<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-13 -044 21:20:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2 cusps do not match</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) 21:20:00</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">
FF202604402132120009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.525" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.635" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="525.000" 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="1.012" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="398.865" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="321.881" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.139" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="111.620" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="33.331" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="55.057" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="121.240" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.530" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="165">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 280.000 282.500 285.000 287.500 290.000 285.000 285.000 285.000 280.000 282.500 285.000 285.000 285.000 290.000 291.000 292.000 293.000 294.000 295.000 295.000 295.000 297.500 300.000 300.000 300.000 300.000 300.000 300.000 300.000 305.000 305.833 306.667 307.500 308.333 309.167 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 317.500 320.000 320.000 320.000 320.000 322.500 325.000 327.500 330.000 331.000 332.000 333.000 334.000 335.000 335.000 335.000 335.000 337.500 340.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 356.250 357.500 358.750 360.000 360.000 360.000 363.333 366.667 370.000 370.000 370.000 372.500 375.000 377.500 380.000 382.500 385.000 387.500 390.000 390.000 395.000 395.000 395.000 397.500 400.000 400.000 402.000 404.000 406.000 408.000 410.000 415.000 415.000 415.000 420.000 420.000 420.000 425.000 425.000 430.000 430.000 432.500 435.000 435.000 437.500 440.000 440.000 445.000 445.000 450.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 470.000 475.000 475.000 475.000 480.000 485.000 485.000 485.000 487.500 490.000 490.000 495.000 497.500 500.000 500.000 503.750 507.500 511.250 515.000 515.000 520.000 520.000 520.000 525.000 525.000 529.546 534.652 540.428 547.015 554.595 563.414 573.801
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 57 0 0 0 0 54 57 63 66 0 66 63 63 0 0 0 0 0 60 0 63 0 51 54 0 0 63 63 63 54 0 0 0 0 0 63 66 69 60 0 0 66 69 0 63 0 0 66 0 66 0 60 0 0 0 0 66 0 0 0 0 66 60 0 69 57 63 0 69 60 66 69 0 0 0 69 66 0 60 0 69 69 0 0 0 48 69 0 48 0 66 69 60 66 69 0 69 69 0 0 69 0 69 60 69 69 66 69 69 69 72 63 66 51 63 63 0 63 66 60 63 54 60 63 60 66 57 63 54 60 51 63 66 60 63 66 60 51 60 60 57 63 60 60 0 57 60 0 0 0 45 54 45 51 54 57 60 63 48 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 -1.171875 -0.390625 -0.390625 -1.953125 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -2.734375 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 0.390625 -1.171875 2.734375 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 2.734375 -1.171875 1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 2.734375 -1.953125 -1.953125 -1.953125 2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -0.390625 -0.390625 -2.734375 -2.734375 1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.257 95.0 100.0 105.0 110.0 115.0 120.0 125.0 126.692 130.0 135.0 140.0 143.384 145.0 150.0 155.0 160.0 160.076 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 398.865 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.674 0.877 0.98 1.012 0.995 0.942 0.848 0.805 0.805 0.805 0.805 0.805 0.825 0.887 0.949 1.011 1.012 1.113 1.21 1.307 1.408 1.514 1.628 1.751 1.886 2.035 2.199 2.38 2.579 2.794 3.025 3.266 3.516 3.77 4.025 4.279 4.532 4.781 5.028 5.272 5.513 5.751 5.987 6.221 6.453 6.685 6.915 7.144 7.374 7.603 7.832 8.062 8.292 8.523 8.754 8.985 9.216 9.445 9.672 9.891 10.098 10.283 10.433 10.527 10.55 10.55 10.538 10.51 10.467 10.411 10.341 10.26 10.168 10.066 9.955 9.836 9.71 9.577 9.438 9.294 9.146 8.994 8.839 8.681 8.521 8.36 8.198 8.034 7.871 7.707 7.544 7.381 7.22 7.059 6.9 6.742 6.586 6.432 6.28 6.13 5.982 5.836 5.693 5.552 5.414 5.278 5.145 5.014 4.886 4.761 4.638 4.517 4.4 4.285 4.172 4.063 3.955 3.85 3.748 3.648 3.55 3.455 3.362 3.272 3.183 3.097 3.013 2.932 2.852 2.774 2.698 2.625 2.553 2.483 2.415 2.349 2.284 2.221 2.16 2.101 2.043 1.986 1.931 1.878 1.826 1.775 1.726 1.678 1.632 1.587 1.543 1.5 1.458 1.418 1.378 1.34 1.303 1.266 1.231 1.197 1.163 1.131 1.099 1.069 1.039 1.01 0.982 0.955 0.928 0.902 0.877 0.852 0.829 0.805 0.783 0.761 0.74 0.719 0.699 0.68 0.661 0.642 0.624 0.607 0.59 0.573

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.012" PeakHeight="110.0" Num="3" Error="0.0">
-26.558 8.053 -1.238
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.012" EndFrequency="10.55" PeakHeight="398.865" Num="5" zHalfNm="321.881" Error="5.378">
-212.291 -41.283 24.964 -15.73 5.551
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="50.076" Depth="0.207"/>
<TopsideChapman PeakHeight="398.865" PeakDensity="1380924.4" PeakScaleHeight="55.057" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
