<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 19:20:00.000"
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" >
2026.10.13 (286) 19:20:00</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">
FF202628610131920009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.572" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.968" 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="12.100" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" 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="2.432" 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="/" />
<URSI ID="92" Val="377.039" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="276.449" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.438" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="138.678" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.213" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.055" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="162.720" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.440" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="117">
<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 11.6 11.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 316.667 318.333 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 347.500 350.000 350.000 352.013 354.026 356.039 358.052 360.065 362.078 364.091 366.104 368.117 370.130 372.143 374.156 376.169 378.182 380.195 382.208 384.221 386.234 388.247 390.260 392.273 394.286 396.299 398.312 400.325 402.338 404.351 406.364 408.377 410.390 412.403 414.416 416.429 418.442 420.455 422.468 424.481 426.494 428.506 430.519 432.532 434.545 436.558 438.571 440.584 442.597 444.610 446.623 448.636 450.649 452.662 454.675 456.688 458.701 460.714 462.727 464.740 466.753 468.766 470.779 472.792 474.805 476.818 478.831 480.844 482.857 484.870 486.883 488.896 490.909 492.922 494.935 496.948 498.961 500.974 502.987 505.000 505.000 510.000 520.000 530.000 540.085 552.993 570.099 593.851 629.057 686.630
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 66 0 57 63 69 51 75 75 72 75 75 78 75 75 75 75 72 75 75 78 75 72 72 75 69 72 0 69 75 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 57 60 57 57 57 57 54 54 48 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 1.171875 -0.390625 1.953125 2.734375 1.171875 2.734375 0.390625 -2.734375 -0.390625 1.171875 1.953125 2.734375 1.953125 1.171875 0.390625 0.390625 0.390625 -1.171875 2.734375 -0.390625 -1.953125 -1.171875 1.953125 -2.734375 -1.171875 1.953125 -2.734375 2.734375 -1.171875 -1.953125 -1.953125 -1.953125 2.734375 -0.390625 2.734375 0.390625 2.734375 -1.171875 1.953125 -0.390625 -1.171875 2.734375 -1.953125 -2.734375 1.171875 2.734375 -0.390625 -2.734375 2.734375 -1.171875 0.390625 -2.734375 1.171875 1.171875 0.390625 1.171875 2.734375 0.390625 -2.734375 -2.734375 2.734375 2.734375 -0.390625 -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" >
89.654 90.0 95.0 100.0 105.0 110.0 115.0 115.924 120.0 121.848 125.0 127.772 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 377.039 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.633 2.106 2.353 2.432 2.343 2.307 2.307 2.307 2.374 2.432 2.51 2.684 2.859 3.035 3.213 3.392 3.573 3.756 3.941 4.127 4.315 4.505 4.697 4.89 5.085 5.282 5.48 5.679 5.88 6.082 6.286 6.491 6.697 6.905 7.114 7.324 7.535 7.748 7.961 8.176 8.391 8.606 8.822 9.038 9.254 9.469 9.683 9.895 10.104 10.308 10.508 10.7 10.883 11.054 11.211 11.349 11.465 11.556 11.617 11.647 11.65 11.648 11.637 11.616 11.587 11.548 11.501 11.446 11.384 11.314 11.239 11.157 11.069 10.976 10.878 10.776 10.669 10.559 10.445 10.328 10.208 10.086 9.961 9.835 9.706 9.576 9.445 9.313 9.18 9.047 8.913 8.779 8.644 8.51 8.376 8.242 8.109 7.976 7.844 7.713 7.583 7.453 7.325 7.198 7.072 6.947 6.823 6.701 6.58 6.461 6.343 6.226 6.111 5.997 5.885 5.775 5.666 5.559 5.453 5.349 5.246 5.145 5.046 4.948 4.852 4.757 4.664 4.573 4.483 4.395 4.308 4.223 4.139 4.056 3.976 3.896 3.818 3.742 3.667 3.593 3.52 3.449 3.38 3.311 3.244 3.178 3.114 3.051 2.989 2.928 2.868 2.809 2.752 2.696 2.64 2.586 2.533 2.481 2.43 2.38 2.332 2.284 2.237 2.19 2.145 2.101 2.058 2.015 1.974 1.933 1.893 1.854 1.815 1.778 1.741 1.705 1.67 1.635 1.601 1.568 1.535 1.504 1.472 1.442 1.412 1.383

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.432" PeakHeight="110.0" Num="3" Error="0.0">
-29.638 11.903 -2.611
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.432" EndFrequency="11.65" PeakHeight="377.039" Num="5" zHalfNm="276.449" Error="1.499">
-225.152 -38.405 17.159 -3.355 0.486
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="17.772" Depth="0.125"/>
<TopsideChapman PeakHeight="377.039" PeakDensity="1683902.0" PeakScaleHeight="74.055" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
