<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 21:40:00.000"
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="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: Multiple candidates for F2x cusp, F2 cusps do not match</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" >
2026.10.22 (295) 21:40:00</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">
FF202629510222140009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.583" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.645" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.750" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="511.175" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="415.477" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="354.654" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.745" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="90.684" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="36.374" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="45.306" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="94.490" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.740" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="164">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 323.750 322.500 321.250 320.000 320.000 320.000 320.000 320.000 320.000 320.000 321.667 323.333 325.000 330.000 331.250 332.500 333.750 335.000 336.250 337.500 338.750 340.000 340.000 340.926 341.852 342.778 343.704 344.630 345.556 346.481 347.407 348.333 349.259 350.185 351.111 352.037 352.963 353.889 354.815 355.741 356.667 357.593 358.519 359.444 360.370 361.296 362.222 363.148 364.074 365.000 367.500 370.000 370.000 370.000 370.000 370.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 375.000 380.000 380.000 382.500 385.000 385.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 391.393 392.787 394.180 395.574 396.967 398.361 399.754 401.148 402.541 403.934 405.328 406.721 408.115 409.508 410.902 412.295 413.689 415.082 416.475 417.869 419.262 420.656 422.049 423.443 424.836 426.230 427.623 429.016 430.410 431.803 433.197 434.590 435.984 437.377 438.770 440.164 441.557 442.951 444.344 445.738 447.131 448.525 449.918 451.311 452.705 454.098 455.492 456.885 458.279 459.672 461.066 462.459 463.852 465.246 466.639 468.033 469.426 470.820 472.213 473.607 475.000 475.000 478.750 482.500 486.250 490.000 490.000 495.000 496.667 498.333 500.000 502.500 505.000 507.924 511.175 514.811 518.904 523.547 528.859 534.995 542.162 550.646
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 0 0 0 0 0 0 0 0 0 0 0 60 0 0 0 51 0 0 0 51 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 57 0 0 0 75 0 63 0 72 72 75 75 75 72 75 0 75 72 72 78 81 0 78 81 81 78 60 66 0 75 72 78 75 69 63 75 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 48 0 54 51 0 0 0 60 63 54 0 0 60 0 57 57 57 54 54 57 0 54 0 48
</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="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.293 145.0 150.0 155.0 160.0 165.0 170.0 170.585 175.0 180.0 185.0 190.0 195.0 200.0 200.878 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 415.477 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.323 0.297 0.259 0.204 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.222 0.248 0.273 0.299 0.324 0.35 0.354 0.419 0.503 0.598 0.705 0.827 0.965 1.122 1.298 1.492 1.704 1.933 2.178 2.437 2.708 2.992 3.286 3.59 3.904 4.227 4.559 4.899 5.248 5.604 5.967 6.338 6.717 7.101 7.492 7.887 8.287 8.69 9.094 9.497 9.895 10.286 10.663 11.021 11.352 11.646 11.893 12.082 12.203 12.25 12.25 12.238 12.199 12.135 12.048 11.94 11.812 11.668 11.508 11.335 11.15 10.955 10.751 10.54 10.323 10.101 9.876 9.648 9.418 9.187 8.957 8.726 8.497 8.27 8.044 7.822 7.602 7.385 7.172 6.963 6.757 6.556 6.359 6.166 5.977 5.793 5.614 5.439 5.268 5.102 4.94 4.783 4.63 4.481 4.337 4.197 4.06 3.928 3.8 3.676 3.555 3.438 3.325 3.215 3.109 3.006 2.906 2.81 2.716 2.626 2.538 2.454 2.372 2.292 2.216 2.141 2.07 2.0 1.933 1.868 1.805 1.744 1.686 1.629 1.574 1.521 1.47 1.42 1.372 1.326 1.281 1.238 1.196 1.156 1.117 1.079 1.042 1.007 0.973 0.94 0.908 0.878 0.848 0.819 0.792 0.765 0.739 0.714 0.69 0.666 0.644 0.622 0.601 0.581 0.561 0.542 0.524 0.506 0.489 0.472 0.456 0.441 0.426 0.411 0.397 0.384 0.371 0.358

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="12.25" PeakHeight="415.477" Num="5" zHalfNm="354.654" Error="3.75">
-208.558 -16.694 16.022 -7.36 1.991
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="90.878" Depth="0.154"/>
<TopsideChapman PeakHeight="415.477" PeakDensity="1861817.6" PeakScaleHeight="45.306" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
