<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 19:40:00.000"
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) 19:40:00</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">
FF202628810151940009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.529" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.174" 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="10.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="9.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="492.411" 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="2.229" 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="378.961" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="269.762" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.469" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="150.322" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.817" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.017" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="169.060" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="89">
<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 10.15 10.2 10.25 10.3 10.35
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 328.333 331.667 335.000 335.000 335.000 335.000 340.000 340.000 340.000 342.500 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 352.637 355.274 357.912 360.549 363.186 365.823 368.461 371.098 373.735 376.372 379.010 381.647 384.284 386.921 389.559 392.196 394.833 397.470 400.107 402.745 405.382 408.019 410.656 413.294 415.931 418.568 421.205 423.843 426.480 429.117 431.754 434.391 437.029 439.666 442.303 444.940 447.578 450.215 452.852 455.489 458.127 460.764 463.401 466.038 468.676 471.313 473.950 476.587 479.224 481.862 484.499 487.136 489.773 492.411 495.048 500.000 505.000 510.000 520.000 525.000 535.000 545.000 555.000 565.000 580.000 595.000 610.000 635.000 658.672
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 78 51 0 63 69 0 72 66 48 75 0 69 0 72 72 72 0 72 69 72 0 51 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 1.953125 -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 1.953125 -2.734375 0.390625 -1.953125 -1.953125 1.171875 -0.390625 -2.734375 -1.953125 0.390625 2.734375 1.171875 1.171875 2.734375 1.171875 -2.734375 1.171875 2.734375 1.953125 1.953125 0.390625 -0.390625 -2.734375 -2.734375 2.734375 0.390625 2.734375 -1.953125 -0.390625 -1.171875 -1.171875 -1.171875 -2.734375 -0.390625 -2.734375 -1.953125 2.734375 1.953125 -1.171875 0.390625 -1.171875 2.734375 1.953125 2.734375 0.390625 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" >
89.7 90.0 95.0 100.0 105.0 110.0 115.0 116.976 120.0 123.951 125.0 130.0 130.927 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 378.961 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.226 1.495 1.93 2.157 2.229 2.164 2.101 2.101 2.101 2.12 2.212 2.229 2.352 2.504 2.66 2.82 2.984 3.152 3.325 3.502 3.683 3.866 4.053 4.242 4.433 4.626 4.819 5.014 5.208 5.403 5.598 5.792 5.986 6.18 6.373 6.566 6.757 6.948 7.138 7.328 7.516 7.702 7.888 8.072 8.254 8.435 8.613 8.788 8.96 9.128 9.291 9.448 9.598 9.741 9.873 9.993 10.099 10.19 10.261 10.313 10.343 10.35 10.35 10.344 10.331 10.311 10.284 10.25 10.21 10.165 10.113 10.056 9.995 9.928 9.857 9.782 9.703 9.621 9.535 9.446 9.355 9.261 9.164 9.065 8.965 8.862 8.758 8.653 8.547 8.439 8.331 8.222 8.113 8.003 7.893 7.782 7.672 7.561 7.451 7.341 7.232 7.122 7.014 6.905 6.798 6.691 6.585 6.48 6.375 6.272 6.169 6.067 5.967 5.867 5.769 5.671 5.575 5.48 5.386 5.293 5.201 5.111 5.021 4.933 4.846 4.761 4.676 4.593 4.511 4.43 4.35 4.272 4.195 4.119 4.044 3.97 3.898 3.826 3.756 3.687 3.619 3.552 3.487 3.422 3.359 3.296 3.235 3.175 3.115 3.057 3.0 2.944 2.888 2.834 2.781 2.729 2.677 2.627 2.577 2.528 2.481 2.434 2.387 2.342 2.298 2.254 2.211 2.169 2.128 2.087 2.048 2.009 1.97 1.933 1.896 1.86 1.824 1.789 1.755 1.721 1.688 1.656 1.624 1.593 1.563 1.533 1.503

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.229" PeakHeight="110.0" Num="3" Error="0.0">
-29.392 11.558 -2.466
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.229" EndFrequency="10.35" PeakHeight="378.961" Num="5" zHalfNm="269.762" Error="2.09">
-232.618 -26.454 15.06 -5.089 1.067
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="20.927" Depth="0.128"/>
<TopsideChapman PeakHeight="378.961" PeakDensity="1329063.2" PeakScaleHeight="80.017" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
