<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 18:20:00.000"
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) 18:20:00</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">
FF202628410111820009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.800" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="34.160" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="12.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="460.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.862" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="335.174" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="271.035" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.234" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="85.387" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="40.419" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="47.719" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="129.870" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="131">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 347.500 350.000 355.000 355.903 356.806 357.708 358.611 359.514 360.417 361.319 362.222 363.125 364.028 364.931 365.833 366.736 367.639 368.542 369.444 370.347 371.250 372.153 373.056 373.958 374.861 375.764 376.667 377.569 378.472 379.375 380.278 381.181 382.083 382.986 383.889 384.792 385.694 386.597 387.500 388.403 389.306 390.208 391.111 392.014 392.917 393.819 394.722 395.625 396.528 397.431 398.333 399.236 400.139 401.042 401.944 402.847 403.750 404.653 405.556 406.458 407.361 408.264 409.167 410.069 410.972 411.875 412.778 413.681 414.583 415.486 416.389 417.292 418.194 419.097 420.000 420.000 422.500 425.000 425.000 425.000 427.500 430.000 430.000 435.000 435.000 435.000 435.000 440.000 440.000 440.000 445.000 450.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 471.982 481.627
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 60 72 72 72 72 72 72 69 69 72 72 72 72 72 72 72 75 75 75 75 78 75 72 72 69 75 72 72 72 0 75 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 60 63 0 54 57 60 48 57 63 48 57 63 63 60 63 66 0 54 60 63 57 63 57 63 57 45 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</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" >
89.569 90.0 95.0 100.0 105.0 110.0 113.844 115.0 117.688 120.0 121.532 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 335.174 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.924 2.478 2.769 2.862 2.74 2.74 2.74 2.813 2.862 3.045 3.278 3.489 3.685 3.872 4.052 4.228 4.4 4.57 4.739 4.907 5.075 5.244 5.413 5.584 5.756 5.931 6.108 6.288 6.471 6.658 6.849 7.044 7.244 7.449 7.661 7.878 8.103 8.335 8.576 8.826 9.085 9.356 9.639 9.934 10.242 10.564 10.897 11.236 11.572 11.877 12.108 12.2 12.2 12.188 12.152 12.093 12.012 11.913 11.797 11.664 11.517 11.358 11.187 11.007 10.819 10.623 10.421 10.214 10.003 9.79 9.574 9.356 9.138 8.92 8.702 8.485 8.27 8.057 7.845 7.637 7.431 7.228 7.029 6.833 6.64 6.451 6.266 6.085 5.908 5.735 5.566 5.401 5.24 5.083 4.93 4.781 4.636 4.494 4.357 4.223 4.093 3.966 3.844 3.724 3.608 3.496 3.387 3.281 3.178 3.078 2.981 2.887 2.796 2.707 2.622 2.539 2.458 2.38 2.304 2.231 2.16 2.091 2.025 1.96 1.897 1.837 1.778 1.721 1.666 1.613 1.561 1.511 1.463 1.416 1.371 1.327 1.284 1.243 1.203 1.164 1.127 1.091 1.056 1.022 0.989 0.957 0.926 0.897 0.868 0.84 0.813 0.787 0.761 0.737 0.713 0.69 0.668 0.647 0.626 0.606 0.586 0.567 0.549 0.531 0.514 0.498 0.482 0.466 0.451 0.437 0.423 0.409 0.396 0.383 0.371 0.359 0.347 0.336 0.325 0.315 0.305 0.295 0.285 0.276 0.267 0.259

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.862" PeakHeight="110.0" Num="3" Error="0.0">
-30.077 12.529 -2.883
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.862" EndFrequency="12.2" PeakHeight="335.174" Num="5" zHalfNm="271.035" Error="2.437">
-162.527 -73.847 21.553 2.082 -0.903
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.532" Depth="0.122"/>
<TopsideChapman PeakHeight="335.174" PeakDensity="1846650.1" PeakScaleHeight="47.719" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
