<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-09 -282 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="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" >
2026.10.09 (282) 19:20:00</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">
FF202628210091920009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.461" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.051" 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="11.700" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="547.372" 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="2.441" 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="391.802" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="278.687" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.437" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="155.216" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.463" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.413" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="177.940" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.520" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="112">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 337.500 340.000 340.000 340.000 342.500 345.000 345.000 347.628 350.256 352.885 355.513 358.141 360.769 363.397 366.026 368.654 371.282 373.910 376.538 379.167 381.795 384.423 387.051 389.679 392.308 394.936 397.564 400.192 402.821 405.449 408.077 410.705 413.333 415.962 418.590 421.218 423.846 426.474 429.103 431.731 434.359 436.987 439.615 442.244 444.872 447.500 450.128 452.756 455.385 458.013 460.641 463.269 465.897 468.526 471.154 473.782 476.410 479.038 481.667 484.295 486.923 489.551 492.179 494.808 497.436 500.064 502.692 505.321 507.949 510.577 513.205 515.833 518.462 521.090 523.718 526.346 528.974 531.603 534.231 536.859 539.487 542.115 544.744 547.372 550.000 557.808 567.538 580.000 596.533 619.519 653.656 709.654
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 0 78 81 78 78 75 75 72 72 72 69 66 63 72 69 66 72 72 0 69 75 75 0 78 78 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 54 54 57 51 54 51 45 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 -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 -2.734375 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 1.171875 2.734375 -1.171875 -0.390625 1.171875 -1.953125 -2.734375 -0.390625 -1.953125 -1.953125 -1.953125 -0.390625 1.171875 -1.953125 1.171875 -1.171875 1.171875 -0.390625 -2.734375 2.734375 2.734375 -2.734375 1.171875 2.734375 1.953125 1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -1.171875 0.390625 2.734375 -2.734375 0.390625 2.734375 2.734375 2.734375 0.390625 -2.734375 1.953125 -2.734375 2.734375 -1.953125 -1.953125 -1.171875 -1.171875 1.953125 -0.390625 -1.953125 0.390625 2.734375 2.734375 2.734375 1.953125 1.171875 -1.953125 1.171875 -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" >
89.652 90.0 95.0 100.0 105.0 110.0 115.0 115.878 120.0 121.757 125.0 127.635 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 391.802 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.639 2.114 2.362 2.441 2.351 2.316 2.316 2.316 2.385 2.441 2.521 2.685 2.847 3.009 3.173 3.339 3.509 3.682 3.858 4.038 4.222 4.408 4.597 4.788 4.981 5.176 5.371 5.568 5.765 5.962 6.16 6.357 6.554 6.751 6.947 7.143 7.338 7.532 7.726 7.919 8.111 8.303 8.494 8.683 8.872 9.059 9.245 9.43 9.612 9.792 9.969 10.143 10.313 10.477 10.634 10.783 10.923 11.049 11.161 11.254 11.327 11.375 11.398 11.4 11.398 11.389 11.372 11.348 11.317 11.279 11.235 11.184 11.128 11.067 11.0 10.928 10.852 10.772 10.687 10.599 10.508 10.413 10.315 10.215 10.112 10.007 9.899 9.79 9.68 9.568 9.454 9.34 9.224 9.108 8.991 8.874 8.756 8.638 8.52 8.402 8.284 8.166 8.049 7.932 7.815 7.699 7.583 7.468 7.354 7.241 7.128 7.017 6.906 6.796 6.687 6.58 6.473 6.368 6.263 6.16 6.058 5.957 5.858 5.759 5.662 5.566 5.471 5.378 5.286 5.195 5.105 5.017 4.929 4.843 4.759 4.675 4.593 4.512 4.433 4.354 4.277 4.201 4.126 4.052 3.98 3.909 3.838 3.769 3.701 3.635 3.569 3.504 3.441 3.378 3.317 3.257 3.197 3.139 3.082 3.025 2.97 2.916 2.862 2.81 2.758 2.707 2.658 2.609 2.561 2.513 2.467 2.422 2.377 2.333 2.29 2.247 2.206 2.165 2.125 2.085 2.047 2.009 1.971 1.935 1.899 1.863

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.441" PeakHeight="110.0" Num="3" Error="0.0">
-29.648 11.917 -2.617
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.441" EndFrequency="11.4" PeakHeight="391.802" Num="5" zHalfNm="278.687" Error="2.947">
-243.158 -35.496 19.106 -6.308 1.689
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="17.635" Depth="0.125"/>
<TopsideChapman PeakHeight="391.802" PeakDensity="1612407.0" PeakScaleHeight="82.413" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
