<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 20:30:00.000"
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) 20:30:00</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">
FF202630511012030009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.272" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.993" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="465.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="465.000" 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="10.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="580.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.435" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="456.883" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="331.661" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.362" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="178.364" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.548" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="93.114" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="183.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.900" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="54">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
8.35 8.4 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 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
465.000 467.500 470.000 472.500 475.000 477.500 480.000 485.000 485.000 490.000 490.000 495.000 497.500 500.000 500.000 505.000 505.000 510.000 510.000 515.000 515.000 520.000 525.000 530.000 535.000 535.000 540.000 542.500 545.000 555.000 560.000 565.000 565.000 567.500 570.000 575.000 580.000 580.000 585.000 595.000 600.000 605.000 610.000 620.000 630.000 640.000 650.000 662.338 676.387 692.528 711.267 733.286 759.528 791.338
</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 60 0 60 51 0 63 48 60 54 63 60 60 0 63 0 63 63 63 63 63 0 0 0 60 51 57 54 57 54 57 48 48 48 48 48 45 0 0 42 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 -1.171875 -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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 2.734375 -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" >
89.965 90.0 95.0 100.0 105.0 110.0 115.0 120.0 121.75 125.0 130.0 133.499 135.0 140.0 145.0 145.249 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 456.883 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.203 0.959 1.243 1.389 1.435 1.409 1.328 1.285 1.285 1.285 1.285 1.304 1.368 1.432 1.435 1.532 1.635 1.74 1.848 1.961 2.077 2.199 2.326 2.459 2.597 2.741 2.892 3.048 3.21 3.378 3.551 3.729 3.912 4.098 4.288 4.482 4.678 4.876 5.077 5.278 5.481 5.685 5.89 6.094 6.299 6.503 6.707 6.911 7.113 7.314 7.514 7.713 7.909 8.104 8.296 8.486 8.673 8.856 9.036 9.212 9.383 9.549 9.71 9.864 10.012 10.152 10.284 10.407 10.521 10.624 10.716 10.796 10.864 10.918 10.959 10.986 10.999 11.0 10.999 10.992 10.979 10.961 10.937 10.908 10.874 10.836 10.792 10.745 10.693 10.637 10.578 10.515 10.448 10.379 10.306 10.231 10.153 10.073 9.99 9.905 9.818 9.73 9.64 9.548 9.455 9.361 9.265 9.169 9.071 8.973 8.874 8.775 8.675 8.575 8.474 8.374 8.273 8.172 8.071 7.971 7.87 7.77 7.67 7.57 7.47 7.372 7.273 7.175 7.078 6.981 6.885 6.79 6.695 6.601 6.508 6.415 6.323 6.233 6.143 6.053 5.965 5.878 5.791 5.706 5.621 5.537 5.454 5.372 5.291 5.211 5.132 5.054 4.977 4.901 4.825 4.751 4.678 4.605 4.534 4.463 4.394 4.325 4.257 4.191 4.125 4.06 3.996 3.932 3.87 3.809 3.748 3.689 3.63 3.572 3.515 3.459 3.403 3.348 3.295 3.242 3.189 3.138 3.087 3.038 2.988 2.94 2.892

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.435" PeakHeight="110.0" Num="3" Error="0.0">
-27.968 9.691 -1.758
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.435" EndFrequency="11.0" PeakHeight="456.883" Num="5" zHalfNm="331.661" Error="2.178">
-304.941 -11.933 8.171 -4.601 1.67
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="35.249" Depth="0.15"/>
<TopsideChapman PeakHeight="456.883" PeakDensity="1501240.8" PeakScaleHeight="93.114" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
