<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 20:30:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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) 20:30:00</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">
FF202628710142030009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.333" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.668" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.400" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="567.176" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.464" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="434.073" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="320.429" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.371" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="161.634" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.803" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="83.485" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="171.210" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.730" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="93">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 355.000 365.000 365.000 365.000 365.000 365.000 366.667 368.333 370.000 372.500 375.000 377.500 380.000 382.853 385.705 388.558 391.410 394.263 397.116 399.968 402.821 405.673 408.526 411.379 414.231 417.084 419.936 422.789 425.642 428.494 431.347 434.200 437.052 439.905 442.757 445.610 448.463 451.315 454.168 457.020 459.873 462.726 465.578 468.431 471.283 474.136 476.989 479.841 482.694 485.546 488.399 491.252 494.104 496.957 499.809 502.662 505.515 508.367 511.220 514.073 516.925 519.778 522.630 525.483 528.336 531.188 534.041 536.893 539.746 542.599 545.451 548.304 551.156 554.009 556.862 559.714 563.279 567.176 571.454 576.172 580.000 585.000 595.000 600.000 610.000 620.000 630.000 645.000 660.000 680.000 700.000 731.499
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 72 78 0 75 0 0 0 69 0 72 0 72 0 0 0 0 78 0 0 0 0 0 0 0 0 0 45 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
</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 1.953125 -1.171875 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 1.953125 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 0.390625 -0.390625 2.734375 2.734375 -2.734375 -2.734375 -0.390625 1.171875 0.390625 2.734375 0.390625 1.953125 -1.171875 -1.171875 -2.734375 1.953125 -1.171875 2.734375 1.171875 0.390625 1.171875 -1.171875 -1.953125 1.953125 -1.953125 1.953125 -1.171875 1.953125 1.953125 -0.390625 2.734375 -0.390625 2.734375 0.390625 1.171875 2.734375 -1.171875 2.734375 1.953125 2.734375 -1.171875 1.171875 -1.171875 -1.953125 2.734375 2.734375 1.171875 -2.734375 -2.734375 1.953125 -1.171875 -2.734375 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -2.734375 -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" >
89.953 90.0 95.0 100.0 105.0 110.0 115.0 120.0 121.536 125.0 130.0 133.071 135.0 140.0 144.607 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 434.073 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.204 0.978 1.268 1.417 1.464 1.437 1.354 1.316 1.316 1.316 1.316 1.341 1.405 1.464 1.473 1.585 1.698 1.814 1.935 2.06 2.191 2.329 2.475 2.627 2.787 2.954 3.129 3.31 3.496 3.688 3.884 4.084 4.287 4.491 4.697 4.904 5.111 5.319 5.526 5.733 5.94 6.146 6.351 6.555 6.759 6.961 7.163 7.364 7.563 7.761 7.958 8.154 8.348 8.54 8.73 8.918 9.103 9.285 9.464 9.638 9.808 9.972 10.128 10.277 10.417 10.545 10.661 10.763 10.849 10.916 10.965 10.993 11.0 11.0 10.995 10.982 10.962 10.936 10.903 10.864 10.819 10.769 10.713 10.652 10.587 10.517 10.443 10.365 10.283 10.198 10.109 10.018 9.924 9.828 9.729 9.629 9.526 9.422 9.316 9.209 9.101 8.992 8.881 8.771 8.659 8.547 8.435 8.323 8.21 8.098 7.986 7.873 7.761 7.65 7.539 7.428 7.318 7.209 7.1 6.992 6.885 6.778 6.673 6.568 6.464 6.362 6.26 6.159 6.06 5.961 5.864 5.768 5.673 5.578 5.486 5.394 5.303 5.214 5.126 5.039 4.953 4.869 4.785 4.703 4.622 4.542 4.463 4.386 4.309 4.234 4.16 4.087 4.015 3.944 3.875 3.806 3.739 3.673 3.607 3.543 3.48 3.418 3.357 3.297 3.238 3.179 3.122 3.066 3.011 2.957 2.903 2.851 2.799 2.749 2.699 2.65 2.602 2.554 2.508 2.462 2.418 2.374 2.33 2.288 2.246 2.205 2.165

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.464" PeakHeight="110.0" Num="3" Error="0.0">
-28.037 9.779 -1.789
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.464" EndFrequency="11.0" PeakHeight="434.073" Num="5" zHalfNm="320.429" Error="3.446">
-277.268 -22.626 16.341 -8.414 2.501
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="34.607" Depth="0.148"/>
<TopsideChapman PeakHeight="434.073" PeakDensity="1501240.8" PeakScaleHeight="83.485" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
