<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 20:00:00.000"
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 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" >
2026.10.15 (288) 20:00:00</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">
FF202628810152000009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.498" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.982" 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="10.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="501.440" 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="1.980" 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="/" />
<URSI ID="92" Val="389.060" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="272.455" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.464" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="162.698" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.090" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="85.995" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="169.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.920" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="91">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 310.000 310.000 310.000 310.000 310.000 315.000 320.000 320.000 320.000 320.000 320.000 320.000 321.667 323.333 325.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 343.046 346.092 349.138 352.184 355.230 358.276 361.322 364.368 367.414 370.460 373.506 376.552 379.598 382.644 385.691 388.737 391.783 394.829 397.875 400.921 403.967 407.013 410.059 413.105 416.151 419.197 422.243 425.289 428.335 431.381 434.427 437.473 440.519 443.565 446.611 449.657 452.703 455.749 458.795 461.841 464.887 467.933 470.980 474.026 477.072 480.118 483.164 486.210 489.256 492.302 495.348 498.394 501.440 505.000 515.000 520.000 525.000 535.000 545.000 550.000 565.000 575.000 590.000 605.000 625.000 645.000 670.000 699.240
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 81 0 0 72 0 0 75 0 78 0 72 75 0 0 0 78 75 75 75 75 75 75 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
</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 1.171875 0.390625 -0.390625 2.734375 -0.390625 1.171875 2.734375 -1.171875 1.953125 2.734375 -1.171875 -0.390625 -0.390625 1.953125 -1.953125 -2.734375 2.734375 1.953125 2.734375 1.953125 -1.953125 -1.171875 -1.171875 1.171875 1.953125 2.734375 1.953125 2.734375 -1.953125 -1.171875 0.390625 1.953125 -1.171875 -1.953125 -2.734375 -0.390625 -2.734375 -2.734375 2.734375 2.734375 -0.390625 -0.390625 -2.734375 1.953125 0.390625 2.734375 -2.734375 -1.953125 1.171875 -0.390625 -2.734375 -2.734375 2.734375 -2.734375 2.734375 -1.171875 0.390625 2.734375 -0.390625 -0.390625 1.171875 0.390625 -1.953125 1.171875
</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" >
89.766 90.0 95.0 100.0 105.0 110.0 115.0 118.321 120.0 125.0 126.641 130.0 134.962 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 389.06 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22 1.327 1.715 1.916 1.98 1.933 1.847 1.847 1.847 1.847 1.901 1.98 1.981 2.125 2.266 2.408 2.554 2.704 2.861 3.026 3.198 3.379 3.568 3.765 3.97 4.181 4.398 4.62 4.844 5.07 5.296 5.523 5.748 5.971 6.192 6.41 6.626 6.839 7.048 7.254 7.457 7.656 7.851 8.043 8.23 8.414 8.593 8.767 8.936 9.1 9.257 9.408 9.552 9.688 9.815 9.932 10.038 10.132 10.214 10.282 10.335 10.373 10.395 10.4 10.4 10.395 10.384 10.366 10.343 10.313 10.279 10.238 10.193 10.143 10.089 10.03 9.967 9.9 9.83 9.756 9.68 9.6 9.518 9.433 9.346 9.256 9.165 9.072 8.977 8.881 8.784 8.685 8.586 8.485 8.384 8.283 8.18 8.078 7.975 7.872 7.768 7.665 7.562 7.459 7.356 7.254 7.152 7.05 6.949 6.848 6.748 6.649 6.55 6.452 6.355 6.258 6.163 6.068 5.974 5.881 5.789 5.698 5.608 5.519 5.431 5.344 5.258 5.173 5.089 5.006 4.924 4.843 4.763 4.684 4.607 4.53 4.454 4.38 4.306 4.234 4.163 4.092 4.023 3.954 3.887 3.821 3.756 3.691 3.628 3.566 3.504 3.444 3.384 3.326 3.268 3.212 3.156 3.101 3.047 2.994 2.942 2.89 2.84 2.79 2.741 2.693 2.646 2.599 2.553 2.508 2.464 2.421 2.378 2.336 2.295 2.254 2.214 2.175 2.136 2.099 2.061 2.025 1.989 1.954 1.919 1.885 1.851

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.98" PeakHeight="110.0" Num="3" Error="0.0">
-29.038 11.076 -2.272
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.98" EndFrequency="10.4" PeakHeight="389.06" Num="5" zHalfNm="272.455" Error="3.869">
-250.592 -7.681 7.309 -5.203 2.069
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="24.962" Depth="0.133"/>
<TopsideChapman PeakHeight="389.06" PeakDensity="1341935.5" PeakScaleHeight="85.995" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
