 3.153 3.084 3.016 2.95 2.885 2.821 2.759 2.698 2.638 2.58 2.523 2.467 2.412 2.358 2.306 2.255 2.204 2.155 2.107 2.06 2.014 1.969 1.925 1.882 1.84 1.799 1.759 1.719 1.681 1.643 1.606 1.57 1.535 1.501 1.467 1.434 1.402 1.37 1.339 1.309 1.28 1.251 1.223 1.195 1.169 1.142 1.117 1.091 1.067 1.043 1.019 0.996 0.974 0.952

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.362" PeakHeight="110.0" Num="3" Error="0.0">
-30.48 13.121 -3.153
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.362" EndFrequency="11.35" PeakHeight="348.467" Num="5" zHalfNm="257.539" Error="3.969">
-191.373 -55.945 10.683 3.658 -0.498
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.992" Depth="0.123"/>
<TopsideChapman PeakHeight="348.467" PeakDensity="1598294.0" PeakScaleHeight="68.39" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
