<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-15 -046 08:20:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2x cusp</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) 08:20:00</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">
FF202604602150820009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="5.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.090" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.385" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="362.150" 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="0.391" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="320.012" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="264.661" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.096" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="78.845" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="7.635" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="42.095" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="69.040" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.370" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="83">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.85 1.9 1.95 2.0 2.05 2.1 2.15 2.2 2.25 2.3 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
265.000 265.000 265.000 260.000 255.000 255.000 255.000 255.000 260.000 260.000 260.000 260.000 261.364 262.727 264.091 265.455 266.818 268.182 269.545 270.909 272.273 273.636 275.000 275.000 275.000 275.000 275.000 275.000 275.000 276.250 277.500 278.750 280.000 280.000 280.000 280.000 280.000 280.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 295.000 295.000 300.000 300.000 302.500 305.000 310.000 310.000 310.000 310.000 315.000 315.000 317.500 320.000 320.000 325.000 330.000 330.000 330.000 335.000 340.000 340.000 340.000 345.000 348.257 352.081 356.635 362.150 368.964 377.600 388.900 404.321 426.621 461.726 525.103
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 54 60 66 54 0 0 0 66 69 0 0 0 0 0 0 0 0 0 0 0 0 54 66 51 75 0 72 72 0 0 57 75 72 0 0 0 0 60 57 66 0 0 63 63 66 75 60 66 66 75 78 0 75 66 66 72 75 69 60 0 66 69 0 57 57 63 60 54 69 57 63 66 60 0 66 72 72 72 69 0 51 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 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.171875 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 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="155">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
92.811 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.452 140.0 145.0 150.0 155.0 160.0 165.0 168.905 170.0 175.0 180.0 185.0 190.0 195.0 198.357 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 320.012 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.258 0.339 0.379 0.391 0.387 0.374 0.352 0.318 0.267 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.207 0.24 0.272 0.304 0.337 0.369 0.391 0.417 0.511 0.634 0.788 0.976 1.201 1.47 1.787 2.156 2.57 3.009 3.446 3.858 4.231 4.562 4.849 5.097 5.308 5.485 5.631 5.748 5.837 5.9 5.938 5.95 5.95 5.942 5.919 5.882 5.832 5.771 5.7 5.619 5.531 5.436 5.335 5.229 5.119 5.005 4.889 4.771 4.651 4.531 4.41 4.29 4.17 4.05 3.932 3.816 3.7 3.587 3.476 3.367 3.26 3.155 3.053 2.953 2.855 2.76 2.668 2.578 2.491 2.406 2.324 2.244 2.166 2.091 2.019 1.948 1.88 1.814 1.75 1.688 1.628 1.571 1.515 1.461 1.409 1.359 1.31 1.263 1.218 1.174 1.132 1.091 1.052 1.014 0.977 0.942 0.908 0.875 0.844 0.813 0.784 0.755 0.728 0.702 0.676 0.652 0.628 0.605 0.583 0.562 0.542 0.522 0.503 0.485 0.467 0.45 0.434 0.418 0.403 0.388 0.374 0.36 0.347 0.335 0.322 0.311 0.299 0.288 0.278 0.268 0.258 0.249 0.24 0.231 0.222 0.214 0.207

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.391" PeakHeight="110.0" Num="3" Error="0.0">
-19.967 2.981 -0.203
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.391" EndFrequency="5.95" PeakHeight="320.012" Num="5" zHalfNm="264.661" Error="2.205">
-137.657 25.756 -12.626 3.811 -0.939
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="88.357" Depth="0.191"/>
<TopsideChapman PeakHeight="320.012" PeakDensity="439236.97" PeakScaleHeight="42.095" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
