<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-15 -046 18:20:00.000"
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: 90% PACIFIC flags: One of F2 cusps was derived from the other</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" >
2026.02.15 (046) 18:20:00</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">
FF202604602151820009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.527" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.828" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.993" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.170" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="377.050" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="279.393" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.546" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="131.758" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="58.271" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.899" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="161.500" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.350" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="161">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 230.000 235.000 240.000 245.000 245.000 252.500 260.000 265.000 270.000 275.000 280.000 282.500 285.000 285.000 290.000 290.000 290.000 290.000 290.000 295.000 300.000 295.000 300.000 305.000 305.000 305.000 305.000 305.000 305.000 310.000 310.000 310.000 312.500 315.000 315.000 315.000 315.000 320.000 322.500 325.000 325.000 325.000 325.000 325.000 327.500 330.000 330.000 332.500 335.000 335.000 335.000 335.000 337.500 340.000 345.000 345.000 345.000 345.000 350.000 352.500 355.000 355.000 357.500 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 370.000 372.500 375.000 375.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 390.000 390.000 390.000 390.000 395.000 395.000 395.000 397.500 400.000 400.000 402.500 405.000 407.500 410.000 410.000 410.000 410.000 410.000 411.000 412.000 413.000 414.000 415.000 420.000 420.000 425.000 425.000 425.000 425.000 430.000 430.000 435.000 436.250 437.500 438.750 440.000 440.000 435.000 438.333 441.667 445.000 450.000 450.000 450.000 450.000 455.000 455.000 460.000 462.500 465.000 465.000 470.000 470.000 472.500 475.000 480.000 480.000 485.000 490.000 490.000 495.000 497.500 500.000 505.000 515.000 515.000 520.000 530.000 530.000 535.000 540.911 547.670 555.475 564.588 575.370 588.323 604.178 624.033
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 54 0 48 48 57 0 51 51 51 54 51 0 54 57 51 57 0 54 48 60 0 51 0 0 57 60 60 57 54 57 60 60 0 60 60 57 51 63 0 0 0 63 60 54 0 63 57 0 66 63 60 54 0 63 60 63 63 63 63 0 54 60 45 51 60 0 63 66 63 63 63 63 45 51 60 60 66 57 63 66 60 63 51 54 60 63 60 63 66 60 66 66 57 63 51 60 0 63 66 60 0 0 0 0 48 63 60 60 60 0 60 60 63 51 0 0 0 48 54 57 0 0 57 45 0 54 54 54 54 51 0 48 54 48 51 0 51 48 48 51 48 51 51 0 48 51 45 51 51 42 51 48 48 0 0 0 48 42 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</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" >
89.547 90.0 95.0 100.0 105.0 110.0 113.25 115.0 116.501 119.751 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 377.05 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.012 2.591 2.896 2.993 2.871 2.871 2.871 2.993 3.0 3.137 3.272 3.406 3.541 3.677 3.814 3.954 4.097 4.244 4.393 4.547 4.705 4.866 5.032 5.203 5.378 5.557 5.74 5.928 6.119 6.315 6.514 6.716 6.922 7.131 7.342 7.556 7.772 7.99 8.21 8.431 8.654 8.877 9.102 9.327 9.552 9.777 10.002 10.225 10.447 10.666 10.881 11.091 11.294 11.487 11.667 11.829 11.969 12.081 12.158 12.196 12.2 12.198 12.186 12.163 12.13 12.087 12.035 11.974 11.905 11.829 11.745 11.655 11.559 11.456 11.349 11.237 11.12 10.999 10.874 10.746 10.615 10.482 10.346 10.208 10.069 9.928 9.786 9.642 9.498 9.354 9.209 9.064 8.92 8.775 8.631 8.487 8.344 8.202 8.06 7.92 7.78 7.642 7.505 7.369 7.235 7.102 6.971 6.841 6.713 6.586 6.461 6.338 6.216 6.096 5.978 5.862 5.747 5.634 5.523 5.414 5.306 5.201 5.097 4.994 4.894 4.795 4.698 4.603 4.509 4.417 4.327 4.238 4.151 4.066 3.982 3.9 3.819 3.74 3.662 3.586 3.512 3.438 3.367 3.296 3.227 3.16 3.093 3.029 2.965 2.903 2.841 2.782 2.723 2.665 2.609 2.554 2.5 2.447 2.395 2.344 2.295 2.246 2.198 2.152 2.106 2.061 2.017 1.974 1.932 1.891 1.851 1.811 1.773 1.735 1.698 1.662 1.626 1.591 1.557 1.524 1.491 1.46 1.428 1.398 1.368 1.339

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.993" PeakHeight="110.0" Num="3" Error="0.0">
-30.189 12.694 -2.958
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.993" EndFrequency="12.2" PeakHeight="377.05" Num="5" zHalfNm="279.393" Error="3.72">
-213.762 -54.217 12.626 -3.428 1.482
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.751" Depth="0.122"/>
<TopsideChapman PeakHeight="377.05" PeakDensity="1846650.1" PeakScaleHeight="71.899" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
