<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 20:40:00.000"
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="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" >
2026.10.16 (289) 20:40:00</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">
FF202628910162040009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.644" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.193" 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="12.200" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.150" 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="1.241" 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="/" />
<URSI ID="92" Val="382.403" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="299.686" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.315" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="119.301" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.750" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="61.519" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="126.960" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.680" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="116">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 326.250 327.500 328.750 330.000 330.000 331.667 333.333 335.000 335.000 336.667 338.333 340.000 340.000 337.500 335.000 340.000 340.000 340.000 341.667 343.333 345.000 350.000 351.519 353.038 354.557 356.076 357.595 359.114 360.633 362.152 363.671 365.190 366.709 368.228 369.747 371.266 372.785 374.304 375.823 377.342 378.861 380.380 381.899 383.418 384.937 386.456 387.975 389.494 391.013 392.532 394.051 395.570 397.089 398.608 400.127 401.646 403.165 404.684 406.203 407.722 409.241 410.759 412.278 413.797 415.316 416.835 418.354 419.873 421.392 422.911 424.430 425.949 427.468 428.987 430.506 432.025 433.544 435.063 436.582 438.101 439.620 441.139 442.658 444.177 445.696 447.215 448.734 450.253 451.772 453.291 454.810 456.329 457.848 459.367 460.886 462.405 463.924 465.443 466.962 468.481 470.000 475.000 480.000 485.000 490.000 495.124 501.172 508.420 517.264 528.297 542.445 561.246 587.445 626.480
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 75 0 0 0 72 78 0 0 72 72 0 0 63 66 0 72 75 0 75 0 0 75 69 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 51 0 63 60 57 54 54 54 57 54 0 54 0 57
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 -1.171875 1.171875 1.953125 1.953125 -1.171875 -1.171875 2.734375 -0.390625 -1.171875 -1.171875 0.390625 -0.390625 -0.390625 -2.734375 0.390625 2.734375 0.390625 -1.953125 -1.171875 0.390625 -2.734375 0.390625 -2.734375 -0.390625 -0.390625 -1.171875 1.953125 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 -1.171875 -1.171875 0.390625 -1.953125 -0.390625 -0.390625 -0.390625 1.171875 -1.953125 1.953125 -1.953125 0.390625 1.953125 2.734375 1.953125 1.953125 1.171875 0.390625 2.734375 2.734375 1.953125 1.953125 -1.171875 1.953125 -1.953125 -1.953125 -1.953125 -1.171875 1.171875 2.734375 -1.171875 -2.734375 -2.734375 1.953125 -1.953125 0.390625 -0.390625 -2.734375 -1.171875 0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 0.390625 -1.171875 1.953125 -1.171875
</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" >
90.073 95.0 100.0 105.0 110.0 115.0 120.0 123.451 125.0 130.0 135.0 136.903 140.0 145.0 150.0 150.354 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 382.403 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.828 1.075 1.201 1.241 1.219 1.153 1.077 1.077 1.077 1.077 1.077 1.115 1.176 1.237 1.241 1.357 1.492 1.639 1.797 1.967 2.149 2.341 2.542 2.753 2.973 3.2 3.434 3.674 3.92 4.172 4.428 4.689 4.954 5.222 5.495 5.771 6.05 6.332 6.616 6.904 7.193 7.484 7.776 8.069 8.362 8.655 8.946 9.236 9.521 9.801 10.074 10.338 10.591 10.829 11.049 11.249 11.423 11.568 11.68 11.757 11.795 11.8 11.798 11.783 11.754 11.711 11.657 11.59 11.513 11.426 11.329 11.224 11.111 10.99 10.863 10.731 10.593 10.45 10.304 10.153 10.0 9.844 9.685 9.525 9.364 9.201 9.038 8.874 8.711 8.547 8.384 8.221 8.06 7.899 7.739 7.581 7.424 7.269 7.116 6.964 6.815 6.667 6.522 6.378 6.237 6.098 5.961 5.827 5.695 5.565 5.437 5.312 5.189 5.069 4.95 4.835 4.721 4.61 4.501 4.394 4.29 4.187 4.087 3.989 3.894 3.8 3.708 3.619 3.531 3.445 3.362 3.28 3.2 3.122 3.045 2.971 2.898 2.827 2.758 2.69 2.624 2.559 2.496 2.434 2.374 2.316 2.258 2.202 2.148 2.095 2.043 1.992 1.943 1.894 1.847 1.801 1.757 1.713 1.67 1.629 1.588 1.548 1.51 1.472 1.435 1.4 1.365 1.331 1.297 1.265 1.233 1.203 1.173 1.143 1.115 1.087 1.06 1.033 1.007 0.982 0.958 0.934 0.91 0.887 0.865 0.844

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.241" PeakHeight="110.0" Num="3" Error="0.0">
-27.418 9.027 -1.536
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.241" EndFrequency="11.8" PeakHeight="382.403" Num="5" zHalfNm="299.686" Error="0.974">
-220.533 -20.142 12.36 -4.282 0.548
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.354" Depth="0.164"/>
<TopsideChapman PeakHeight="382.403" PeakDensity="1727543.4" PeakScaleHeight="61.519" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
