<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 12:30:00.000"
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" >
2026.10.15 (288) 12:30:00</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">
FF202628810151230009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.631" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.753" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="10.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="481.124" 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="3.211" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.277" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="345.826" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="243.003" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.013" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="133.725" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.262" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.193" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="175.390" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.270" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="92">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 326.667 328.333 330.000 331.667 333.333 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 347.500 350.000 352.210 354.420 356.630 358.841 361.051 363.261 365.471 367.681 369.891 372.102 374.312 376.522 378.732 380.942 383.152 385.363 387.573 389.783 391.993 394.203 396.413 398.624 400.834 403.044 405.254 407.464 409.674 411.885 414.095 416.305 418.515 420.725 422.935 425.146 427.356 429.566 431.776 433.986 436.196 438.407 440.617 442.827 445.037 447.247 449.457 451.668 453.878 456.088 458.298 460.508 462.718 464.929 467.139 469.316 471.748 474.484 477.583 481.124 485.208 489.970 495.000 500.000 510.000 520.000 535.000 550.000 575.000 612.853
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 69 69 60 0 66 69 69 0 63 0 66 0 69 69 69 72 0 69 72 0 69 54 72 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 -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 -1.171875 -0.390625 0.390625 1.171875 -2.734375 -2.734375 -1.171875 -1.171875 1.171875 -1.953125 -0.390625 -1.953125 -2.734375 -2.734375 0.390625 -2.734375 0.390625 -2.734375 1.953125 1.953125 2.734375 0.390625 2.734375 0.390625 -2.734375 -1.171875 2.734375 1.953125 -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" >
89.511 90.0 95.0 100.0 105.0 110.0 112.295 114.59 115.0 116.885 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 345.826 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.159 2.779 3.106 3.211 3.089 3.089 3.111 3.211 3.334 3.526 3.713 3.895 4.071 4.244 4.413 4.58 4.744 4.907 5.069 5.23 5.39 5.55 5.71 5.871 6.032 6.193 6.356 6.519 6.684 6.85 7.017 7.186 7.357 7.529 7.703 7.879 8.056 8.235 8.416 8.598 8.78 8.963 9.145 9.326 9.505 9.679 9.847 10.005 10.151 10.281 10.389 10.473 10.527 10.55 10.55 10.547 10.535 10.515 10.487 10.451 10.408 10.358 10.301 10.239 10.171 10.097 10.019 9.936 9.848 9.757 9.662 9.563 9.462 9.357 9.251 9.142 9.031 8.918 8.804 8.688 8.571 8.454 8.335 8.216 8.097 7.977 7.857 7.738 7.618 7.499 7.38 7.261 7.143 7.026 6.909 6.794 6.679 6.565 6.452 6.34 6.229 6.12 6.011 5.904 5.798 5.694 5.59 5.488 5.387 5.288 5.19 5.094 4.998 4.905 4.812 4.721 4.632 4.544 4.457 4.371 4.287 4.205 4.123 4.044 3.965 3.888 3.812 3.737 3.664 3.592 3.522 3.452 3.384 3.317 3.251 3.187 3.123 3.061 3.0 2.94 2.882 2.824 2.767 2.712 2.658 2.604 2.552 2.5 2.45 2.401 2.352 2.305 2.258 2.213 2.168 2.124 2.081 2.039 1.997 1.957 1.917 1.878 1.84 1.802 1.766 1.73 1.695 1.66 1.626 1.593 1.561 1.529 1.498 1.467 1.437 1.408 1.379 1.351 1.323 1.296 1.269 1.244 1.218 1.193 1.169 1.145

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.211" PeakHeight="110.0" Num="3" Error="0.0">
-30.366 12.953 -3.076
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.211" EndFrequency="10.55" PeakHeight="345.826" Num="5" zHalfNm="243.003" Error="1.637">
-198.683 -45.824 16.373 -0.346 -0.461
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.885" Depth="0.122"/>
<TopsideChapman PeakHeight="345.826" PeakDensity="1380924.4" PeakScaleHeight="75.193" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
