<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 19:40:00.000"
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" >
2026.10.11 (284) 19:40:00</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">
FF202628410111940009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.528" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.097" 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="12.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" 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="2.238" 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="392.766" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="299.775" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.468" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="130.755" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.625" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.059" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="158.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.300" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="130">
<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 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000 386.133 387.267 388.400 389.533 390.667 391.800 392.933 394.067 395.200 396.333 397.467 398.600 399.733 400.867 402.000 403.133 404.267 405.400 406.533 407.667 408.800 409.933 411.067 412.200 413.333 414.467 415.600 416.733 417.867 419.000 420.133 421.267 422.400 423.533 424.667 425.800 426.933 428.067 429.200 430.333 431.467 432.600 433.733 434.867 436.000 437.133 438.267 439.400 440.533 441.667 442.800 443.933 445.067 446.200 447.333 448.467 449.600 450.733 451.867 453.000 454.133 455.267 456.400 457.533 458.667 459.800 460.933 462.067 463.200 464.333 465.467 466.600 467.733 468.867 470.000 475.000 480.000 480.000 485.000 485.000 490.000 495.000 495.000 500.000 500.000 505.000 510.000 512.500 515.000 520.000 530.000 535.000 540.000 545.000 555.000 565.000 580.000 595.000 621.061 659.953
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 63 72 60 69 75 63 72 75 75 75 75 72 78 69 75 78 75 78 69 75 78 75 78 78 75 78 72 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 66 0 0 60 63 60 63 60 63 60 54 63 60 66 63 63 0 60 60 60 63 63 60 57 57 60 57 54 48
</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 -1.171875 1.171875 -0.390625 -0.390625 -1.953125 -1.953125 -0.390625 -0.390625 -1.171875 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 2.734375 -0.390625 1.171875 -0.390625 2.734375 2.734375 -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 -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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875
</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" >
89.698 90.0 95.0 100.0 105.0 110.0 115.0 116.924 120.0 123.848 125.0 130.0 130.772 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 392.766 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.226 1.501 1.938 2.166 2.238 2.172 2.11 2.11 2.11 2.131 2.224 2.238 2.373 2.546 2.727 2.912 3.098 3.282 3.465 3.645 3.824 4.001 4.177 4.353 4.528 4.704 4.88 5.057 5.235 5.415 5.597 5.781 5.967 6.156 6.348 6.542 6.741 6.943 7.148 7.358 7.572 7.79 8.013 8.24 8.472 8.708 8.949 9.193 9.441 9.691 9.943 10.196 10.447 10.695 10.937 11.17 11.392 11.597 11.782 11.945 12.08 12.185 12.257 12.295 12.3 12.299 12.287 12.265 12.231 12.187 12.133 12.071 11.999 11.92 11.832 11.738 11.638 11.531 11.419 11.301 11.179 11.053 10.923 10.79 10.653 10.514 10.373 10.229 10.084 9.938 9.79 9.641 9.492 9.343 9.193 9.043 8.893 8.744 8.595 8.447 8.299 8.153 8.007 7.863 7.72 7.578 7.437 7.298 7.161 7.025 6.891 6.758 6.627 6.498 6.371 6.245 6.122 6.0 5.88 5.762 5.645 5.531 5.419 5.308 5.199 5.092 4.987 4.884 4.783 4.684 4.586 4.49 4.396 4.304 4.213 4.124 4.037 3.952 3.868 3.785 3.705 3.626 3.549 3.473 3.398 3.325 3.254 3.184 3.116 3.049 2.983 2.918 2.855 2.794 2.733 2.674 2.616 2.559 2.504 2.449 2.396 2.344 2.293 2.243 2.194 2.146 2.099 2.054 2.009 1.965 1.922 1.88 1.839 1.799 1.759 1.721 1.683 1.646 1.61 1.575 1.54 1.506 1.473 1.441 1.409 1.379 1.348

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.238" PeakHeight="110.0" Num="3" Error="0.0">
-29.403 11.574 -2.473
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.238" EndFrequency="12.3" PeakHeight="392.766" Num="5" zHalfNm="299.775" Error="2.601">
-231.783 -46.85 17.219 1.366 -1.946
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="20.772" Depth="0.128"/>
<TopsideChapman PeakHeight="392.766" PeakDensity="1877047.1" PeakScaleHeight="70.059" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
