<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 15:40:00.000"
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) 15:40:00</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">
FF202628410111540009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.514" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.165" 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="12.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" 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="3.371" 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="/" />
<Modeled Name="foF1p" Val="4.352" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="380.251" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.587" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.158" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="137.411" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.593" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="78.395" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="187.770" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.150" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="118">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 322.500 325.000 325.000 330.000 330.000 330.000 335.000 335.000 340.000 345.000 345.000 347.500 350.000 350.000 355.000 355.000 355.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 386.667 388.333 390.000 391.667 393.333 395.000 396.667 398.333 400.000 401.667 403.333 405.000 406.667 408.333 410.000 411.667 413.333 415.000 416.667 418.333 420.000 421.667 423.333 425.000 426.667 428.333 430.000 431.667 433.333 435.000 436.667 438.333 440.000 441.667 443.333 445.000 446.667 448.333 450.000 451.667 453.333 455.000 456.667 458.333 460.000 461.667 463.333 465.000 466.667 468.333 470.000 471.667 473.333 475.000 476.667 478.333 480.000 481.667 483.333 485.000 486.667 488.333 490.000 491.667 493.333 495.000 496.667 498.333 500.000 501.667 503.333 505.000 510.000 515.000 520.000 525.000 530.000 535.000 545.000 551.683 559.835 570.000 583.029 600.330 624.417 660.258
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 51 63 57 63 0 66 60 66 60 63 0 66 66 63 69 69 66 69 63 63 66 63 66 66 66 69 63 66 54 63 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 57 54 54 54 51 57 54 51 51 48 51 48 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 -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 1.953125 -2.734375 -2.734375 1.953125 0.390625 0.390625 -0.390625 -1.953125 2.734375 -0.390625 0.390625 -0.390625 1.171875 -2.734375 -0.390625 -2.734375 -2.734375 0.390625 0.390625 0.390625 1.953125 -0.390625 2.734375 1.953125 0.390625 -1.953125 -1.171875 -1.171875 2.734375 1.171875 -2.734375 -2.734375 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -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" >
89.486 90.0 95.0 100.0 105.0 110.0 111.628 113.257 114.885 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 380.251 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.268 2.917 3.261 3.371 3.248 3.248 3.371 3.375 3.551 3.717 3.876 4.029 4.178 4.324 4.467 4.607 4.747 4.885 5.022 5.16 5.297 5.434 5.572 5.711 5.85 5.991 6.133 6.276 6.421 6.568 6.717 6.869 7.023 7.179 7.338 7.5 7.665 7.834 8.006 8.182 8.361 8.544 8.731 8.921 9.115 9.312 9.513 9.715 9.918 10.122 10.324 10.521 10.713 10.895 11.063 11.215 11.347 11.454 11.533 11.582 11.6 11.6 11.596 11.583 11.561 11.532 11.495 11.45 11.398 11.34 11.276 11.205 11.13 11.049 10.963 10.873 10.778 10.68 10.578 10.473 10.365 10.254 10.141 10.025 9.908 9.788 9.668 9.546 9.422 9.298 9.173 9.048 8.922 8.796 8.67 8.543 8.417 8.291 8.166 8.04 7.916 7.792 7.668 7.546 7.424 7.303 7.183 7.065 6.947 6.83 6.715 6.601 6.488 6.376 6.266 6.157 6.049 5.942 5.837 5.734 5.632 5.531 5.431 5.333 5.237 5.141 5.048 4.955 4.864 4.775 4.687 4.6 4.515 4.431 4.348 4.267 4.187 4.108 4.031 3.955 3.88 3.807 3.735 3.664 3.594 3.526 3.459 3.393 3.328 3.264 3.202 3.14 3.08 3.021 2.963 2.906 2.85 2.795 2.741 2.688 2.636 2.585 2.535 2.485 2.437 2.39 2.343 2.298 2.253 2.209 2.166 2.124 2.083 2.042 2.002 1.963 1.925 1.887 1.85 1.814 1.779 1.744 1.71 1.676 1.643 1.611

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.371" PeakHeight="110.0" Num="3" Error="0.0">
-30.487 13.131 -3.158
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.371" EndFrequency="11.6" PeakHeight="380.251" Num="5" zHalfNm="275.587" Error="1.717">
-219.959 -61.74 13.833 3.53 -1.03
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.885" Depth="0.123"/>
<TopsideChapman PeakHeight="380.251" PeakDensity="1669478.9" PeakScaleHeight="78.395" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
