<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-01-27 -027 09:00:00.000"
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="18.0">
<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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.01.27 (027) 09:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.12" 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">
FF202602701270900009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.177" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.886" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="4.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="331.783" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.024" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="290.391" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="226.594" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.494" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="90.513" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.489" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="49.314" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="86.880" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="43">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 265.000 265.000 265.000 265.000 265.000 266.429 267.857 269.286 270.714 272.143 273.571 275.000 275.000 280.000 281.000 282.000 283.000 284.000 285.000 285.000 290.000 295.000 297.500 300.000 301.762 303.707 305.866 308.276 310.984 314.049 317.545 321.572 326.258 331.783 338.391 346.437 356.448 369.241 386.167 409.612 444.241 500.564
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 0 0 0 66 0 0 0 0 69 0 63 69 57 0 48 57 0 66 60 63 57 0 54 69 66 69 69 66 66 66 63 0 57 63 0 0 60 63 57 57 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 -2.734375 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 1.171875 -1.171875 1.171875 1.171875 -1.171875 -1.953125 1.171875 1.171875 1.171875 1.953125 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="162">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.247 95.0 100.0 105.0 110.0 115.0 120.0 125.0 126.455 130.0 135.0 140.0 142.911 145.0 150.0 155.0 159.366 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 290.391 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.682 0.887 0.991 1.024 1.007 0.953 0.858 0.821 0.821 0.821 0.821 0.821 0.847 0.908 0.97 1.024 1.039 1.168 1.315 1.472 1.636 1.806 1.982 2.167 2.36 2.562 2.776 2.999 3.229 3.462 3.691 3.909 4.11 4.291 4.449 4.584 4.699 4.793 4.868 4.926 4.966 4.991 5.0 5.0 4.996 4.982 4.96 4.929 4.891 4.846 4.795 4.739 4.677 4.611 4.541 4.467 4.391 4.312 4.231 4.148 4.064 3.979 3.893 3.807 3.72 3.634 3.547 3.461 3.376 3.292 3.208 3.125 3.044 2.963 2.884 2.806 2.73 2.655 2.581 2.509 2.439 2.369 2.302 2.236 2.172 2.109 2.047 1.987 1.929 1.872 1.817 1.763 1.711 1.66 1.61 1.562 1.515 1.469 1.425 1.381 1.34 1.299 1.259 1.221 1.184 1.147 1.112 1.078 1.045 1.013 0.982 0.952 0.922 0.894 0.867 0.84 0.814 0.789 0.764 0.741 0.718 0.696 0.674 0.653 0.633 0.613 0.594 0.576 0.558 0.541 0.524 0.508 0.492 0.476 0.462 0.447 0.433 0.42 0.407 0.394 0.382 0.37 0.359 0.347 0.337 0.326 0.316 0.306 0.297 0.287 0.278 0.27 0.261 0.253 0.245 0.238 0.23 0.223 0.216 0.209 0.203

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.024" PeakHeight="110.0" Num="3" Error="0.0">
-26.609 8.11 -1.254
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.024" EndFrequency="5.0" PeakHeight="290.391" Num="5" zHalfNm="226.594" Error="2.017">
-137.303 10.812 -7.064 3.626 -1.096
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="49.366" Depth="0.203"/>
<TopsideChapman PeakHeight="290.391" PeakDensity="310173.7" PeakScaleHeight="49.314" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
