<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-13 -044 13:00:00.000"
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: 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" >
2026.02.13 (044) 13:00:00</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">
FF202604402131300009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.420" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.019" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="0.450" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="420.000" 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="3.205" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.273" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="365.458" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="234.330" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.082" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="164.386" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="40.430" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="91.053" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="210.810" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.340" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="86">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 267.500 275.000 281.000 287.000 293.000 299.000 305.000 310.000 315.000 315.000 320.000 325.000 325.000 325.000 326.667 328.333 330.000 335.000 335.000 335.000 338.750 342.500 346.250 350.000 350.000 350.000 352.500 355.000 357.500 360.000 363.125 366.250 369.375 372.500 375.625 378.750 381.875 385.000 385.000 388.333 391.667 395.000 400.000 400.000 403.333 406.667 410.000 415.000 420.000 420.000 425.000 430.000 435.000 440.000 445.000 450.000 455.000 460.000 470.000 475.000 475.000 480.000 490.000 500.000 505.000 515.000 520.000 525.000 530.000 535.000 540.000 545.000 550.000 550.000 555.000 560.000 565.000 570.000 576.358 583.689 592.232 602.318 614.404 629.151 647.547
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 0 51 0 51 45 0 48 45 45 51 0 51 57 54 0 0 57 57 54 48 0 0 0 57 60 57 0 0 0 54 0 0 0 0 60 0 0 48 54 0 0 54 48 48 0 0 48 51 51 54 0 57 0 0 0 0 0 57 54 57 60 60 60 57 51 54 51 48 54 57 60 63 63 63 63 66 66 66 66 63 57 48 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 1.953125 -0.390625 1.953125 -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 0.390625 0.390625 -0.390625 -0.390625 0.390625 -1.171875 2.734375 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 1.953125 1.171875 -1.171875
</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" >
89.512 90.0 95.0 100.0 105.0 110.0 112.325 114.649 115.0 116.974 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 365.458 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.155 2.774 3.101 3.205 3.083 3.083 3.101 3.205 3.29 3.422 3.548 3.673 3.798 3.924 4.052 4.184 4.319 4.458 4.599 4.744 4.89 5.038 5.187 5.335 5.482 5.628 5.772 5.913 6.052 6.188 6.321 6.452 6.58 6.706 6.829 6.95 7.069 7.186 7.301 7.415 7.528 7.639 7.749 7.858 7.966 8.073 8.18 8.285 8.39 8.493 8.595 8.695 8.791 8.882 8.964 9.033 9.081 9.1 9.1 9.098 9.09 9.078 9.061 9.039 9.013 8.982 8.948 8.909 8.867 8.822 8.773 8.721 8.666 8.608 8.548 8.485 8.419 8.352 8.283 8.211 8.138 8.064 7.988 7.91 7.832 7.752 7.671 7.59 7.508 7.425 7.341 7.257 7.172 7.088 7.003 6.917 6.832 6.747 6.661 6.576 6.491 6.406 6.322 6.237 6.154 6.07 5.987 5.904 5.822 5.74 5.659 5.579 5.499 5.42 5.341 5.263 5.186 5.11 5.034 4.959 4.885 4.812 4.739 4.667 4.596 4.526 4.456 4.388 4.32 4.253 4.187 4.121 4.057 3.993 3.93 3.868 3.807 3.747 3.687 3.628 3.57 3.513 3.457 3.401 3.346 3.292 3.239 3.187 3.135 3.084 3.034 2.984 2.935 2.887 2.84 2.794 2.748 2.703 2.658 2.614 2.571 2.529 2.487 2.446 2.405 2.365 2.326 2.288 2.25 2.212 2.175 2.139 2.103 2.068 2.034 2.0 1.966 1.933 1.901 1.869 1.838 1.807 1.777 1.747 1.718 1.689

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.205" PeakHeight="110.0" Num="3" Error="0.0">
-30.361 12.946 -3.073
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.205" EndFrequency="9.1" PeakHeight="365.458" Num="5" zHalfNm="234.33" Error="5.296">
-214.668 -52.314 26.912 -12.06 3.646
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.974" Depth="0.122"/>
<TopsideChapman PeakHeight="365.458" PeakDensity="1027419.4" PeakScaleHeight="91.053" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
