<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 20:10:00.000"
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) 20:10:00</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">
FF202628610132010009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.595" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.751" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="1.836" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="378.313" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="286.943" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.445" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="129.026" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.709" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="67.036" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="144.780" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.500" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="123">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 305.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 341.867 343.735 345.602 347.470 349.337 351.205 353.072 354.940 356.807 358.675 360.542 362.410 364.277 366.145 368.012 369.880 371.747 373.614 375.482 377.349 379.217 381.084 382.952 384.819 386.687 388.554 390.422 392.289 394.157 396.024 397.892 399.759 401.627 403.494 405.361 407.229 409.096 410.964 412.831 414.699 416.566 418.434 420.301 422.169 424.036 425.904 427.771 429.639 431.506 433.373 435.241 437.108 438.976 440.843 442.711 444.578 446.446 448.313 450.181 452.048 453.916 455.783 457.651 459.518 461.386 463.253 465.120 466.988 468.855 470.723 472.590 474.458 476.325 478.193 480.060 481.928 483.795 485.663 487.530 489.398 491.265 493.133 495.000 500.000 505.000 515.000 525.000 535.000 546.716 560.372 576.492 595.810 619.381
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 75 75 78 75 66 0 0 78 78 75 72 75 75 78 78 78 81 78 78 81 81 75 75 78 75 75 72 75 75 0 0 63 0 0 0 0 0 0 0 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 57 60 60 57 60 0 60 57 0 0 54
</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 2.734375 -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 -0.390625 -0.390625 1.171875 -0.390625 -0.390625 2.734375 -1.953125 2.734375 -0.390625 -2.734375 0.390625 -1.953125 -1.953125 1.171875 -1.171875 -1.953125 0.390625 2.734375 -1.953125 -1.953125 1.953125 -2.734375 1.171875 -2.734375 2.734375 -0.390625 -1.171875 -0.390625 1.953125 -2.734375 -1.953125 1.953125 2.734375 1.953125 -2.734375 -0.390625 2.734375 0.390625 1.171875 0.390625 -1.953125 0.390625 1.171875 -1.953125 -1.953125 -1.171875 2.734375 -0.390625 2.734375 -2.734375 -1.171875 1.171875 -0.390625 -2.734375 2.734375 -2.734375 1.953125 -0.390625 -2.734375 -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
</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" >
89.81 90.0 95.0 100.0 105.0 110.0 115.0 119.141 120.0 125.0 128.282 130.0 135.0 137.423 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 378.313 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.216 1.229 1.59 1.777 1.836 1.796 1.7 1.7 1.7 1.7 1.726 1.8 1.836 1.921 2.088 2.257 2.431 2.611 2.796 2.988 3.186 3.39 3.599 3.813 4.031 4.253 4.478 4.706 4.936 5.168 5.402 5.637 5.874 6.112 6.35 6.59 6.83 7.071 7.313 7.555 7.798 8.041 8.285 8.528 8.772 9.015 9.258 9.5 9.74 9.977 10.212 10.441 10.664 10.879 11.083 11.272 11.443 11.59 11.709 11.794 11.841 11.85 11.849 11.839 11.816 11.782 11.737 11.682 11.617 11.544 11.462 11.372 11.275 11.171 11.061 10.946 10.825 10.7 10.571 10.437 10.301 10.162 10.02 9.876 9.73 9.582 9.434 9.284 9.134 8.983 8.832 8.681 8.531 8.38 8.231 8.082 7.934 7.786 7.641 7.496 7.352 7.21 7.07 6.931 6.794 6.658 6.525 6.393 6.263 6.135 6.008 5.884 5.761 5.641 5.523 5.406 5.292 5.179 5.068 4.96 4.853 4.748 4.646 4.545 4.446 4.349 4.254 4.161 4.069 3.979 3.892 3.806 3.721 3.639 3.558 3.478 3.401 3.325 3.25 3.178 3.106 3.037 2.968 2.901 2.836 2.772 2.709 2.648 2.588 2.53 2.472 2.416 2.361 2.308 2.255 2.204 2.154 2.105 2.057 2.01 1.964 1.919 1.876 1.833 1.791 1.75 1.71 1.671 1.633 1.595 1.559 1.523 1.488 1.454 1.421 1.388 1.356 1.325 1.295 1.265 1.236 1.208 1.18 1.153 1.127 1.101 1.075

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.836" PeakHeight="110.0" Num="3" Error="0.0">
-28.797 10.757 -2.15
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.836" EndFrequency="11.85" PeakHeight="378.313" Num="5" zHalfNm="286.943" Error="2.078">
-222.087 -32.665 18.51 -5.94 1.292
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="27.423" Depth="0.136"/>
<TopsideChapman PeakHeight="378.313" PeakDensity="1742214.6" PeakScaleHeight="67.036" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
