<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 13:00:00.000"
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) 13:00:00</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">
FF202628810151300009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.536" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.623" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="507.443" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.289" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.314" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="360.215" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="244.578" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.113" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="149.548" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.594" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="83.602" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="192.950" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="88">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 320.000 323.333 326.667 330.000 330.000 332.500 335.000 335.000 335.000 335.000 345.000 345.000 345.000 345.000 350.000 350.000 352.500 355.000 358.333 361.667 365.000 365.000 367.645 370.289 372.934 375.579 378.223 380.868 383.513 386.158 388.802 391.447 394.092 396.736 399.381 402.026 404.670 407.315 409.960 412.604 415.249 417.894 420.539 423.183 425.828 428.473 431.117 433.762 436.407 439.051 441.696 444.341 446.986 449.630 452.275 454.920 457.564 460.209 462.854 465.498 468.143 470.788 473.432 476.077 478.722 481.367 484.011 486.656 489.301 491.945 494.590 496.612 498.862 501.381 504.220 507.443 511.135 515.406 520.404 525.000 535.000 540.000 555.000 570.000 585.000 615.000 656.274
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 60 0 0 0 63 54 60 0 66 66 57 66 69 66 66 69 0 69 0 0 69 75 66 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 -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 0.390625 -0.390625 0.390625 -0.390625 -2.734375 0.390625 -1.953125 2.734375 2.734375 0.390625 -1.953125 -1.953125 0.390625 -0.390625 -0.390625 0.390625 2.734375 -1.171875 1.953125 2.734375 -0.390625 1.171875 -2.734375 1.171875 -1.171875 -1.953125 0.390625 -0.390625 -1.953125 1.171875 -2.734375 -1.953125 -0.390625 0.390625 -0.390625 -1.953125 -1.171875 2.734375
</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" >
89.5 90.0 95.0 100.0 105.0 110.0 111.966 113.932 115.0 115.898 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 360.215 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.212 2.846 3.182 3.289 3.167 3.167 3.233 3.289 3.437 3.615 3.79 3.962 4.131 4.298 4.462 4.625 4.786 4.946 5.105 5.262 5.419 5.575 5.731 5.886 6.041 6.195 6.35 6.505 6.659 6.815 6.97 7.125 7.281 7.438 7.595 7.752 7.91 8.068 8.227 8.386 8.545 8.704 8.863 9.022 9.179 9.336 9.489 9.64 9.786 9.926 10.058 10.179 10.285 10.374 10.442 10.485 10.5 10.5 10.497 10.486 10.469 10.445 10.416 10.38 10.338 10.291 10.239 10.182 10.121 10.055 9.986 9.912 9.835 9.755 9.671 9.585 9.496 9.405 9.312 9.216 9.119 9.02 8.919 8.818 8.715 8.611 8.506 8.401 8.295 8.188 8.081 7.974 7.867 7.76 7.653 7.546 7.439 7.332 7.226 7.121 7.016 6.911 6.807 6.704 6.602 6.5 6.399 6.299 6.2 6.102 6.005 5.909 5.813 5.719 5.626 5.534 5.443 5.353 5.264 5.176 5.09 5.004 4.92 4.836 4.754 4.673 4.593 4.515 4.437 4.36 4.285 4.211 4.138 4.065 3.994 3.925 3.856 3.788 3.721 3.656 3.591 3.527 3.465 3.403 3.343 3.283 3.225 3.167 3.11 3.055 3.0 2.946 2.893 2.841 2.79 2.739 2.69 2.641 2.594 2.547 2.5 2.455 2.411 2.367 2.324 2.282 2.24 2.199 2.159 2.12 2.081 2.043 2.006 1.969 1.933 1.898 1.863 1.829 1.795 1.763 1.73 1.699 1.667 1.637 1.607 1.577

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.289" PeakHeight="110.0" Num="3" Error="0.0">
-30.426 13.042 -3.116
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.289" EndFrequency="10.5" PeakHeight="360.215" Num="5" zHalfNm="244.578" Error="0.835">
-214.765 -46.37 19.361 -2.602 0.059
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.898" Depth="0.122"/>
<TopsideChapman PeakHeight="360.215" PeakDensity="1367866.0" PeakScaleHeight="83.602" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
