<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 11:30:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.16 (289) 11:30:00</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">
FF202628910161130009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.887" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.313" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="295.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="295.000" 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="9.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="406.878" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.984" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.166" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="312.751" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="229.794" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.972" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="110.937" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="37.157" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="62.345" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="140.410" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.350" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="95">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
295.000 295.000 297.500 300.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 305.000 310.000 310.000 307.500 305.000 310.000 310.000 310.000 310.000 315.000 315.000 310.000 310.000 320.000 320.000 315.000 316.614 318.229 319.843 321.458 323.072 324.687 326.301 327.916 329.530 331.145 332.759 334.374 335.988 337.603 339.217 340.832 342.446 344.061 345.675 347.290 348.904 350.519 352.133 353.748 355.362 356.977 358.591 360.206 361.820 363.435 365.049 366.664 368.278 369.893 371.507 373.122 374.736 376.351 377.965 379.580 381.194 382.809 384.423 386.038 387.652 389.267 390.881 392.496 394.110 395.725 397.339 398.954 400.568 402.183 403.797 406.878 410.350 414.292 418.807 425.000 430.000 435.000 445.000 455.000 470.000 490.000 510.000 544.834
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 54 0 57 63 0 60 57 63 0 63 63 54 57 0 63 66 66 66 63 66 63 66 54 57 60 66 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -0.390625 -0.390625 -2.734375 -0.390625 0.390625 -2.734375 -0.390625 -2.734375 1.953125 -1.171875 1.953125 -1.171875 -2.734375 -2.734375 1.953125 -0.390625 -2.734375 2.734375 -0.390625 0.390625 1.171875 0.390625 -0.390625 -1.171875 -1.171875 1.953125 2.734375 -0.390625 0.390625 -1.953125 2.734375 1.953125 0.390625 -1.953125 -1.171875 -1.171875 -2.734375 -0.390625 1.953125 -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" >
89.548 90.0 95.0 100.0 105.0 110.0 113.289 115.0 116.579 119.868 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 312.751 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.006 2.583 2.887 2.984 2.862 2.862 2.862 2.984 2.99 3.208 3.429 3.645 3.855 4.059 4.258 4.453 4.644 4.834 5.023 5.211 5.4 5.59 5.781 5.975 6.172 6.371 6.575 6.783 6.995 7.212 7.434 7.661 7.893 8.13 8.371 8.614 8.857 9.099 9.335 9.561 9.773 9.965 10.133 10.273 10.382 10.456 10.494 10.5 10.499 10.486 10.462 10.426 10.379 10.322 10.256 10.181 10.097 10.006 9.908 9.804 9.694 9.578 9.458 9.334 9.206 9.075 8.941 8.805 8.667 8.526 8.385 8.243 8.1 7.956 7.812 7.668 7.525 7.382 7.24 7.098 6.957 6.818 6.68 6.543 6.407 6.273 6.141 6.01 5.881 5.754 5.629 5.506 5.384 5.265 5.147 5.032 4.919 4.807 4.698 4.591 4.485 4.382 4.281 4.181 4.084 3.989 3.895 3.804 3.714 3.627 3.541 3.457 3.375 3.295 3.216 3.139 3.064 2.99 2.919 2.848 2.78 2.713 2.647 2.583 2.521 2.46 2.4 2.342 2.285 2.229 2.175 2.122 2.07 2.02 1.97 1.922 1.875 1.829 1.785 1.741 1.698 1.656 1.616 1.576 1.538 1.5 1.463 1.427 1.392 1.358 1.324 1.292 1.26 1.229 1.199 1.169 1.14 1.112 1.085 1.058 1.032 1.006 0.982 0.957 0.934 0.911 0.888 0.866 0.845 0.824 0.804 0.784 0.764 0.746 0.727 0.709 0.692 0.675 0.658 0.642 0.626 0.61 0.595 0.581 0.566 0.552

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.984" PeakHeight="110.0" Num="3" Error="0.0">
-30.182 12.683 -2.953
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.984" EndFrequency="10.5" PeakHeight="312.751" Num="5" zHalfNm="229.794" Error="2.454">
-170.551 -32.147 8.449 2.744 -1.378
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.868" Depth="0.122"/>
<TopsideChapman PeakHeight="312.751" PeakDensity="1367866.0" PeakScaleHeight="62.345" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
