<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 17:00:00.000"
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) 17:00:00</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">
FF202628710141700009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.373" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.341" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="355.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="580.000" 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="3.198" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.270" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="406.608" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="287.215" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.797" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="155.404" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="58.641" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="87.248" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="210.410" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.160" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="107">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 355.000 358.750 362.500 366.250 370.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 380.000 380.000 383.333 386.667 390.000 391.667 393.333 395.000 395.000 395.000 397.434 399.868 402.303 404.737 407.171 409.605 412.039 414.474 416.908 419.342 421.776 424.211 426.645 429.079 431.513 433.947 436.382 438.816 441.250 443.684 446.118 448.553 450.987 453.421 455.855 458.289 460.724 463.158 465.592 468.026 470.461 472.895 475.329 477.763 480.197 482.632 485.066 487.500 489.934 492.368 494.803 497.237 499.671 502.105 504.539 506.974 509.408 511.842 514.276 516.711 519.145 521.579 524.013 526.447 528.882 531.316 533.750 536.184 538.618 541.053 543.487 545.921 548.355 550.789 553.224 555.658 558.092 560.526 562.961 565.395 567.829 570.263 572.697 575.132 577.566 580.000 585.000 595.000 610.000 626.533 649.519 683.656 739.654
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 57 0 72 0 69 0 0 66 0 0 0 66 57 72 69 72 72 69 0 0 63 0 69 0 63 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 51 54 51 51 45 42 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 -2.734375 0.390625 -1.953125 -0.390625 0.390625 -0.390625 -2.734375 0.390625 1.953125 2.734375 2.734375 1.171875 0.390625 2.734375 -0.390625 -1.953125 -2.734375 0.390625 -2.734375 1.171875 2.734375 -1.953125 -0.390625 -0.390625 1.953125 1.953125 -0.390625 -0.390625 -1.171875 -1.171875 -1.953125 -1.953125 -1.171875 -2.734375 -1.953125 -2.734375 -2.734375 -0.390625 -2.734375 -2.734375 -2.734375 -1.171875 0.390625 1.171875 -0.390625 2.734375 -2.734375 -1.953125 1.171875 -1.171875 -0.390625 -1.953125 1.953125 0.390625 1.953125 0.390625 1.953125 2.734375 -0.390625 0.390625 -2.734375 1.953125 2.734375 -1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -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" >
89.513 90.0 95.0 100.0 105.0 110.0 112.353 114.705 115.0 117.058 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 406.608 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.151 2.768 3.094 3.198 3.076 3.076 3.091 3.198 3.295 3.451 3.601 3.746 3.887 4.024 4.16 4.293 4.425 4.556 4.686 4.815 4.944 5.073 5.202 5.331 5.46 5.59 5.72 5.851 5.982 6.114 6.247 6.381 6.515 6.651 6.788 6.926 7.066 7.206 7.348 7.492 7.637 7.783 7.932 8.081 8.232 8.385 8.54 8.696 8.853 9.012 9.172 9.333 9.495 9.657 9.818 9.979 10.138 10.293 10.443 10.586 10.718 10.838 10.939 11.019 11.073 11.098 11.1 11.098 11.09 11.075 11.054 11.027 10.993 10.954 10.91 10.86 10.806 10.747 10.684 10.616 10.545 10.47 10.392 10.31 10.226 10.138 10.049 9.956 9.862 9.766 9.668 9.568 9.467 9.364 9.26 9.155 9.05 8.943 8.836 8.729 8.621 8.512 8.404 8.295 8.187 8.078 7.97 7.862 7.754 7.646 7.539 7.433 7.327 7.221 7.117 7.013 6.909 6.807 6.705 6.605 6.505 6.406 6.308 6.211 6.114 6.019 5.925 5.832 5.74 5.649 5.559 5.47 5.383 5.296 5.21 5.126 5.042 4.96 4.879 4.799 4.72 4.642 4.565 4.489 4.414 4.341 4.268 4.197 4.126 4.057 3.988 3.921 3.855 3.789 3.725 3.662 3.599 3.538 3.478 3.418 3.36 3.302 3.245 3.19 3.135 3.081 3.028 2.975 2.924 2.873 2.824 2.775 2.727 2.679 2.633 2.587 2.542 2.498 2.454 2.411 2.369 2.328 2.287 2.247 2.208 2.169

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.198" PeakHeight="110.0" Num="3" Error="0.0">
-30.356 12.938 -3.069
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.198" EndFrequency="11.1" PeakHeight="406.608" Num="5" zHalfNm="287.215" Error="2.242">
-242.251 -69.193 22.823 -0.818 -0.111
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.058" Depth="0.122"/>
<TopsideChapman PeakHeight="406.608" PeakDensity="1528660.0" PeakScaleHeight="87.248" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
