<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-26 -299 20:20:00.000"
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: 80% PACIFIC flags: Unidentified traces above foF2</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" >
2026.10.26 (299) 20:20:00</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">
FF202629910262020009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.117" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.756" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="7.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="376.497" 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="1.633" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="284.071" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="228.348" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.417" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="73.994" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="11.555" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="38.755" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="96.160" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.140" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="48">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 302.500 305.000 307.500 310.000 310.000 310.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 330.000 330.000 331.667 333.333 335.000 340.000 341.667 343.333 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 360.000 360.000 365.000 365.000 365.000 367.500 368.756 370.217 371.938 373.995 376.497 379.606 383.573 388.809 396.043
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 0 0 0 72 75 69 66 72 63 51 75 78 66 0 78 72 72 0 0 75 63 0 0 66 69 78 72 72 81 87 87 78 84 69 78 75 66 75 57 63 63 78 75 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -1.171875 -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 1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="146">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.881 90.0 95.0 100.0 105.0 110.0 115.0 120.0 120.373 125.0 130.0 130.746 135.0 140.0 141.119 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 284.071 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21 1.092 1.415 1.58 1.633 1.601 1.501 1.491 1.491 1.491 1.491 1.549 1.618 1.633 1.762 1.946 2.147 2.362 2.584 2.808 3.03 3.248 3.461 3.668 3.872 4.071 4.268 4.461 4.653 4.844 5.034 5.225 5.416 5.609 5.804 6.002 6.204 6.411 6.622 6.838 7.052 7.235 7.3 7.3 7.284 7.247 7.19 7.116 7.026 6.923 6.808 6.682 6.548 6.406 6.259 6.107 5.951 5.793 5.633 5.473 5.312 5.152 4.992 4.835 4.679 4.526 4.375 4.228 4.083 3.942 3.804 3.669 3.538 3.411 3.287 3.167 3.051 2.938 2.829 2.724 2.621 2.523 2.427 2.335 2.246 2.161 2.078 1.998 1.921 1.847 1.776 1.707 1.641 1.577 1.516 1.457 1.4 1.346 1.293 1.243 1.194 1.147 1.102 1.059 1.018 0.978 0.939 0.902 0.867 0.833 0.8 0.769 0.738 0.709 0.681 0.654 0.629 0.604 0.58 0.557 0.535 0.514 0.494 0.474 0.456 0.438 0.42 0.404 0.388 0.373 0.358 0.344 0.33 0.317 0.305 0.293 0.281 0.27 0.259 0.249 0.239 0.23 0.221 0.212 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.633" PeakHeight="110.0" Num="3" Error="0.0">
-28.418 10.26 -1.961
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.633" EndFrequency="7.3" PeakHeight="284.071" Num="5" zHalfNm="228.348" Error="1.033">
-119.496 -38.859 21.842 -7.406 0.967
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="31.119" Depth="0.142"/>
<TopsideChapman PeakHeight="284.071" PeakDensity="661166.25" PeakScaleHeight="38.755" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
