<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-12 -043 15:40:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, 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" >
2026.02.12 (043) 15:40:00</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">
FF202604302121540009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.553" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.662" 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="10.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="0.700" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="510.000" 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="3.380" 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="4.355" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="344.065" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="237.197" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.653" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="133.704" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="41.698" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="76.031" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="185.170" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.170" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="87">
<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 9.8 9.85 9.9 9.95 10.0 10.05
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 325.000 325.000 330.000 330.000 335.000 337.500 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 350.000 350.000 350.000 350.000 351.250 352.500 353.750 355.000 355.000 357.500 360.000 362.500 365.000 365.000 370.000 370.000 370.000 372.500 375.000 375.000 375.000 380.000 385.000 385.000 390.000 390.000 392.500 395.000 395.000 400.000 400.000 405.000 405.000 410.000 415.000 415.000 420.000 420.000 425.000 430.000 430.000 435.000 440.000 440.000 442.500 445.000 450.000 450.000 455.000 460.000 465.000 465.000 475.000 480.000 482.500 485.000 490.000 490.000 495.000 495.000 500.000 505.000 510.000 510.000 514.668 519.997 526.140 533.297 541.744 551.862 564.203 579.589
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 51 54 57 54 0 51 54 60 60 57 48 60 57 57 0 57 54 0 63 0 54 48 0 0 0 51 60 60 60 60 0 57 66 63 63 63 63 57 60 0 60 69 69 63 57 63 66 60 69 57 63 66 57 60 60 57 51 0 48 60 66 63 63 66 63 60 54 0 51 48 60 57 57 63 60 57 57 63 63 63 54 45 0 0 0
</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 -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 -1.953125 -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" >
89.485 90.0 95.0 100.0 105.0 110.0 111.593 113.187 114.78 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 344.065 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.274 2.925 3.27 3.38 3.257 3.257 3.38 3.39 3.593 3.767 3.928 4.082 4.231 4.378 4.524 4.669 4.814 4.958 5.103 5.249 5.395 5.542 5.69 5.838 5.986 6.135 6.285 6.435 6.586 6.737 6.888 7.04 7.192 7.344 7.497 7.65 7.803 7.957 8.111 8.265 8.42 8.575 8.73 8.884 9.039 9.192 9.343 9.491 9.633 9.766 9.883 9.976 10.034 10.05 10.05 10.044 10.03 10.009 9.98 9.944 9.902 9.853 9.798 9.738 9.672 9.602 9.527 9.448 9.365 9.278 9.188 9.094 8.998 8.9 8.799 8.696 8.591 8.485 8.377 8.268 8.158 8.047 7.935 7.823 7.711 7.598 7.485 7.372 7.26 7.147 7.035 6.923 6.812 6.702 6.592 6.483 6.374 6.267 6.161 6.055 5.951 5.847 5.745 5.644 5.544 5.445 5.347 5.251 5.156 5.062 4.969 4.878 4.788 4.699 4.611 4.525 4.441 4.357 4.275 4.194 4.114 4.036 3.959 3.883 3.809 3.735 3.663 3.592 3.523 3.454 3.387 3.321 3.257 3.193 3.13 3.069 3.009 2.95 2.891 2.834 2.778 2.724 2.67 2.617 2.565 2.514 2.464 2.415 2.367 2.32 2.273 2.228 2.183 2.14 2.097 2.055 2.014 1.973 1.934 1.895 1.857 1.82 1.783 1.747 1.712 1.678 1.644 1.611 1.578 1.546 1.515 1.485 1.455 1.425 1.397 1.368 1.341 1.314 1.287 1.261 1.236 1.211 1.186 1.162 1.139 1.115

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.38" PeakHeight="110.0" Num="3" Error="0.0">
-30.493 13.14 -3.162
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.38" EndFrequency="10.05" PeakHeight="344.065" Num="5" zHalfNm="237.197" Error="3.961">
-191.237 -57.162 21.458 -3.787 1.443
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.78" Depth="0.123"/>
<TopsideChapman PeakHeight="344.065" PeakDensity="1253132.8" PeakScaleHeight="76.031" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
