<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 17:40:00.000"
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" >
2026.10.14 (287) 17:40:00</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">
FF202628710141740009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.463" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.960" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="10.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="540.000" 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="3.052" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.200" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="391.346" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.034" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.043" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="155.098" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.490" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="85.464" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="194.740" 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="110">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 335.000 336.000 337.000 338.000 339.000 340.000 345.000 340.000 345.000 350.000 345.000 346.667 348.333 350.000 355.000 360.000 360.000 360.000 360.000 362.500 365.000 365.000 365.000 367.273 369.545 371.818 374.091 376.364 378.636 380.909 383.182 385.455 387.727 390.000 392.273 394.545 396.818 399.091 401.364 403.636 405.909 408.182 410.455 412.727 415.000 417.273 419.545 421.818 424.091 426.364 428.636 430.909 433.182 435.455 437.727 440.000 442.273 444.545 446.818 449.091 451.364 453.636 455.909 458.182 460.455 462.727 465.000 467.273 469.545 471.818 474.091 476.364 478.636 480.909 483.182 485.455 487.727 490.000 492.273 494.545 496.818 499.091 501.364 503.636 505.909 508.182 510.455 512.727 515.000 517.273 519.545 521.818 524.091 526.364 528.636 530.909 533.182 535.455 537.727 540.000 550.000 560.000 573.263 587.841 603.941 621.813 641.767 664.191 689.571
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 0 0 0 0 66 63 54 0 60 66 48 0 66 0 0 69 0 75 0 72 0 72 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 51 51 51 45 42 45 45 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 -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 -1.171875 -0.390625 2.734375 0.390625 -1.171875 1.953125 0.390625 2.734375 0.390625 -0.390625 1.953125 -2.734375 2.734375 -1.171875 -1.953125 -2.734375 -2.734375 -0.390625 2.734375 2.734375 0.390625 -1.171875 1.953125 2.734375 2.734375 -1.953125 -2.734375 2.734375 2.734375 -1.953125 -1.171875 -0.390625 -2.734375 -2.734375 1.953125 1.171875 -1.171875 0.390625 0.390625 2.734375 2.734375 2.734375 1.171875 -1.171875 -2.734375 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125 -0.390625
</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" >
89.537 90.0 95.0 100.0 105.0 110.0 112.985 115.0 115.969 118.954 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 391.346 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.052 2.642 2.953 3.052 2.93 2.93 2.93 3.052 3.089 3.261 3.428 3.59 3.749 3.905 4.06 4.214 4.367 4.52 4.672 4.824 4.977 5.129 5.282 5.436 5.59 5.745 5.901 6.058 6.215 6.374 6.534 6.694 6.856 7.02 7.184 7.35 7.516 7.685 7.854 8.024 8.196 8.369 8.543 8.718 8.893 9.069 9.245 9.422 9.597 9.772 9.945 10.116 10.283 10.445 10.602 10.75 10.887 11.012 11.122 11.213 11.283 11.329 11.349 11.35 11.348 11.339 11.323 11.3 11.27 11.234 11.193 11.145 11.092 11.034 10.972 10.904 10.833 10.757 10.677 10.594 10.508 10.419 10.326 10.231 10.134 10.035 9.933 9.83 9.725 9.618 9.51 9.401 9.291 9.18 9.069 8.957 8.844 8.731 8.618 8.504 8.391 8.278 8.165 8.052 7.939 7.827 7.715 7.604 7.493 7.383 7.274 7.166 7.058 6.951 6.845 6.74 6.636 6.532 6.43 6.329 6.229 6.13 6.032 5.935 5.839 5.745 5.651 5.559 5.468 5.378 5.289 5.201 5.115 5.029 4.945 4.862 4.78 4.7 4.62 4.542 4.464 4.388 4.313 4.239 4.167 4.095 4.025 3.955 3.887 3.819 3.753 3.688 3.624 3.561 3.498 3.437 3.377 3.318 3.26 3.202 3.146 3.091 3.036 2.983 2.93 2.878 2.827 2.777 2.728 2.68 2.632 2.585 2.539 2.494 2.45 2.406 2.363 2.321 2.28 2.239 2.199 2.16 2.121 2.083 2.046 2.009

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.052" PeakHeight="110.0" Num="3" Error="0.0">
-30.238 12.766 -2.991
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.052" EndFrequency="11.35" PeakHeight="391.346" Num="5" zHalfNm="275.034" Error="2.052">
-238.646 -50.978 18.622 -1.503 0.113
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.954" Depth="0.122"/>
<TopsideChapman PeakHeight="391.346" PeakDensity="1598294.0" PeakScaleHeight="85.464" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
