<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-13 -044 14:40:00.000"
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" >
2026.02.13 (044) 14:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.14" 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">
FF202604402131440009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.414" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.655" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="8.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="515.000" 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="3.379" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.355" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="378.298" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="246.571" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.415" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="169.957" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.091" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="95.682" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="211.840" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.440" 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" >
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 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 330.000 330.000 330.000 330.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 357.500 360.000 360.000 362.500 365.000 365.000 365.000 367.500 370.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 390.000 390.000 395.000 395.000 397.500 400.000 405.000 405.000 410.000 410.000 410.000 414.000 418.000 422.000 426.000 430.000 435.000 435.000 435.000 440.000 445.000 450.000 455.000 455.000 465.000 470.000 472.500 475.000 480.000 485.000 485.000 490.000 495.000 500.000 505.000 510.000 515.000 515.000 525.000 530.000 533.947 538.280 543.059 548.358 554.264 560.890 568.375 576.898 586.690 598.059 611.419 627.342 646.644 670.530 700.850
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 48 48 0 54 54 0 51 57 57 48 57 57 54 57 57 54 54 54 0 51 54 0 57 57 54 0 57 54 57 51 54 51 51 57 57 60 57 60 0 57 51 57 51 54 54 0 54 0 0 45 48 54 54 54 57 57 57 57 57 48 0 54 57 60 57 60 57 57 60 60 60 57 54 54 54 57 57 57 54 54 54 51 54 51 51 51 48 0 45
</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 -2.734375 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 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 -1.953125 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.485 90.0 95.0 100.0 105.0 110.0 111.594 113.189 114.783 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 378.298 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.273 2.924 3.269 3.379 3.256 3.256 3.379 3.386 3.543 3.683 3.815 3.942 4.067 4.191 4.315 4.44 4.565 4.692 4.819 4.949 5.08 5.212 5.346 5.482 5.619 5.757 5.897 6.037 6.177 6.319 6.46 6.602 6.744 6.885 7.026 7.167 7.307 7.446 7.584 7.722 7.858 7.993 8.127 8.259 8.39 8.519 8.646 8.771 8.893 9.012 9.127 9.238 9.343 9.441 9.531 9.612 9.681 9.735 9.774 9.796 9.8 9.8 9.795 9.786 9.772 9.753 9.73 9.702 9.671 9.635 9.596 9.553 9.506 9.457 9.404 9.348 9.29 9.229 9.165 9.099 9.031 8.961 8.889 8.816 8.74 8.663 8.585 8.506 8.425 8.343 8.26 8.177 8.092 8.008 7.922 7.836 7.749 7.663 7.576 7.488 7.401 7.313 7.226 7.139 7.051 6.964 6.877 6.791 6.704 6.618 6.533 6.448 6.363 6.279 6.195 6.112 6.029 5.947 5.866 5.785 5.705 5.626 5.547 5.469 5.392 5.315 5.239 5.164 5.09 5.016 4.944 4.872 4.801 4.73 4.661 4.592 4.524 4.457 4.39 4.325 4.26 4.196 4.133 4.071 4.009 3.948 3.888 3.829 3.771 3.713 3.656 3.6 3.545 3.49 3.436 3.383 3.331 3.279 3.228 3.178 3.129 3.08 3.032 2.985 2.938 2.892 2.847 2.802 2.758 2.715 2.672 2.63 2.588 2.547 2.507 2.468 2.429 2.39 2.352 2.315 2.278 2.242 2.206 2.171 2.137 2.103

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.379" PeakHeight="110.0" Num="3" Error="0.0">
-30.492 13.139 -3.162
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.379" EndFrequency="9.8" PeakHeight="378.298" Num="5" zHalfNm="246.571" Error="4.591">
-232.122 -44.68 15.053 -3.721 1.955
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.783" Depth="0.123"/>
<TopsideChapman PeakHeight="378.298" PeakDensity="1191563.2" PeakScaleHeight="95.682" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
