<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 18:50:00.000"
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="14.0">
<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: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.10.30 (303) 18:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202630310301850009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.641" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.201" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="425.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="425.000" 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="0.550" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="481.278" 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="2.644" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="331.946" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="233.156" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.354" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="131.237" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="39.602" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="69.498" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="152.570" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.490" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="33">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
425.000 425.000 427.500 430.000 430.000 432.500 435.000 437.500 440.000 440.000 440.000 445.000 450.000 450.000 450.000 455.000 460.000 460.000 465.000 465.000 470.000 475.000 477.965 481.278 485.005 489.228 494.053 499.618 506.109 513.778 522.977 534.213 548.250
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 63 0 0 0 60 63 54 63 57 63 63 57 54 60 60 60 60 54 54 0 60 63 60 57 57 54 0 51 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 -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" >
89.611 90.0 95.0 100.0 105.0 110.0 114.873 115.0 119.746 120.0 124.619 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 331.946 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.232 1.776 2.289 2.558 2.644 2.521 2.521 2.521 2.527 2.644 2.659 2.845 3.022 3.2 3.382 3.572 3.772 3.982 4.204 4.435 4.674 4.916 5.161 5.403 5.642 5.876 6.105 6.327 6.543 6.754 6.959 7.159 7.355 7.547 7.735 7.92 8.102 8.282 8.459 8.634 8.807 8.977 9.146 9.312 9.475 9.634 9.788 9.932 10.063 10.174 10.255 10.296 10.3 10.298 10.287 10.266 10.236 10.197 10.15 10.095 10.034 9.965 9.89 9.809 9.723 9.631 9.535 9.435 9.331 9.224 9.113 9.0 8.884 8.766 8.646 8.524 8.401 8.277 8.152 8.026 7.9 7.774 7.647 7.521 7.395 7.269 7.143 7.018 6.894 6.771 6.649 6.527 6.407 6.288 6.17 6.053 5.938 5.824 5.711 5.6 5.49 5.382 5.275 5.17 5.067 4.965 4.864 4.766 4.669 4.573 4.479 4.387 4.296 4.207 4.119 4.033 3.949 3.866 3.784 3.704 3.626 3.549 3.474 3.4 3.327 3.256 3.186 3.118 3.051 2.986 2.921 2.858 2.796 2.736 2.677 2.619 2.562 2.506 2.452 2.398 2.346 2.295 2.245 2.196 2.148 2.101 2.055 2.01 1.966 1.922 1.88 1.839 1.799 1.759 1.72 1.682 1.645 1.609 1.574 1.539 1.505 1.472 1.439 1.408 1.376 1.346 1.316 1.287 1.259 1.231 1.204 1.177 1.151 1.126 1.101 1.076 1.052 1.029 1.006 0.984 0.962 0.941 0.92 0.9 0.88 0.86 0.841

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.644" PeakHeight="110.0" Num="3" Error="0.0">
-29.865 12.226 -2.75
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.644" EndFrequency="10.3" PeakHeight="331.946" Num="5" zHalfNm="233.156" Error="4.734">
-188.361 -32.47 21.045 -10.815 3.274
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="14.619" Depth="0.123"/>
<TopsideChapman PeakHeight="331.946" PeakDensity="1316253.1" PeakScaleHeight="69.498" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
