<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-06 -037 17:20:00.000"
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="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" >
2026.02.06 (037) 17:20:00</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">
FF202603702061720009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.331" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.731" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="360.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="360.000" 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="7.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="435.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.202" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.272" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="401.780" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="252.888" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.242" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="194.545" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.048" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="107.086" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="231.730" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.540" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="81">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
360.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 370.000 372.500 375.000 377.000 379.000 381.000 383.000 385.000 385.000 387.500 390.000 395.000 395.000 400.000 400.000 405.000 410.000 415.000 415.000 420.000 420.000 425.000 430.000 435.000 435.000 440.000 445.000 450.000 455.000 460.000 465.000 470.000 475.000 485.000 490.000 495.000 500.000 505.000 515.000 525.000 530.000 535.000 535.000 540.000 550.000 555.000 560.000 565.000 570.000 575.000 580.000 585.000 590.000 595.000 605.000 610.000 620.000 625.000 635.000 645.000 665.000 680.000 701.647 729.338 766.012
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 54 0 51 51 45 0 48 48 0 45 45 57 57 51 51 0 0 0 0 0 0 0 54 0 54 48 54 51 51 54 48 45 51 48 48 54 57 57 57 54 54 54 57 57 57 57 60 57 57 57 54 57 54 48 51 54 57 57 57 57 57 63 63 63 63 63 60 60 57 60 57 57 54 51 54 54 48 42 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 -1.171875 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 -0.390625 0.390625 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" >
89.513 90.0 95.0 100.0 105.0 110.0 112.334 114.668 115.0 117.002 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 401.78 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.153 2.771 3.098 3.202 3.08 3.08 3.097 3.202 3.298 3.44 3.572 3.699 3.823 3.947 4.071 4.197 4.324 4.453 4.584 4.717 4.853 4.991 5.13 5.271 5.413 5.556 5.699 5.842 5.985 6.127 6.268 6.407 6.545 6.682 6.817 6.95 7.082 7.212 7.34 7.466 7.59 7.713 7.834 7.953 8.071 8.187 8.301 8.414 8.525 8.634 8.741 8.846 8.948 9.048 9.144 9.237 9.326 9.409 9.487 9.557 9.619 9.67 9.71 9.737 9.749 9.75 9.749 9.744 9.736 9.723 9.707 9.688 9.664 9.638 9.608 9.575 9.54 9.501 9.46 9.416 9.37 9.321 9.27 9.217 9.162 9.105 9.046 8.985 8.923 8.859 8.794 8.728 8.66 8.591 8.521 8.45 8.379 8.306 8.233 8.158 8.084 8.008 7.933 7.856 7.78 7.703 7.626 7.548 7.471 7.393 7.315 7.238 7.16 7.082 7.005 6.927 6.85 6.773 6.696 6.62 6.543 6.467 6.392 6.317 6.242 6.167 6.093 6.02 5.947 5.874 5.802 5.731 5.66 5.589 5.519 5.45 5.381 5.313 5.245 5.178 5.112 5.046 4.981 4.916 4.852 4.789 4.726 4.664 4.602 4.542 4.481 4.422 4.363 4.305 4.247 4.19 4.134 4.078 4.023 3.968 3.915 3.861 3.809 3.757 3.706 3.655 3.605 3.555 3.506 3.458 3.41 3.363 3.317 3.271 3.225 3.181 3.136 3.093 3.05 3.007 2.965 2.924 2.883 2.842 2.802 2.763

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.202" PeakHeight="110.0" Num="3" Error="0.0">
-30.359 12.943 -3.071
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.202" EndFrequency="9.75" PeakHeight="401.78" Num="5" zHalfNm="252.888" Error="5.804">
-260.665 -38.739 19.247 -7.794 3.173
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.002" Depth="0.122"/>
<TopsideChapman PeakHeight="401.78" PeakDensity="1179435.5" PeakScaleHeight="107.086" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
