<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 15:10:00.000"
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="12.0">
<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" >
2026.10.20 (293) 15:10:00</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">
FF202629310201510009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.048" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.685" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="686.805" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="686.805" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="720.000" 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="3.389" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.360" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="436.067" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.087" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.919" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="227.325" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="66.825" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="123.768" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="270.330" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.520" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
686.805 689.254 691.940 694.896 698.168 701.809 705.883 710.475 715.000 720.000 730.000 735.000 745.000 760.000 770.000 790.000 812.892
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
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" >
-1.953125 -1.171875 -2.734375 -1.171875 1.953125 1.171875 1.953125 2.734375 0.390625 -2.734375 -1.171875 -0.390625 -1.171875 -2.734375 -1.953125 1.953125 -1.171875
</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" >
89.484 90.0 95.0 100.0 105.0 110.0 111.554 113.107 114.661 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 436.067 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.28 2.933 3.279 3.389 3.266 3.266 3.389 3.398 3.526 3.645 3.76 3.873 3.986 4.101 4.217 4.336 4.459 4.584 4.713 4.845 4.98 5.118 5.258 5.4 5.543 5.686 5.829 5.97 6.11 6.247 6.383 6.516 6.646 6.773 6.898 7.02 7.14 7.257 7.372 7.484 7.595 7.703 7.81 7.915 8.018 8.12 8.22 8.319 8.416 8.513 8.608 8.702 8.794 8.886 8.977 9.066 9.155 9.242 9.328 9.412 9.495 9.575 9.654 9.729 9.801 9.868 9.93 9.985 10.031 10.066 10.09 10.1 10.1 10.099 10.095 10.088 10.078 10.065 10.049 10.03 10.009 9.985 9.959 9.93 9.899 9.866 9.83 9.793 9.753 9.712 9.669 9.624 9.577 9.529 9.479 9.427 9.375 9.32 9.265 9.209 9.151 9.092 9.032 8.972 8.91 8.847 8.784 8.72 8.655 8.59 8.524 8.458 8.391 8.324 8.256 8.188 8.119 8.051 7.982 7.912 7.843 7.774 7.704 7.635 7.565 7.495 7.426 7.356 7.286 7.217 7.148 7.078 7.009 6.941 6.872 6.804 6.735 6.667 6.6 6.533 6.465 6.399 6.332 6.266 6.201 6.135 6.07 6.006 5.942 5.878 5.815 5.752 5.689 5.627 5.566 5.505 5.444 5.384 5.324 5.265 5.206 5.148 5.09 5.032 4.975 4.919 4.863 4.808 4.753 4.698 4.645 4.591 4.538 4.486 4.434 4.382 4.331 4.281 4.231 4.182 4.133 4.084 4.036 3.989 3.942 3.895

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.389" PeakHeight="110.0" Num="3" Error="0.0">
-30.499 13.15 -3.167
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.389" EndFrequency="10.1" PeakHeight="436.067" Num="5" zHalfNm="260.087" Error="9.985">
-294.056 -46.416 29.567 -15.509 5.008
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.661" Depth="0.123"/>
<TopsideChapman PeakHeight="436.067" PeakDensity="1265632.8" PeakScaleHeight="123.768" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
