<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 12:50:00.000"
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) 12:50:00</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">
FF202630511011250009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.612" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.255" 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="10.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="445.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="445.000" 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="9.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="455.000" 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="3.254" 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="/" />
<Modeled Name="foF1p" Val="4.297" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="336.288" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="216.147" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.159" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="160.137" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.555" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="87.533" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="179.220" 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="23">
<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 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
445.000 450.000 450.000 455.000 455.000 455.000 465.000 470.000 470.000 475.000 479.381 484.283 489.805 496.073 503.249 511.544 521.244 532.739 546.576 563.554 584.878 612.462 649.538
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 66 63 72 72 72 69 75 72 69 60 45 48 51 48 51 0 51 45 0 0 48
</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
</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" >
89.504 90.0 95.0 100.0 105.0 110.0 112.114 114.228 115.0 116.342 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 336.288 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.189 2.816 3.148 3.254 3.132 3.132 3.177 3.254 3.382 3.554 3.726 3.9 4.078 4.261 4.449 4.643 4.842 5.044 5.25 5.457 5.665 5.873 6.079 6.283 6.483 6.68 6.874 7.063 7.249 7.431 7.608 7.782 7.952 8.118 8.279 8.437 8.591 8.741 8.886 9.026 9.161 9.291 9.414 9.529 9.637 9.735 9.822 9.898 9.959 10.006 10.036 10.049 10.05 10.048 10.04 10.027 10.007 9.982 9.952 9.916 9.876 9.831 9.782 9.729 9.672 9.611 9.546 9.478 9.408 9.334 9.258 9.179 9.098 9.015 8.93 8.843 8.754 8.664 8.573 8.48 8.387 8.292 8.197 8.101 8.004 7.907 7.81 7.712 7.614 7.516 7.418 7.32 7.222 7.125 7.027 6.93 6.834 6.737 6.642 6.547 6.452 6.358 6.265 6.172 6.081 5.99 5.899 5.81 5.721 5.634 5.547 5.461 5.376 5.292 5.208 5.126 5.045 4.965 4.885 4.807 4.729 4.653 4.578 4.503 4.43 4.357 4.286 4.215 4.146 4.077 4.01 3.943 3.877 3.813 3.749 3.686 3.624 3.563 3.503 3.444 3.386 3.328 3.272 3.216 3.161 3.108 3.055 3.002 2.951 2.9 2.851 2.802 2.754 2.706 2.66 2.614 2.569 2.524 2.481 2.438 2.396 2.354 2.313 2.273 2.234 2.195 2.157 2.119 2.082 2.046 2.01 1.975 1.941 1.907 1.874 1.841 1.809 1.777 1.746 1.716 1.686 1.656 1.627 1.599 1.57 1.543

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.254" PeakHeight="110.0" Num="3" Error="0.0">
-30.4 13.002 -3.098
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.254" EndFrequency="10.05" PeakHeight="336.288" Num="5" zHalfNm="216.147" Error="2.797">
-211.041 -15.167 9.731 -5.025 1.556
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.342" Depth="0.122"/>
<TopsideChapman PeakHeight="336.288" PeakDensity="1253132.8" PeakScaleHeight="87.533" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
