<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 17:10:00.000"
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="12.0">
<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: 95% PACIFIC flags: Multiple candidates for F2x cusp</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) 17:10:00</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">
FF202629510221710009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.578" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.673" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="11.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="491.714" 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="3.155" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.249" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="366.010" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="263.504" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.866" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="137.678" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="58.479" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="76.339" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="173.650" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.310" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 362.500 365.000 366.833 368.667 370.500 372.333 374.167 376.000 377.833 379.667 381.500 383.333 385.167 387.000 388.833 390.667 392.500 394.333 396.167 398.000 399.833 401.667 403.500 405.333 407.167 409.000 410.833 412.667 414.500 416.333 418.167 420.000 421.833 423.667 425.500 427.333 429.167 431.000 432.833 434.667 436.500 438.333 440.167 442.000 443.833 445.667 447.500 449.333 451.167 453.000 454.833 456.667 458.500 460.333 462.167 464.000 465.833 467.667 469.500 471.333 473.167 475.000 475.000 480.000 485.000 485.000 488.190 491.714 495.628 500.000 504.916 510.484 516.842 524.172 532.716 542.801 554.887 569.635 588.031 611.622 642.969
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 72 72 72 69 75 0 75 69 0 0 0 0 0 0 69 66 72 0 72 69 69 72 72 72 72 69 0 72 72 0 72 72 72 72 75 75 0 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 0 45 57 51 45 57 57 57 57 57 57 57 54 57 57 57 57 57 54 54 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 -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 -2.734375 0.390625 -0.390625 -1.171875 -1.953125 -2.734375 -2.734375 -0.390625 -2.734375 -0.390625 -1.953125 -2.734375 -1.171875 -1.171875 0.390625 -0.390625 1.953125 -0.390625 -0.390625 1.171875 -0.390625 -1.953125 -1.171875 2.734375 -2.734375 0.390625 -1.171875 -1.953125 -2.734375 1.953125 -0.390625 2.734375 2.734375 1.953125 -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 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" >
89.52 90.0 95.0 100.0 105.0 110.0 112.538 115.0 115.077 117.615 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 366.01 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.122 2.731 3.052 3.155 3.033 3.033 3.033 3.155 3.251 3.445 3.631 3.812 3.988 4.161 4.332 4.501 4.669 4.836 5.004 5.172 5.34 5.509 5.679 5.85 6.023 6.198 6.374 6.553 6.733 6.917 7.102 7.29 7.481 7.674 7.87 8.07 8.271 8.476 8.683 8.893 9.105 9.319 9.534 9.75 9.966 10.181 10.393 10.601 10.803 10.997 11.181 11.35 11.502 11.634 11.743 11.825 11.877 11.899 11.9 11.897 11.884 11.862 11.832 11.793 11.746 11.691 11.63 11.561 11.487 11.406 11.32 11.229 11.133 11.032 10.928 10.819 10.708 10.593 10.475 10.355 10.232 10.107 9.981 9.853 9.724 9.594 9.462 9.331 9.198 9.065 8.932 8.799 8.666 8.533 8.401 8.269 8.137 8.007 7.877 7.748 7.619 7.492 7.366 7.241 7.117 6.994 6.873 6.753 6.634 6.516 6.4 6.286 6.173 6.061 5.951 5.842 5.735 5.63 5.525 5.423 5.322 5.222 5.124 5.028 4.933 4.84 4.748 4.657 4.569 4.481 4.395 4.311 4.228 4.146 4.066 3.987 3.91 3.834 3.759 3.686 3.614 3.543 3.474 3.405 3.338 3.273 3.208 3.145 3.083 3.022 2.962 2.904 2.846 2.79 2.734 2.68 2.627 2.574 2.523 2.473 2.423 2.375 2.328 2.281 2.236 2.191 2.147 2.104 2.062 2.021 1.98 1.94 1.901 1.863 1.826 1.789 1.753 1.718 1.683 1.65 1.616 1.584 1.552 1.521 1.49 1.46

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.155" PeakHeight="110.0" Num="3" Error="0.0">
-30.322 12.888 -3.046
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.155" EndFrequency="11.9" PeakHeight="366.01" Num="5" zHalfNm="263.504" Error="2.287">
-216.497 -46.133 13.617 1.052 -0.434
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.615" Depth="0.122"/>
<TopsideChapman PeakHeight="366.01" PeakDensity="1756947.9" PeakScaleHeight="76.339" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
