<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-25 -298 19:20:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.25 (298) 19:20:00</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">
FF202629810251920009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="12.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.156" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="38.498" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="88" Val="12.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="385.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.411" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="272.562" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="214.063" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.441" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="78.938" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="32.805" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="40.126" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="94.130" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="55">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 12.0 12.05 12.1 12.15 12.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 330.000 330.000 332.500 335.000 337.500 340.000 335.000 336.667 338.333 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 345.000 342.500 340.000 350.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 60 0 0 0 0 0 0 0 0 66 0 72 72 69 60 0 0 0 0 0 0 54 69 0 0 66 0 0 0 57 0 0 0 0 0 60 63 0 57 0 0 63 0 48 0 0 0 54 0 0 0 0 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="160">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.659 90.0 95.0 100.0 105.0 110.0 115.0 116.034 120.0 122.067 125.0 128.101 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 272.562 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.618 2.088 2.333 2.411 2.325 2.285 2.285 2.285 2.346 2.411 2.526 2.805 3.084 3.384 3.714 4.081 4.483 4.909 5.343 5.772 6.186 6.584 6.964 7.33 7.684 8.026 8.36 8.688 9.01 9.33 9.648 9.965 10.285 10.607 10.933 11.263 11.596 11.916 12.159 12.2 12.196 12.161 12.093 11.996 11.872 11.724 11.555 11.368 11.165 10.948 10.72 10.483 10.238 9.987 9.733 9.475 9.216 8.957 8.698 8.44 8.185 7.932 7.683 7.438 7.197 6.961 6.729 6.503 6.282 6.067 5.857 5.653 5.455 5.262 5.075 4.894 4.718 4.548 4.383 4.224 4.069 3.92 3.776 3.637 3.502 3.373 3.247 3.126 3.01 2.897 2.789 2.684 2.584 2.487 2.393 2.303 2.216 2.132 2.052 1.974 1.899 1.828 1.758 1.692 1.627 1.566 1.506 1.449 1.394 1.341 1.29 1.241 1.194 1.148 1.104 1.062 1.022 0.983 0.946 0.91 0.875 0.842 0.809 0.779 0.749 0.72 0.693 0.666 0.641 0.617 0.593 0.57 0.549 0.528 0.508 0.488 0.47 0.452 0.434 0.418 0.402 0.386 0.372 0.358 0.344 0.331 0.318 0.306 0.294 0.283 0.272 0.262 0.252 0.242 0.233 0.224 0.216 0.207

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.411" PeakHeight="110.0" Num="3" Error="0.0">
-29.613 11.868 -2.596
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.411" EndFrequency="12.2" PeakHeight="272.562" Num="5" zHalfNm="214.063" Error="3.889">
-124.943 -33.565 21.992 -11.151 3.206
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="18.101" Depth="0.126"/>
<TopsideChapman PeakHeight="272.562" PeakDensity="1846650.1" PeakScaleHeight="40.126" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
