<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-01 -032 10:00:00.000"
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" >
2026.02.01 (032) 10:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" 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">
FF202603202011000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.220" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.118" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="7.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="340.000" 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="2.073" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="273.795" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.477" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.080" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="81.537" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="15.068" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="45.911" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="86.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.070" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="90">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 246.250 247.500 248.750 250.000 251.250 252.500 253.750 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 256.250 257.500 258.750 260.000 260.000 261.000 262.000 263.000 264.000 265.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 273.333 276.667 280.000 275.000 280.000 280.000 280.000 285.000 286.250 287.500 288.750 290.000 291.250 292.500 293.750 295.000 295.000 297.500 300.000 300.000 300.000 305.000 305.000 305.000 310.000 310.000 315.000 315.000 320.000 320.000 325.000 325.000 330.000 335.000 340.000 340.000 345.000 349.513 355.273 362.877 373.382 388.836 413.819 461.067
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 51 0 0 0 54 54 51 51 0 45 0 0 48 0 0 0 54 57 0 54 0 48 48 0 0 0 51 45 0 0 0 0 54 48 0 0 0 0 0 0 48 0 0 54 45 0 0 57 63 66 72 72 66 0 0 51 0 0 0 0 54 57 0 54 66 66 60 63 66 63 69 66 63 66 75 69 63 60 63 60 57 51 57 63 63 63 66 54 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 0.390625 0.390625 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -2.734375 0.390625 0.390625 0.390625 0.390625 1.171875 0.390625 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 2.734375 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 0.390625 0.390625 0.390625 -2.734375 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="165">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.74 90.0 95.0 100.0 105.0 110.0 115.0 117.809 120.0 125.0 125.618 130.0 133.427 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 273.795 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.222 1.39 1.795 2.006 2.073 2.02 1.942 1.942 1.942 1.942 2.016 2.073 2.142 2.334 2.509 2.677 2.842 3.009 3.179 3.355 3.537 3.729 3.931 4.146 4.377 4.625 4.891 5.179 5.485 5.807 6.134 6.453 6.75 7.014 7.238 7.423 7.568 7.677 7.75 7.791 7.8 7.799 7.786 7.757 7.712 7.653 7.582 7.499 7.406 7.303 7.193 7.075 6.951 6.822 6.689 6.552 6.412 6.271 6.127 5.983 5.838 5.693 5.548 5.404 5.261 5.12 4.98 4.842 4.706 4.572 4.44 4.311 4.184 4.06 3.938 3.82 3.704 3.591 3.48 3.372 3.268 3.165 3.066 2.969 2.875 2.784 2.695 2.609 2.525 2.444 2.365 2.289 2.214 2.142 2.073 2.005 1.94 1.876 1.815 1.755 1.697 1.642 1.587 1.535 1.484 1.435 1.388 1.342 1.298 1.255 1.213 1.173 1.134 1.096 1.06 1.025 0.99 0.958 0.926 0.895 0.865 0.836 0.808 0.781 0.755 0.73 0.706 0.682 0.659 0.637 0.616 0.596 0.576 0.557 0.538 0.52 0.503 0.486 0.47 0.454 0.439 0.424 0.41 0.396 0.383 0.37 0.358 0.346 0.334 0.323 0.312 0.302 0.292 0.282 0.273 0.263 0.255 0.246 0.238 0.23 0.222 0.215 0.208 0.201

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.073" PeakHeight="110.0" Num="3" Error="0.0">
-29.177 11.264 -2.347
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.073" EndFrequency="7.8" PeakHeight="273.795" Num="5" zHalfNm="215.477" Error="2.2">
-127.794 -11.594 -5.619 5.027 -0.388
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="23.427" Depth="0.131"/>
<TopsideChapman PeakHeight="273.795" PeakDensity="754838.7" PeakScaleHeight="45.911" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
