<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 13:50:00.000"
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="15.0">
<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" >
2026.10.17 (290) 13:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202629010171350009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.658" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.836" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.950" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" 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="350.740" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="254.777" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.376" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="126.544" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.577" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.856" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="168.750" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.210" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
325.000 320.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 333.000 336.000 339.000 342.000 345.000 345.000 346.622 348.243 349.865 351.486 353.108 354.730 356.351 357.973 359.595 361.216 362.838 364.459 366.081 367.703 369.324 370.946 372.568 374.189 375.811 377.432 379.054 380.676 382.297 383.919 385.541 387.162 388.784 390.405 392.027 393.649 395.270 396.892 398.514 400.135 401.757 403.378 405.000 406.622 408.243 409.865 411.486 413.108 414.730 416.351 417.973 419.595 421.216 422.838 424.459 426.081 427.703 429.324 430.946 432.568 434.189 435.811 437.432 439.054 440.676 442.297 443.919 445.541 447.162 448.784 450.405 452.027 453.649 455.270 456.892 458.514 460.135 461.757 463.378 465.000 470.000 475.000 480.000 490.000 490.000 500.000 505.000 514.388 525.644 539.388 556.546 578.573 607.881
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 63 48 0 60 63 60 0 63 57 60 57 60 66 0 66 66 63 63 66 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 57 51 48 54 57 54 51 54 51 0 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 -1.953125 -0.390625 -0.390625 -2.734375 1.171875 -0.390625 -1.171875 1.171875 -1.953125 1.171875 2.734375 2.734375 -0.390625 0.390625 -1.171875 1.171875 2.734375 0.390625 -1.953125 2.734375 1.171875 2.734375 1.171875 -0.390625 2.734375 2.734375 -1.953125 0.390625 2.734375 1.171875 2.734375 2.734375 -1.953125 -1.171875 2.734375 1.953125 1.171875 1.171875 -1.953125 -0.390625 1.953125 1.171875 -1.953125 1.171875 -2.734375 -1.171875 -1.953125 1.171875 2.734375 2.734375 -1.171875 -1.171875 -2.734375 -2.734375 2.734375 1.171875 -1.171875 0.390625 1.171875 0.390625 0.390625 -2.734375 -2.734375 2.734375 -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 0.390625 2.734375
</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 95.0 100.0 105.0 110.0 111.625 113.25 114.875 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 350.74 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.269 2.918 3.262 3.372 3.249 3.249 3.372 3.377 3.583 3.775 3.957 4.131 4.3 4.465 4.627 4.787 4.946 5.104 5.262 5.419 5.578 5.737 5.898 6.06 6.223 6.389 6.557 6.728 6.901 7.078 7.257 7.44 7.627 7.818 8.013 8.211 8.414 8.622 8.833 9.048 9.267 9.489 9.712 9.936 10.159 10.378 10.59 10.794 10.983 11.154 11.303 11.426 11.518 11.576 11.6 11.6 11.596 11.582 11.557 11.523 11.48 11.428 11.369 11.301 11.227 11.145 11.058 10.965 10.866 10.762 10.654 10.542 10.426 10.307 10.184 10.059 9.931 9.801 9.67 9.537 9.402 9.267 9.13 8.993 8.856 8.718 8.58 8.442 8.305 8.168 8.031 7.895 7.76 7.626 7.492 7.36 7.229 7.099 6.97 6.843 6.717 6.592 6.469 6.348 6.228 6.109 5.992 5.877 5.763 5.652 5.541 5.433 5.326 5.221 5.117 5.015 4.915 4.817 4.72 4.625 4.531 4.439 4.349 4.261 4.174 4.088 4.004 3.922 3.841 3.762 3.684 3.608 3.533 3.46 3.388 3.317 3.248 3.18 3.114 3.048 2.984 2.922 2.86 2.8 2.741 2.684 2.627 2.571 2.517 2.464 2.412 2.361 2.311 2.262 2.214 2.167 2.121 2.076 2.032 1.988 1.946 1.905 1.864 1.824 1.785 1.747 1.71 1.674 1.638 1.603 1.569 1.535 1.502 1.47 1.439 1.408 1.378 1.348 1.319 1.291 1.264 1.236 1.21 1.184 1.159 1.134

</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="11.6" PeakHeight="350.74" Num="5" zHalfNm="254.777" Error="2.54">
-199.261 -50.583 11.794 2.986 -0.801
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.875" Depth="0.123"/>
<TopsideChapman PeakHeight="350.74" PeakDensity="1669478.9" PeakScaleHeight="71.856" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
