<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 12:20:00.000"
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) 12:20:00</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">
FF202628410111220009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.722" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.899" 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="11.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="10.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="460.000" 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="3.180" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.262" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="343.031" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="254.948" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.993" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="117.289" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.697" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.450" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="154.910" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.220" 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" >
5.5 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 310.000 310.000 310.000 312.500 315.000 315.000 320.000 317.500 315.000 317.500 320.000 320.000 321.250 322.500 323.750 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 331.667 333.333 335.000 336.667 338.333 340.000 341.667 343.333 345.000 346.667 348.333 350.000 351.667 353.333 355.000 356.667 358.333 360.000 361.667 363.333 365.000 366.667 368.333 370.000 371.667 373.333 375.000 376.667 378.333 380.000 381.667 383.333 385.000 386.667 388.333 390.000 391.667 393.333 395.000 396.667 398.333 400.000 401.667 403.333 405.000 406.667 408.333 410.000 411.667 413.333 415.000 416.667 418.333 420.000 421.667 423.333 425.000 426.667 428.333 430.000 431.667 433.333 435.000 436.667 438.333 440.000 441.667 443.333 445.000 446.667 448.333 450.000 451.667 453.333 455.000 456.667 458.333 460.000 465.000 470.000 480.000 485.000 495.000 507.808 525.616 552.061 595.443
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 60 57 57 0 69 66 60 54 63 0 57 63 0 0 0 54 0 60 60 63 54 0 54 60 63 66 60 60 60 69 0 60 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 0 0 0 0 54 63 60 57 57 54 54 54 51 42
</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 -1.953125 2.734375 -0.390625 1.953125 -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 -1.171875 -0.390625 0.390625 0.390625 2.734375 -2.734375 1.171875 0.390625 0.390625 -1.953125 -2.734375 2.734375 0.390625 -1.953125 0.390625 1.953125 -0.390625 2.734375 -1.953125 2.734375 2.734375 -2.734375 0.390625 0.390625 -1.953125 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
</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" >
89.515 90.0 95.0 100.0 105.0 110.0 112.431 114.861 115.0 117.292 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 343.031 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.138 2.752 3.077 3.18 3.058 3.058 3.065 3.18 3.291 3.482 3.661 3.831 3.995 4.157 4.315 4.473 4.63 4.787 4.944 5.102 5.262 5.423 5.586 5.752 5.92 6.091 6.266 6.444 6.626 6.812 7.002 7.197 7.397 7.602 7.812 8.028 8.249 8.475 8.706 8.941 9.18 9.421 9.662 9.902 10.138 10.365 10.579 10.777 10.952 11.101 11.217 11.299 11.343 11.35 11.349 11.338 11.315 11.282 11.237 11.183 11.12 11.048 10.967 10.88 10.785 10.684 10.577 10.464 10.347 10.225 10.099 9.97 9.837 9.702 9.564 9.425 9.283 9.141 8.997 8.852 8.707 8.561 8.415 8.269 8.124 7.979 7.834 7.691 7.548 7.406 7.266 7.126 6.988 6.852 6.717 6.583 6.451 6.321 6.193 6.066 5.941 5.818 5.697 5.578 5.46 5.345 5.231 5.12 5.01 4.902 4.797 4.693 4.591 4.491 4.393 4.296 4.202 4.109 4.018 3.929 3.842 3.757 3.673 3.591 3.51 3.432 3.355 3.279 3.205 3.133 3.062 2.993 2.925 2.859 2.794 2.73 2.668 2.608 2.548 2.49 2.433 2.377 2.323 2.27 2.218 2.167 2.117 2.069 2.021 1.975 1.929 1.885 1.842 1.799 1.758 1.717 1.678 1.639 1.601 1.564 1.528 1.493 1.458 1.425 1.392 1.36 1.328 1.298 1.268 1.238 1.21 1.182 1.154 1.127 1.101 1.076 1.051 1.027 1.003 0.98 0.957 0.935 0.913 0.892 0.871 0.851

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.18" PeakHeight="110.0" Num="3" Error="0.0">
-30.342 12.917 -3.06
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.18" EndFrequency="11.35" PeakHeight="343.031" Num="5" zHalfNm="254.948" Error="3.203">
-188.923 -48.734 9.203 3.232 -0.517
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.292" Depth="0.122"/>
<TopsideChapman PeakHeight="343.031" PeakDensity="1598294.0" PeakScaleHeight="66.45" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
