<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 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="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" >
2026.10.17 (290) 13:40:00</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">
FF202629010171340009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.630" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.377" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.900" 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="11.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" 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="3.360" 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="4.347" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="359.921" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.895" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.317" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="136.274" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.755" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.403" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="174.530" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.340" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="115">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 325.000 325.000 325.000 325.000 330.000 328.333 326.667 325.000 325.000 330.000 330.000 332.500 335.000 335.000 335.000 330.000 330.000 335.000 336.667 338.333 340.000 340.000 340.000 340.000 341.753 343.506 345.260 347.013 348.766 350.519 352.273 354.026 355.779 357.532 359.286 361.039 362.792 364.545 366.299 368.052 369.805 371.558 373.312 375.065 376.818 378.571 380.325 382.078 383.831 385.584 387.338 389.091 390.844 392.597 394.351 396.104 397.857 399.610 401.364 403.117 404.870 406.623 408.377 410.130 411.883 413.636 415.390 417.143 418.896 420.649 422.403 424.156 425.909 427.662 429.416 431.169 432.922 434.675 436.429 438.182 439.935 441.688 443.442 445.195 446.948 448.701 450.455 452.208 453.961 455.714 457.468 459.221 460.974 462.727 464.481 466.234 467.987 469.740 471.494 473.247 475.000 480.000 480.000 490.000 495.000 505.000 510.000 518.539 528.949 541.922 558.539 580.582 611.231 656.747
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 57 57 60 48 0 0 54 48 51 51 0 0 0 48 57 54 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 0 0 0 0 0 0 0 0 0 63 63 63 60 60 54 57 63 57 51 0 51 48 45
</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 -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 2.734375 2.734375 2.734375 2.734375 -0.390625 2.734375 -1.953125 1.953125 -1.171875 -2.734375 1.953125 -0.390625 -2.734375 -0.390625 1.171875 -1.953125 -0.390625 -2.734375 -1.953125 1.953125 -2.734375 -1.171875 1.171875 1.171875 -1.953125 1.953125 0.390625 -0.390625 -1.171875 -1.953125 2.734375 0.390625 -0.390625 1.953125 -1.953125 2.734375 1.953125 1.171875 0.390625 -1.171875 -1.953125 1.171875 -2.734375 0.390625 -0.390625 2.734375 2.734375 0.390625 2.734375 -1.171875 2.734375 2.734375 -1.171875 -1.171875 0.390625 1.953125 -1.171875 2.734375 -2.734375 1.171875 -0.390625 2.734375 1.953125 -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
</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 95.0 100.0 105.0 110.0 111.675 113.35 115.0 115.025 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 359.921 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.26 2.908 3.251 3.36 3.237 3.237 3.358 3.36 3.547 3.728 3.904 4.074 4.24 4.402 4.561 4.718 4.873 5.028 5.182 5.336 5.49 5.645 5.8 5.958 6.116 6.277 6.44 6.606 6.774 6.945 7.12 7.298 7.48 7.667 7.857 8.052 8.252 8.456 8.664 8.877 9.093 9.312 9.533 9.754 9.974 10.189 10.398 10.597 10.783 10.954 11.107 11.24 11.35 11.437 11.5 11.538 11.55 11.55 11.545 11.531 11.509 11.478 11.44 11.394 11.341 11.281 11.215 11.143 11.065 10.983 10.895 10.803 10.707 10.607 10.503 10.396 10.286 10.173 10.058 9.941 9.822 9.701 9.579 9.456 9.331 9.206 9.079 8.953 8.826 8.698 8.571 8.443 8.316 8.189 8.063 7.937 7.812 7.687 7.563 7.44 7.318 7.196 7.076 6.957 6.839 6.722 6.607 6.493 6.38 6.268 6.158 6.049 5.941 5.835 5.73 5.627 5.525 5.424 5.325 5.227 5.131 5.036 4.943 4.851 4.761 4.672 4.584 4.498 4.414 4.33 4.248 4.168 4.089 4.011 3.934 3.859 3.785 3.712 3.641 3.571 3.502 3.435 3.368 3.303 3.239 3.176 3.114 3.054 2.994 2.936 2.879 2.822 2.767 2.713 2.66 2.608 2.557 2.507 2.457 2.409 2.362 2.315 2.27 2.225 2.181 2.138 2.096 2.054 2.014 1.974 1.935 1.897 1.859 1.822 1.786 1.751 1.716 1.682 1.649 1.616 1.584 1.553 1.522 1.491 1.462 1.433

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.36" PeakHeight="110.0" Num="3" Error="0.0">
-30.479 13.119 -3.152
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.36" EndFrequency="11.55" PeakHeight="359.921" Num="5" zHalfNm="257.895" Error="2.9">
-212.189 -43.617 7.519 4.856 -1.465
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.025" Depth="0.123"/>
<TopsideChapman PeakHeight="359.921" PeakDensity="1655117.9" PeakScaleHeight="77.403" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
