<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 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: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.10.15 (288) 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">
FF202628810151130009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.832" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.448" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="285.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="285.000" 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="425.957" 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="2.983" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.165" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="318.083" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="234.706" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.972" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="109.833" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="36.308" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="61.660" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="143.940" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="99">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.5 5.55 5.6 5.65 5.7 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
285.000 285.000 285.714 286.429 287.143 287.857 288.571 289.286 290.000 290.000 295.000 296.250 297.500 298.750 300.000 305.000 310.000 310.000 310.000 310.000 312.500 315.000 315.000 315.000 315.000 317.500 320.000 320.000 325.000 326.667 328.333 330.000 331.667 333.333 335.000 335.000 335.000 337.500 340.000 341.659 343.318 344.977 346.636 348.295 349.954 351.613 353.272 354.931 356.590 358.249 359.908 361.567 363.226 364.885 366.544 368.203 369.862 371.521 373.180 374.840 376.499 378.158 379.817 381.476 383.135 384.794 386.453 388.112 389.771 391.430 393.089 394.748 396.407 398.066 399.725 401.384 403.043 404.702 406.361 408.020 409.679 411.338 412.997 414.656 416.315 417.974 420.286 422.922 425.957 429.489 433.651 438.626 445.000 450.000 460.000 475.000 490.000 520.000 559.891
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 60 0 51 0 0 0 0 57 51 69 0 0 0 57 63 0 0 69 69 0 0 0 0 0 0 66 78 81 0 51 78 0 0 75 0 0 0 69 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -2.734375 -0.390625 1.953125 2.734375 0.390625 2.734375 -1.171875 0.390625 -0.390625 2.734375 -1.953125 1.171875 -1.953125 1.171875 2.734375 -2.734375 2.734375 1.171875 1.953125 0.390625 -1.953125 -2.734375 -1.171875 -0.390625 1.171875 2.734375 -1.953125 1.953125 0.390625 0.390625 -1.171875 0.390625 1.171875 -0.390625 -0.390625 0.390625 0.390625 -0.390625 2.734375 -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 95.0 100.0 105.0 110.0 113.291 115.0 116.583 119.874 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 318.083 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.005 2.582 2.886 2.983 2.861 2.861 2.861 2.983 2.988 3.198 3.403 3.602 3.795 3.984 4.17 4.353 4.535 4.715 4.895 5.074 5.254 5.435 5.618 5.802 5.987 6.176 6.366 6.56 6.756 6.956 7.159 7.366 7.577 7.791 8.009 8.23 8.453 8.679 8.905 9.129 9.35 9.564 9.767 9.952 10.114 10.245 10.34 10.391 10.4 10.399 10.388 10.364 10.328 10.281 10.224 10.158 10.082 9.999 9.907 9.809 9.704 9.593 9.477 9.357 9.232 9.104 8.972 8.838 8.701 8.562 8.421 8.28 8.137 7.993 7.85 7.706 7.562 7.418 7.275 7.133 6.991 6.85 6.711 6.573 6.436 6.301 6.168 6.036 5.905 5.777 5.65 5.526 5.403 5.282 5.164 5.047 4.932 4.82 4.709 4.6 4.494 4.39 4.287 4.187 4.088 3.992 3.898 3.805 3.715 3.626 3.54 3.455 3.372 3.291 3.212 3.134 3.058 2.984 2.912 2.841 2.772 2.704 2.638 2.574 2.511 2.449 2.389 2.331 2.273 2.217 2.163 2.11 2.058 2.007 1.957 1.909 1.862 1.816 1.771 1.727 1.684 1.642 1.602 1.562 1.523 1.485 1.448 1.412 1.377 1.343 1.31 1.277 1.245 1.214 1.184 1.155 1.126 1.098 1.07 1.044 1.018 0.992 0.968 0.943 0.92 0.897 0.875 0.853 0.831 0.811 0.79 0.771 0.751 0.733 0.714 0.697 0.679 0.662 0.646 0.629 0.614 0.598 0.583 0.569 0.555 0.541

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.983" PeakHeight="110.0" Num="3" Error="0.0">
-30.181 12.681 -2.952
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.983" EndFrequency="10.4" PeakHeight="318.083" Num="5" zHalfNm="234.706" Error="1.492">
-169.829 -41.016 12.537 0.721 -0.622
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.874" Depth="0.122"/>
<TopsideChapman PeakHeight="318.083" PeakDensity="1341935.5" PeakScaleHeight="61.66" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
