<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-10 -283 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" >
2026.10.10 (283) 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">
FF202628310101540009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.618" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.239" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" 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="3.372" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.352" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="362.237" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.115" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.157" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="124.806" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.657" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="72.054" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="176.150" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.080" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="112">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 340.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 370.000 375.000 375.000 376.438 377.877 379.315 380.753 382.192 383.630 385.068 386.507 387.945 389.384 390.822 392.260 393.699 395.137 396.575 398.014 399.452 400.890 402.329 403.767 405.205 406.644 408.082 409.521 410.959 412.397 413.836 415.274 416.712 418.151 419.589 421.027 422.466 423.904 425.342 426.781 428.219 429.658 431.096 432.534 433.973 435.411 436.849 438.288 439.726 441.164 442.603 444.041 445.479 446.918 448.356 449.795 451.233 452.671 454.110 455.548 456.986 458.425 459.863 461.301 462.740 464.178 465.616 467.055 468.493 469.932 471.370 472.808 474.247 475.685 477.123 478.562 480.000 485.000 490.000 500.000 500.000 505.000 515.000 525.000 535.000 545.000 565.000 595.000 655.748
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 51 0 54 0 51 48 51 54 54 51 57 57 57 54 57 57 57 54 57 60 60 57 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 57 54 54 45 51 51 51 54 51 51 51 48 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 -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 1.953125 0.390625 2.734375 1.953125 1.953125 -2.734375 2.734375 -1.171875 0.390625 2.734375 -1.953125 0.390625 -2.734375 -2.734375 -1.953125 -1.953125 -1.953125 0.390625 -0.390625 0.390625 -0.390625 -2.734375 -0.390625 1.953125 -2.734375 2.734375 1.953125 1.953125 1.171875 0.390625 1.171875 -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 -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" >
89.487 90.0 95.0 100.0 105.0 110.0 111.625 113.249 114.874 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 362.237 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.269 2.918 3.262 3.372 3.249 3.249 3.372 3.377 3.57 3.756 3.934 4.104 4.268 4.426 4.579 4.729 4.876 5.021 5.164 5.307 5.448 5.59 5.731 5.874 6.016 6.16 6.306 6.453 6.602 6.754 6.908 7.065 7.226 7.389 7.557 7.73 7.907 8.089 8.276 8.469 8.668 8.873 9.085 9.302 9.525 9.752 9.982 10.211 10.437 10.655 10.859 11.045 11.207 11.341 11.444 11.513 11.546 11.55 11.548 11.537 11.516 11.485 11.445 11.396 11.339 11.275 11.203 11.124 11.039 10.949 10.852 10.751 10.645 10.535 10.421 10.304 10.183 10.06 9.934 9.806 9.676 9.544 9.411 9.277 9.141 9.006 8.869 8.732 8.596 8.459 8.322 8.186 8.05 7.915 7.78 7.647 7.514 7.382 7.251 7.122 6.993 6.866 6.741 6.616 6.493 6.372 6.252 6.134 6.017 5.902 5.789 5.677 5.567 5.458 5.351 5.246 5.142 5.04 4.94 4.842 4.745 4.65 4.556 4.464 4.374 4.285 4.198 4.112 4.028 3.946 3.865 3.785 3.707 3.631 3.556 3.482 3.41 3.339 3.27 3.202 3.135 3.069 3.005 2.942 2.881 2.82 2.761 2.703 2.646 2.591 2.536 2.483 2.43 2.379 2.329 2.28 2.231 2.184 2.138 2.093 2.048 2.005 1.962 1.921 1.88 1.84 1.801 1.762 1.725 1.688 1.652 1.617 1.583 1.549 1.516 1.484 1.452 1.421 1.391 1.361 1.332 1.304 1.276 1.248 1.222 1.196

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.372" PeakHeight="110.0" Num="3" Error="0.0">
-30.487 13.132 -3.158
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.372" EndFrequency="11.55" PeakHeight="362.237" Num="5" zHalfNm="267.115" Error="2.804">
-204.111 -59.254 12.145 6.057 -2.2
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.874" Depth="0.123"/>
<TopsideChapman PeakHeight="362.237" PeakDensity="1655117.9" PeakScaleHeight="72.054" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
