<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 18:10:00.000"
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="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" >
2026.10.29 (302) 18:10:00</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">
FF202630210291810009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="9.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.473" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.371" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="525.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="525.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="525.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.889" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="364.418" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="233.329" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.194" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="178.570" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.766" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="97.692" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="191.130" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.960" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="11">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
525.000 535.000 540.000 550.000 560.000 575.000 590.000 610.690 638.138 676.300 732.970
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 60 57 60 54 57 57 0 0 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 1.953125 2.734375
</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" >
89.565 90.0 95.0 100.0 105.0 110.0 113.719 115.0 117.437 120.0 121.156 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 364.418 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.942 2.501 2.795 2.889 2.767 2.767 2.767 2.851 2.889 3.001 3.147 3.295 3.446 3.6 3.758 3.919 4.083 4.251 4.422 4.596 4.773 4.951 5.131 5.312 5.493 5.674 5.855 6.036 6.214 6.392 6.567 6.74 6.91 7.077 7.242 7.403 7.56 7.713 7.863 8.007 8.147 8.282 8.412 8.536 8.653 8.764 8.869 8.966 9.055 9.136 9.209 9.273 9.327 9.372 9.407 9.431 9.446 9.45 9.45 9.447 9.439 9.427 9.411 9.39 9.366 9.337 9.305 9.269 9.23 9.187 9.142 9.094 9.042 8.988 8.932 8.873 8.813 8.749 8.685 8.618 8.549 8.479 8.407 8.335 8.26 8.185 8.108 8.031 7.953 7.874 7.794 7.714 7.633 7.552 7.47 7.388 7.306 7.223 7.141 7.058 6.976 6.893 6.811 6.728 6.646 6.564 6.483 6.402 6.321 6.24 6.16 6.08 6.001 5.922 5.844 5.766 5.689 5.613 5.537 5.462 5.387 5.313 5.239 5.167 5.095 5.023 4.953 4.883 4.814 4.745 4.678 4.611 4.544 4.479 4.414 4.35 4.287 4.224 4.162 4.101 4.041 3.981 3.923 3.864 3.807 3.75 3.694 3.639 3.585 3.531 3.478 3.426 3.374 3.323 3.273 3.223 3.174 3.126 3.078 3.031 2.985 2.94 2.895 2.85 2.807 2.764 2.721 2.679 2.638 2.597 2.557 2.518 2.479 2.441 2.403 2.366 2.329 2.293 2.257 2.222 2.188 2.154 2.12 2.087 2.055 2.022

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.889" PeakHeight="110.0" Num="3" Error="0.0">
-30.1 12.563 -2.898
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.889" EndFrequency="9.45" PeakHeight="364.418" Num="5" zHalfNm="233.329" Error="1.479">
-240.745 -4.323 2.817 -1.594 0.583
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.156" Depth="0.122"/>
<TopsideChapman PeakHeight="364.418" PeakDensity="1107971.5" PeakScaleHeight="97.692" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
