<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 19:30:00.000"
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="14.0">
<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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</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" >
2026.10.23 (296) 19:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629610231930009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.665" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.914" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="0.400" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="470.000" 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="2.318" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="357.938" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="279.124" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.459" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="108.300" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.391" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="57.403" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="130.270" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="162">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 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 11.4 11.45 11.5 11.55 11.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 255.000 255.000 256.500 258.000 259.500 261.000 262.500 264.000 265.500 267.000 268.500 270.000 271.500 273.000 274.500 276.000 277.500 279.000 280.500 282.000 283.500 285.000 285.000 286.250 287.500 288.750 290.000 290.000 290.000 291.316 292.632 293.947 295.263 296.579 297.895 299.211 300.526 301.842 303.158 304.474 305.789 307.105 308.421 309.737 311.053 312.368 313.684 315.000 316.316 317.632 318.947 320.263 321.579 322.895 324.211 325.526 326.842 328.158 329.474 330.789 332.105 333.421 334.737 336.053 337.368 338.684 340.000 341.316 342.632 343.947 345.263 346.579 347.895 349.211 350.526 351.842 353.158 354.474 355.789 357.105 358.421 359.737 361.053 362.368 363.684 365.000 366.316 367.632 368.947 370.263 371.579 372.895 374.211 375.526 376.842 378.158 379.474 380.789 382.105 383.421 384.737 386.053 387.368 388.684 390.000 391.316 392.632 393.947 395.263 396.579 397.895 399.211 400.526 401.842 403.158 404.474 405.789 407.105 408.421 409.737 411.053 412.368 413.684 415.000 420.000 422.500 425.000 425.000 430.000 430.000 430.000 430.000 435.000 435.000 435.000 440.000 440.000 445.000 445.000 445.000 445.000 450.000 455.000 455.000 460.000 460.000 460.000 465.000 470.000 470.000 475.000 479.105 483.637 488.665 494.277 500.579 507.708 515.838 525.195 536.080 548.901
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
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 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 63 57 0 66 69 66 66 60 66 57 63 66 60 0 0 63 0 63 0 0 0 0 54 0 48 48 42 45 42 0 0 0 0 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" >
89.68 90.0 95.0 100.0 105.0 110.0 115.0 116.507 120.0 123.015 125.0 129.522 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 357.938 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.227 1.555 2.007 2.243 2.318 2.244 2.191 2.191 2.191 2.23 2.318 2.331 2.466 2.597 2.729 2.863 2.999 3.139 3.285 3.435 3.592 3.755 3.925 4.102 4.287 4.479 4.679 4.886 5.099 5.319 5.545 5.776 6.011 6.25 6.493 6.738 6.986 7.236 7.487 7.739 7.993 8.247 8.502 8.757 9.013 9.269 9.525 9.779 10.033 10.283 10.529 10.767 10.993 11.2 11.377 11.512 11.588 11.6 11.599 11.583 11.552 11.506 11.446 11.373 11.289 11.193 11.087 10.971 10.847 10.716 10.578 10.433 10.284 10.129 9.971 9.809 9.644 9.477 9.307 9.137 8.965 8.793 8.62 8.448 8.276 8.104 7.934 7.765 7.597 7.43 7.265 7.102 6.941 6.783 6.626 6.472 6.32 6.17 6.023 5.879 5.737 5.597 5.461 5.326 5.195 5.066 4.94 4.817 4.696 4.577 4.462 4.348 4.238 4.13 4.024 3.921 3.82 3.721 3.625 3.531 3.44 3.35 3.263 3.178 3.095 3.014 2.935 2.858 2.783 2.71 2.639 2.569 2.501 2.435 2.371 2.308 2.247 2.188 2.13 2.073 2.018 1.964 1.912 1.861 1.812 1.764 1.717 1.671 1.626 1.583 1.541 1.5 1.46 1.421 1.383 1.346 1.31 1.275 1.241 1.208 1.175 1.144 1.113 1.083 1.054 1.026 0.999 0.972 0.946 0.921 0.896 0.872 0.849 0.826 0.804 0.782 0.761 0.741 0.721 0.702 0.683 0.664 0.647 0.629 0.612 0.596 0.58

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.318" PeakHeight="110.0" Num="3" Error="0.0">
-29.502 11.713 -2.531
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.318" EndFrequency="11.6" PeakHeight="357.938" Num="5" zHalfNm="279.124" Error="3.208">
-187.312 -51.885 14.231 -5.645 2.195
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="19.522" Depth="0.127"/>
<TopsideChapman PeakHeight="357.938" PeakDensity="1669478.9" PeakScaleHeight="57.403" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
