<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 14:00:00.000"
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="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="1 2 0 0 0 0 0 0 0 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: F2x cusp not found, 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" >
2026.11.02 (306) 14:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630611021400009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="29" >
<URSI ID="00" Val="9.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.747" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.192" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="1.850" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="1.910" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="415.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="415.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="85.149" Name="h`E" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="445.000" 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="3.366" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.349" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="321.720" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="230.206" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.566" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="127.064" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="34.731" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.888" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="136.300" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="24">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
415.000 416.250 417.500 418.750 420.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 455.000 460.000 470.000 475.000 483.587 494.031 507.008 523.567 545.426
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 51 60 54 60 0 57 0 54 0 0 51 0 45 51 48 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
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="2">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.85 1.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
85.149 85.473
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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" >
89.787 90.0 95.0 100.0 105.0 110.0 111.651 113.302 114.953 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 321.72 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.218 1.279 1.654 1.848 1.91 1.84 1.84 1.91 1.912 2.08 2.243 2.408 2.578 2.756 2.945 3.144 3.354 3.575 3.807 4.047 4.293 4.544 4.797 5.051 5.304 5.555 5.803 6.048 6.289 6.527 6.761 6.991 7.217 7.44 7.658 7.872 8.082 8.287 8.486 8.68 8.866 9.044 9.212 9.368 9.51 9.634 9.738 9.819 9.873 9.898 9.9 9.898 9.886 9.863 9.832 9.792 9.743 9.686 9.622 9.551 9.474 9.39 9.302 9.208 9.11 9.007 8.901 8.792 8.679 8.564 8.447 8.327 8.206 8.083 7.959 7.835 7.709 7.583 7.457 7.331 7.204 7.078 6.953 6.827 6.703 6.579 6.457 6.335 6.214 6.094 5.976 5.859 5.743 5.629 5.516 5.405 5.295 5.187 5.08 4.975 4.872 4.77 4.67 4.571 4.474 4.379 4.286 4.194 4.104 4.015 3.928 3.843 3.759 3.677 3.597 3.518 3.44 3.364 3.29 3.217 3.146 3.076 3.007 2.94 2.875 2.81 2.747 2.686 2.625 2.566 2.508 2.452 2.397 2.342 2.289 2.238 2.187 2.137 2.089 2.041 1.995 1.95 1.905 1.862 1.819 1.778 1.737 1.698 1.659 1.621 1.584 1.548 1.512 1.478 1.444 1.411 1.378 1.347 1.316 1.286 1.256 1.227 1.199 1.172 1.145 1.118 1.093 1.067 1.043 1.019 0.996 0.973 0.95 0.928 0.907 0.886 0.866 0.846 0.826 0.807 0.789 0.771 0.753 0.735 0.718 0.702 0.686

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.91" PeakHeight="110.0" Num="3" Error="0.0">
-28.923 10.924 -2.214
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.91" EndFrequency="9.9" PeakHeight="321.72" Num="5" zHalfNm="230.206" Error="3.627">
-197.842 -15.436 10.167 -5.736 2.08
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.953" Depth="0.07"/>
<TopsideChapman PeakHeight="321.72" PeakDensity="1216005.0" PeakScaleHeight="66.888" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
