<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 20:50:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, One of F2 cusps was derived from the other</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" >
2026.11.01 (305) 20:50:00</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">
FF202630511012050009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.276" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.124" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="490.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="490.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="585.000" 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="1.007" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="451.188" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="346.888" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.199" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="150.490" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.969" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="76.811" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="156.510" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="44">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
490.000 495.000 495.000 500.000 505.000 510.000 510.000 515.000 515.000 520.000 525.000 525.000 530.000 530.000 535.000 540.000 545.000 545.000 550.000 555.000 560.000 565.000 565.000 570.000 575.000 580.000 580.000 585.000 585.000 585.000 590.000 600.000 600.000 605.000 610.000 616.261 623.115 630.650 638.973 648.215 658.535 670.136 683.271 698.267
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 51 63 57 51 63 57 63 0 0 60 60 54 60 57 57 0 48 63 60 60 60 63 63 60 60 63 54 0 57 54 48 54 54 0 51 45 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.263 95.0 100.0 105.0 110.0 115.0 120.0 125.0 126.796 130.0 135.0 140.0 143.593 145.0 150.0 155.0 160.0 160.389 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 451.188 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.67 0.872 0.975 1.007 0.99 0.938 0.844 0.798 0.798 0.798 0.798 0.798 0.816 0.878 0.94 1.002 1.007 1.103 1.2 1.296 1.393 1.493 1.597 1.707 1.822 1.945 2.075 2.212 2.359 2.513 2.677 2.848 3.027 3.214 3.406 3.604 3.807 4.013 4.222 4.433 4.646 4.86 5.074 5.289 5.504 5.719 5.933 6.147 6.361 6.574 6.786 6.997 7.207 7.417 7.625 7.831 8.036 8.239 8.44 8.638 8.832 9.023 9.21 9.391 9.565 9.732 9.89 10.036 10.171 10.29 10.393 10.477 10.541 10.582 10.599 10.6 10.597 10.587 10.568 10.541 10.507 10.466 10.418 10.364 10.304 10.239 10.168 10.092 10.012 9.927 9.839 9.746 9.651 9.552 9.451 9.347 9.241 9.133 9.023 8.911 8.798 8.684 8.569 8.453 8.336 8.219 8.102 7.984 7.866 7.748 7.631 7.513 7.396 7.28 7.164 7.049 6.934 6.82 6.707 6.595 6.484 6.374 6.265 6.157 6.051 5.945 5.841 5.738 5.636 5.535 5.436 5.338 5.241 5.146 5.052 4.959 4.868 4.778 4.689 4.602 4.516 4.431 4.348 4.266 4.185 4.106 4.028 3.951 3.876 3.802 3.729 3.657 3.587 3.518 3.45 3.383 3.318 3.253 3.19 3.128 3.067 3.007 2.948 2.891 2.834 2.779 2.724 2.67 2.618 2.566 2.516 2.466 2.418 2.37 2.323 2.277 2.232 2.188 2.144 2.102 2.06 2.019 1.979 1.94 1.901 1.863

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.007" PeakHeight="110.0" Num="3" Error="0.0">
-26.536 8.029 -1.23
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.007" EndFrequency="10.6" PeakHeight="451.188" Num="5" zHalfNm="346.888" Error="4.757">
-278.162 -22.884 15.107 -8.526 3.666
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="50.389" Depth="0.209"/>
<TopsideChapman PeakHeight="451.188" PeakDensity="1394044.6" PeakScaleHeight="76.811" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
