<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 19:10:00.000"
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) 19:10:00</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">
FF202628810151910009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.408" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.325" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="88" Val="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="556.250" 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="2.514" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="397.501" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.284" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.414" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="177.563" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.620" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="95.388" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="196.810" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.710" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="84">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 335.000 335.000 335.000 340.000 341.667 343.333 345.000 346.667 348.333 350.000 350.000 350.000 351.667 353.333 355.000 356.667 358.333 360.000 362.500 365.000 365.000 365.000 368.678 372.356 376.034 379.712 383.389 387.067 390.745 394.423 398.101 401.779 405.457 409.135 412.812 416.490 420.168 423.846 427.524 431.202 434.880 438.558 442.235 445.913 449.591 453.269 456.947 460.625 464.303 467.981 471.658 475.336 479.014 482.692 486.370 490.048 493.726 497.404 501.081 504.759 508.437 512.115 515.793 519.471 523.149 526.827 530.504 534.182 537.860 541.538 545.216 548.894 552.572 556.250 570.000 580.000 595.000 610.000 630.000 650.000 675.000 705.000 739.615
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 0 75 63 0 0 0 0 0 63 72 75 0 0 75 0 48 75 0 72 72 69 54 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 2.734375 -0.390625 0.390625 2.734375 -0.390625 1.953125 -1.171875 -2.734375 -0.390625 2.734375 -1.953125 1.953125 -2.734375 -1.953125 1.953125 2.734375 1.953125 -0.390625 -1.953125 1.171875 1.171875 -0.390625 1.171875 -1.171875 2.734375 -2.734375 -0.390625 2.734375 -2.734375 -0.390625 -2.734375 -1.953125 2.734375 -0.390625 -1.171875 1.171875 0.390625 0.390625 0.390625 -1.171875 1.953125 -1.953125 -2.734375 2.734375 -1.171875 1.953125 -2.734375 0.390625 0.390625 1.171875 1.171875 0.390625 0.390625 -2.734375 -1.171875 0.390625 -1.953125
</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" >
89.636 90.0 95.0 100.0 105.0 110.0 115.0 115.512 120.0 121.023 125.0 126.535 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 397.501 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.23 1.688 2.177 2.433 2.514 2.412 2.39 2.39 2.39 2.479 2.514 2.613 2.754 2.895 3.038 3.184 3.333 3.485 3.641 3.8 3.963 4.129 4.298 4.47 4.643 4.818 4.995 5.171 5.348 5.524 5.7 5.876 6.05 6.223 6.395 6.565 6.734 6.901 7.067 7.231 7.393 7.553 7.711 7.867 8.021 8.173 8.323 8.47 8.614 8.755 8.892 9.026 9.156 9.28 9.4 9.513 9.619 9.717 9.807 9.886 9.954 10.011 10.054 10.083 10.098 10.1 10.099 10.094 10.084 10.068 10.048 10.023 9.994 9.96 9.923 9.881 9.836 9.788 9.736 9.68 9.622 9.561 9.498 9.431 9.363 9.292 9.219 9.144 9.068 8.99 8.91 8.829 8.746 8.662 8.578 8.492 8.405 8.318 8.23 8.141 8.052 7.963 7.873 7.783 7.693 7.602 7.512 7.421 7.331 7.241 7.151 7.061 6.972 6.883 6.794 6.705 6.618 6.53 6.443 6.357 6.271 6.186 6.101 6.017 5.934 5.852 5.77 5.689 5.608 5.529 5.45 5.372 5.294 5.218 5.142 5.067 4.993 4.92 4.847 4.776 4.705 4.635 4.566 4.498 4.43 4.364 4.298 4.233 4.169 4.106 4.043 3.981 3.921 3.861 3.801 3.743 3.685 3.628 3.572 3.517 3.462 3.409 3.356 3.303 3.252 3.201 3.151 3.102 3.053 3.005 2.958 2.911 2.866 2.82 2.776 2.732 2.689 2.646 2.604 2.563 2.522 2.482 2.443 2.404 2.366 2.328 2.291

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.514" PeakHeight="110.0" Num="3" Error="0.0">
-29.731 12.033 -2.666
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.514" EndFrequency="10.1" PeakHeight="397.501" Num="5" zHalfNm="267.284" Error="3.202">
-258.827 -21.424 13.174 -5.434 1.545
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="16.535" Depth="0.124"/>
<TopsideChapman PeakHeight="397.501" PeakDensity="1265632.8" PeakScaleHeight="95.388" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
