<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-07 -038 12:40:00.000"
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" >
2026.02.07 (038) 12:40:00</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">
FF202603802071240009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.558" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.197" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="9.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="3.135" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.240" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="355.142" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="238.020" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.068" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="154.915" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="44.504" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="86.106" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="182.680" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.590" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="110">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 9.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 225.000 230.000 235.000 240.000 245.000 248.333 251.667 255.000 258.333 261.667 265.000 268.333 271.667 275.000 278.333 281.667 285.000 288.333 291.667 295.000 295.000 297.500 300.000 302.500 305.000 307.500 310.000 310.000 312.500 315.000 315.000 316.250 317.500 318.750 320.000 320.000 320.000 325.000 327.500 330.000 331.818 333.636 335.455 337.273 339.091 340.909 342.727 344.545 346.364 348.182 350.000 355.000 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 390.000 390.000 395.000 400.000 400.000 405.000 405.000 410.000 415.000 415.000 420.000 420.000 430.000 430.000 435.000 440.000 440.000 450.000 450.000 455.000 455.000 460.000 465.000 470.000 475.000 480.000 480.000 485.000 485.000 490.000 495.000 495.000 500.000 510.000 515.000 520.000 530.000 540.000 550.000 565.000 588.180 622.280 677.392
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 0 0 45 45 0 0 0 0 48 0 48 0 0 0 0 0 48 0 0 45 0 0 0 51 0 51 51 0 48 54 0 0 0 51 51 45 54 0 51 0 0 0 0 0 0 0 0 51 0 57 48 54 60 54 57 51 60 54 63 54 63 54 60 57 63 60 63 60 54 60 57 60 63 60 63 66 66 63 63 63 63 63 60 60 63 63 63 60 63 63 57 60 60 60 60 60 63 60 60 57 54 60 57 60 60 54 51 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 1.953125 -0.390625 2.734375 0.390625 -2.734375 -1.953125 1.953125 1.171875 -1.171875 0.390625 1.953125 -0.390625 -0.390625 0.390625 1.953125 -2.734375 -0.390625 1.171875 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 -2.734375 1.171875 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 -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" >
89.523 90.0 95.0 100.0 105.0 110.0 112.625 115.0 115.25 117.875 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 355.142 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.108 2.713 3.033 3.135 3.013 3.013 3.013 3.135 3.194 3.336 3.479 3.624 3.771 3.921 4.072 4.226 4.382 4.54 4.7 4.861 5.024 5.188 5.354 5.52 5.687 5.854 6.022 6.19 6.359 6.527 6.696 6.864 7.031 7.198 7.365 7.53 7.694 7.857 8.019 8.178 8.335 8.489 8.64 8.787 8.929 9.066 9.196 9.318 9.432 9.535 9.626 9.703 9.766 9.812 9.84 9.85 9.85 9.847 9.838 9.822 9.801 9.775 9.743 9.706 9.664 9.618 9.567 9.513 9.454 9.392 9.326 9.257 9.185 9.111 9.033 8.954 8.872 8.788 8.702 8.614 8.525 8.434 8.343 8.25 8.156 8.061 7.965 7.869 7.773 7.676 7.578 7.481 7.383 7.286 7.188 7.09 6.993 6.896 6.799 6.703 6.607 6.512 6.417 6.323 6.229 6.137 6.044 5.953 5.862 5.773 5.684 5.595 5.508 5.422 5.336 5.252 5.168 5.085 5.004 4.923 4.843 4.764 4.687 4.61 4.534 4.459 4.385 4.313 4.241 4.17 4.1 4.031 3.964 3.897 3.831 3.766 3.702 3.639 3.577 3.516 3.455 3.396 3.338 3.28 3.224 3.168 3.113 3.06 3.007 2.954 2.903 2.852 2.803 2.754 2.706 2.658 2.612 2.566 2.521 2.477 2.433 2.391 2.349 2.307 2.267 2.227 2.187 2.149 2.111 2.073 2.037 2.001 1.965 1.93 1.896 1.863 1.829 1.797 1.765 1.734 1.703 1.673 1.643 1.614 1.585 1.557

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.135" PeakHeight="110.0" Num="3" Error="0.0">
-30.306 12.865 -3.036
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.135" EndFrequency="9.85" PeakHeight="355.142" Num="5" zHalfNm="238.02" Error="2.397">
-215.573 -29.511 9.746 -2.352 0.423
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.875" Depth="0.122"/>
<TopsideChapman PeakHeight="355.142" PeakDensity="1203753.1" PeakScaleHeight="86.106" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
