<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 17:20:00.000"
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: 85% PACIFIC flags: Multiple candidates for F2o cusp, 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) 17:20:00</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">
FF202630511011720009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.579" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.821" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="385.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="385.000" 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="10.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="455.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.107" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.226" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="357.614" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="241.182" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.681" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="157.192" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="64.008" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.440" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="177.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.630" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="63">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
385.000 385.000 385.000 385.000 390.000 391.250 392.500 393.750 395.000 395.000 396.667 398.333 400.000 400.000 405.000 405.000 410.000 410.000 410.000 410.000 410.000 410.000 420.000 420.000 422.500 425.000 422.500 420.000 422.500 425.000 435.000 435.000 440.000 440.000 440.000 445.000 450.000 450.000 455.000 455.000 460.000 465.000 470.000 475.000 480.000 485.000 490.000 495.000 500.000 505.000 510.000 515.000 520.000 525.000 535.000 540.000 550.000 565.000 578.333 591.667 609.520 630.876 656.879
</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 66 66 60 63 0 0 63 0 57 63 57 60 54 60 0 63 0 54 57 60 57 57 60 60 54 57 60 60 60 60 57 54 51 51 48 48 45 48 48 51 51 51 54 51 51 51 51 45 51 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 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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -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" >
89.528 90.0 95.0 100.0 105.0 110.0 112.747 115.0 115.495 118.242 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 357.614 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.089 2.689 3.006 3.107 2.985 2.985 2.985 3.107 3.168 3.345 3.528 3.717 3.914 4.119 4.33 4.549 4.773 5.002 5.234 5.469 5.705 5.941 6.176 6.41 6.641 6.871 7.098 7.322 7.543 7.761 7.977 8.19 8.401 8.608 8.814 9.016 9.216 9.414 9.609 9.801 9.99 10.176 10.358 10.536 10.71 10.879 11.041 11.196 11.342 11.478 11.601 11.71 11.801 11.872 11.921 11.947 11.95 11.949 11.941 11.926 11.903 11.873 11.836 11.792 11.743 11.687 11.626 11.56 11.489 11.413 11.333 11.249 11.16 11.068 10.973 10.875 10.774 10.67 10.564 10.456 10.346 10.234 10.12 10.005 9.889 9.772 9.654 9.535 9.415 9.295 9.174 9.054 8.933 8.812 8.691 8.571 8.451 8.331 8.211 8.092 7.974 7.856 7.739 7.623 7.508 7.393 7.28 7.167 7.055 6.945 6.835 6.727 6.619 6.513 6.408 6.304 6.202 6.1 6.0 5.901 5.803 5.707 5.611 5.517 5.425 5.333 5.243 5.154 5.066 4.98 4.895 4.811 4.728 4.646 4.566 4.487 4.409 4.332 4.257 4.183 4.109 4.037 3.967 3.897 3.828 3.761 3.694 3.629 3.565 3.502 3.439 3.378 3.318 3.259 3.201 3.144 3.088 3.032 2.978 2.925 2.872 2.821 2.77 2.72 2.671 2.623 2.576 2.53 2.484 2.439 2.395 2.352 2.309 2.268 2.227 2.186 2.147 2.108 2.069 2.032 1.995 1.959 1.923 1.888 1.854 1.82

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.107" PeakHeight="110.0" Num="3" Error="0.0">
-30.283 12.832 -3.021
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.107" EndFrequency="11.95" PeakHeight="357.614" Num="5" zHalfNm="241.182" Error="2.145">
-225.785 -23.471 15.107 -6.579 1.356
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.242" Depth="0.122"/>
<TopsideChapman PeakHeight="357.614" PeakDensity="1771743.1" PeakScaleHeight="84.44" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
