<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 14:40:00.000"
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="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) 14:40:00</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">
FF202630611021440009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="29" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.683" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.639" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="2.750" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="2.810" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="435.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="435.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="80.723" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="461.552" 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="3.383" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.357" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="321.270" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="217.409" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.792" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="139.475" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.058" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.877" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="156.160" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.670" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="25">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
435.000 435.000 435.000 440.000 440.000 440.000 442.500 445.000 450.000 450.000 450.000 455.000 458.095 461.552 465.438 469.837 474.860 480.649 487.394 495.352 504.883 516.505 530.991 549.547 574.171
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 57 57 48 57 0 54 57 54 57 54 51 51 51 48 51 51 45 51 48 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 0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="2">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.75 2.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
80.723 82.347
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 57
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -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" >
89.579 90.0 95.0 100.0 105.0 110.0 111.581 113.162 114.743 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 321.27 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 1.888 2.433 2.719 2.81 2.708 2.708 2.81 2.82 3.011 3.195 3.378 3.565 3.759 3.961 4.172 4.393 4.622 4.858 5.098 5.341 5.584 5.826 6.064 6.297 6.526 6.75 6.969 7.182 7.391 7.594 7.793 7.988 8.179 8.365 8.548 8.726 8.9 9.07 9.235 9.394 9.547 9.692 9.829 9.953 10.064 10.157 10.23 10.278 10.299 10.3 10.298 10.287 10.267 10.24 10.206 10.164 10.115 10.061 10.0 9.933 9.861 9.784 9.703 9.617 9.528 9.435 9.338 9.239 9.137 9.032 8.925 8.816 8.706 8.594 8.48 8.366 8.25 8.134 8.018 7.901 7.783 7.666 7.548 7.431 7.314 7.198 7.081 6.966 6.851 6.737 6.623 6.511 6.399 6.289 6.179 6.07 5.963 5.857 5.752 5.648 5.546 5.445 5.345 5.246 5.149 5.053 4.959 4.866 4.774 4.684 4.595 4.507 4.421 4.336 4.253 4.17 4.09 4.01 3.932 3.856 3.78 3.706 3.633 3.562 3.491 3.422 3.355 3.288 3.223 3.159 3.096 3.034 2.973 2.914 2.855 2.798 2.742 2.687 2.632 2.579 2.527 2.476 2.426 2.377 2.329 2.282 2.236 2.19 2.146 2.102 2.059 2.017 1.976 1.936 1.897 1.858 1.82 1.783 1.746 1.711 1.676 1.641 1.608 1.575 1.543 1.511 1.48 1.45 1.42 1.391 1.362 1.334 1.307 1.28 1.254 1.228 1.203 1.178 1.154 1.13 1.107 1.084 1.062 1.04 1.019 0.998

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.81" PeakHeight="110.0" Num="3" Error="0.0">
-30.028 12.459 -2.852
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.81" EndFrequency="10.3" PeakHeight="321.27" Num="5" zHalfNm="217.409" Error="4.101">
-195.152 -19.621 12.906 -6.985 2.325
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.743" Depth="0.102"/>
<TopsideChapman PeakHeight="321.27" PeakDensity="1316253.1" PeakScaleHeight="74.877" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
