<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-06 -037 17:00:00.000"
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" >
2026.02.06 (037) 17:00:00</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">
FF202603702061700009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.354" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.363" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="345.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="345.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.254" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.297" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="384.260" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.268" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.110" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="158.759" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="44.219" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.448" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="218.160" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.190" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="79">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
345.000 350.000 355.000 360.000 365.000 365.000 365.000 368.750 372.500 376.250 380.000 380.000 390.000 392.500 395.000 395.000 398.333 401.667 405.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 420.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 442.500 445.000 445.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 480.000 480.000 485.000 485.000 495.000 500.000 505.000 505.000 510.000 515.000 520.000 525.000 530.000 535.000 545.000 550.000 555.000 555.000 560.000 565.000 570.000 574.646 579.836 585.673 592.284 599.836 608.544 618.696 630.684 645.054 662.595
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 48 48 45 0 51 0 0 0 57 45 0 0 48 45 0 0 57 57 57 63 60 63 57 63 60 60 60 57 60 51 57 48 51 0 51 60 57 63 63 66 63 66 66 66 69 69 66 69 72 72 69 66 63 60 57 54 60 60 60 57 48 45 48 51 45 54 51 51 54 54 51 48 48 48 51 54 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 -0.390625 -0.390625 1.953125 -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 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
</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" >
89.504 90.0 95.0 100.0 105.0 110.0 112.114 114.227 115.0 116.341 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 384.26 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.189 2.816 3.148 3.254 3.132 3.132 3.177 3.254 3.37 3.514 3.648 3.776 3.9 4.022 4.142 4.261 4.379 4.498 4.616 4.734 4.852 4.971 5.09 5.209 5.329 5.449 5.569 5.689 5.81 5.931 6.052 6.174 6.296 6.418 6.54 6.662 6.784 6.907 7.03 7.153 7.276 7.4 7.523 7.647 7.771 7.895 8.019 8.143 8.267 8.39 8.514 8.636 8.757 8.877 8.993 9.105 9.21 9.306 9.387 9.45 9.489 9.5 9.5 9.496 9.487 9.473 9.454 9.429 9.401 9.367 9.33 9.288 9.243 9.194 9.141 9.086 9.027 8.965 8.901 8.834 8.764 8.693 8.619 8.543 8.466 8.387 8.307 8.225 8.142 8.057 7.972 7.886 7.799 7.712 7.624 7.535 7.446 7.357 7.268 7.178 7.088 6.999 6.909 6.82 6.73 6.641 6.553 6.464 6.376 6.289 6.202 6.115 6.029 5.943 5.859 5.774 5.691 5.608 5.526 5.445 5.364 5.284 5.205 5.127 5.049 4.973 4.897 4.822 4.748 4.675 4.602 4.531 4.46 4.39 4.321 4.253 4.186 4.12 4.054 3.99 3.926 3.863 3.801 3.74 3.68 3.621 3.562 3.504 3.447 3.391 3.336 3.281 3.228 3.175 3.123 3.071 3.021 2.971 2.922 2.874 2.826 2.779 2.733 2.688 2.643 2.599 2.556 2.513 2.471 2.43 2.39 2.35 2.31 2.272 2.233 2.196 2.159 2.123 2.087 2.052 2.017 1.983 1.95 1.917 1.885 1.853

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.254" PeakHeight="110.0" Num="3" Error="0.0">
-30.4 13.002 -3.098
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.254" EndFrequency="9.5" PeakHeight="384.26" Num="5" zHalfNm="257.268" Error="4.091">
-224.461 -64.511 23.935 -4.315 1.433
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.341" Depth="0.122"/>
<TopsideChapman PeakHeight="384.26" PeakDensity="1119727.0" PeakScaleHeight="90.448" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
