<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-14 -045 23:40:00.000"
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 44 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: Moderate F-spread, F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.02.14 (045) 23:40:00</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">
FF202604502142340009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.953" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.612" 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="4.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="345.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="345.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="385.000" 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="0.354" 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="/" />
<URSI ID="92" Val="364.766" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="315.785" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.064" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="71.125" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="17.013" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="37.241" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="69.820" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="104">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
345.000 350.000 350.000 350.000 345.000 345.000 345.000 345.000 345.000 345.000 350.000 348.333 346.667 345.000 345.000 345.000 345.000 345.000 345.000 347.500 350.000 352.500 355.000 354.474 353.947 353.421 352.895 352.368 351.842 351.316 350.789 350.263 349.737 349.211 348.684 348.158 347.632 347.105 346.579 346.053 345.526 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 349.000 348.000 347.000 346.000 345.000 345.000 345.000 346.333 347.667 349.000 350.333 351.667 353.000 354.333 355.667 357.000 358.333 359.667 361.000 362.333 363.667 365.000 365.000 366.667 368.333 370.000 372.500 375.000 377.500 380.000 382.500 385.000 400.000 410.000 415.000 415.000 415.000 415.000 415.000 445.000 475.000 478.333 481.667 485.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 0 51 51 0 0 0 57 57 54 51 0 57 0 57 57 57 57 0 54 0 54 0 0 51 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 57 60 0 0 63 63 60 0 0 57 57 0 0 0 0 60 60 54 57 0 0 0 0 60 63 57 60 0 0 60 0 60 54 60 63 60 51 54 0 51 51 48 57 0 51 54 0 51 54 0 51 51 45 45 0 45 45 48 0 48 0 0 45
</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 1.171875 0.390625 0.390625 0.390625 -0.390625 1.953125 1.171875 1.171875 2.734375 1.171875 1.171875 0.390625 1.171875 -0.390625 1.171875 0.390625 -0.390625 1.171875 0.390625 0.390625 1.171875 -0.390625 0.390625 -2.734375 -0.390625 0.390625 1.171875 1.171875 -0.390625 1.171875 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.953125 1.171875 0.390625 0.390625 0.390625 1.171875 1.953125 0.390625 -2.734375 0.390625 -0.390625 -0.390625 0.390625 0.390625 1.171875 1.171875 1.953125 0.390625 1.171875 -0.390625 0.390625 1.953125 0.390625 0.390625 1.171875 1.953125 0.390625 0.390625 1.171875 1.171875 1.953125 1.171875 1.953125 1.953125 1.171875 -2.734375 1.171875 1.171875 -0.390625 0.390625 1.171875 0.390625 0.390625 0.390625 1.171875 0.390625 1.171875 2.734375 -1.171875 2.734375 2.734375 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="163">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 144.931 145.0 150.0 155.0 160.0 165.0 170.0 175.0 179.863 180.0 185.0 190.0 195.0 200.0 205.0 210.0 214.794 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 364.766 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.344 0.331 0.312 0.286 0.25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.201 0.223 0.245 0.267 0.289 0.311 0.333 0.354 0.357 0.432 0.536 0.669 0.826 1.003 1.196 1.408 1.638 1.889 2.164 2.465 2.797 3.161 3.56 3.994 4.463 4.961 5.48 6.008 6.531 7.034 7.503 7.929 8.305 8.625 8.888 9.092 9.237 9.323 9.35 9.35 9.332 9.285 9.21 9.112 8.991 8.852 8.696 8.527 8.346 8.155 7.957 7.752 7.543 7.332 7.118 6.904 6.69 6.477 6.266 6.058 5.852 5.651 5.453 5.259 5.07 4.886 4.706 4.532 4.362 4.198 4.038 3.884 3.735 3.59 3.451 3.316 3.186 3.06 2.939 2.823 2.711 2.603 2.499 2.399 2.302 2.21 2.121 2.035 1.953 1.874 1.798 1.725 1.655 1.588 1.523 1.461 1.402 1.345 1.29 1.237 1.187 1.138 1.092 1.047 1.004 0.963 0.924 0.886 0.85 0.815 0.781 0.749 0.719 0.689 0.661 0.634 0.608 0.583 0.559 0.536 0.514 0.493 0.473 0.453 0.435 0.417 0.4 0.383 0.368 0.352 0.338 0.324 0.311 0.298 0.286 0.274 0.263 0.252 0.242 0.232 0.222 0.213 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="9.35" PeakHeight="364.766" Num="5" zHalfNm="315.785" Error="4.461">
-150.936 2.332 -2.706 3.159 -1.821
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="104.794" Depth="0.154"/>
<TopsideChapman PeakHeight="364.766" PeakDensity="1084646.4" PeakScaleHeight="37.241" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
