<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 08:50:00.000"
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="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" >
2026.03.02 (061) 08:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.16" 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">
FF202606103020850009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="5.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.073" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.519" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.400" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="351.486" 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="0.782" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="311.897" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="242.742" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.826" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="98.253" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.962" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="52.941" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="86.910" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="61">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.05 2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 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 5.05
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 245.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 251.667 253.333 255.000 256.667 258.333 260.000 261.250 262.500 263.750 265.000 260.000 262.500 265.000 265.000 265.000 275.000 275.000 275.000 280.000 280.000 285.000 285.000 285.000 287.500 290.000 295.000 295.000 300.000 300.000 300.000 300.000 305.000 310.000 310.000 315.000 320.000 320.000 320.000 330.000 330.000 335.000 340.000 345.254 351.486 359.000 368.233 379.854 394.926 415.254 444.169 488.567 565.434
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 63 63 0 0 0 0 63 60 0 0 69 0 0 75 0 0 0 72 63 0 72 0 0 66 69 72 69 72 60 66 75 0 69 57 66 54 60 63 63 66 60 72 72 69 72 69 66 66 66 66 66 69 69 66 66 63 63 60 54 51
</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 1.171875 1.171875 1.171875 1.171875 1.171875 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="175">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.582 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 133.366 135.0 140.0 145.0 150.0 155.0 156.733 160.0 165.0 170.0 175.0 180.0 180.099 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 311.897 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.519 0.678 0.757 0.782 0.77 0.732 0.665 0.559 0.449 0.449 0.449 0.449 0.449 0.449 0.449 0.496 0.567 0.638 0.709 0.781 0.782 0.883 1.008 1.157 1.332 1.532 1.758 2.009 2.282 2.571 2.866 3.156 3.43 3.681 3.907 4.108 4.284 4.437 4.57 4.684 4.78 4.86 4.925 4.976 5.014 5.038 5.049 5.05 5.048 5.039 5.021 4.997 4.965 4.927 4.883 4.834 4.78 4.721 4.659 4.593 4.525 4.453 4.379 4.304 4.227 4.148 4.068 3.988 3.907 3.826 3.744 3.663 3.582 3.501 3.421 3.341 3.262 3.184 3.107 3.031 2.956 2.882 2.809 2.737 2.667 2.598 2.53 2.464 2.399 2.335 2.273 2.212 2.152 2.094 2.037 1.981 1.927 1.874 1.822 1.772 1.723 1.675 1.628 1.583 1.538 1.495 1.453 1.412 1.372 1.333 1.295 1.259 1.223 1.188 1.154 1.121 1.089 1.058 1.028 0.998 0.97 0.942 0.915 0.888 0.863 0.838 0.814 0.791 0.768 0.746 0.724 0.703 0.683 0.663 0.644 0.625 0.607 0.59 0.573 0.556 0.54 0.524 0.509 0.494 0.48 0.466 0.453 0.439 0.427 0.414 0.402 0.391 0.379 0.368 0.358 0.347 0.337 0.327 0.318 0.309 0.3 0.291 0.282 0.274 0.266 0.259 0.251 0.244 0.237 0.23 0.223 0.217 0.21 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.782" PeakHeight="110.0" Num="3" Error="0.0">
-25.286 6.762 -0.894
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.782" EndFrequency="5.05" PeakHeight="311.897" Num="5" zHalfNm="242.742" Error="2.556">
-149.106 27.294 -12.202 2.925 -0.709
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="70.099" Depth="0.333"/>
<TopsideChapman PeakHeight="311.897" PeakDensity="316408.2" PeakScaleHeight="52.941" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
