<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-14 -045 18:00:00.000"
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: 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" >
2026.02.14 (045) 18:00:00</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">
FF202604502141800009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.558" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.574" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.077" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.212" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="384.270" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.521" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.470" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="149.226" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="63.169" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.562" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="169.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.670" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="157">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 220.000 220.000 222.500 225.000 230.000 235.000 240.000 245.000 250.000 255.000 260.000 265.000 275.000 280.000 285.000 290.000 290.000 295.000 300.000 305.000 305.000 305.000 305.000 305.000 307.000 309.000 311.000 313.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 347.222 349.444 351.667 353.889 356.111 358.333 360.556 362.778 365.000 365.000 367.500 370.000 370.000 370.000 370.000 370.000 375.000 375.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 395.000 395.000 400.000 400.000 400.000 400.000 400.000 400.000 405.000 410.000 410.000 410.000 410.000 415.000 415.000 415.000 415.000 420.000 420.000 425.000 425.000 425.000 427.500 430.000 430.000 430.000 435.000 435.000 435.000 435.000 437.500 440.000 441.667 443.333 445.000 445.000 450.000 452.000 454.000 456.000 458.000 460.000 465.000 465.000 460.000 470.000 472.500 475.000 480.000 475.000 490.000 495.000 500.000 500.000 510.000 510.000 517.500 523.787 530.764 538.554 547.305 557.209 568.508 581.520 596.667 614.520 635.876 661.879 694.230
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 48 54 0 57 57 0 0 0 48 0 51 57 57 0 60 57 54 54 54 54 45 60 57 48 0 0 57 0 63 66 63 60 57 57 57 60 63 63 60 60 60 60 57 51 48 60 57 57 54 63 63 63 63 60 54 66 63 57 51 45 0 0 0 0 0 0 0 48 51 0 48 57 63 66 66 63 66 57 63 66 66 60 66 66 60 66 69 60 66 51 57 63 66 66 63 66 57 63 66 66 63 66 63 63 60 63 54 57 60 48 54 0 60 51 54 57 57 0 57 0 0 54 54 51 0 48 0 0 51 45 48 0 48 45 48 48 0 48 45 45 48 45 45 0 48 48 48 48 45 45 45 0 0 42 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 -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 -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 2.734375 -0.390625 -0.390625 0.390625 -1.953125 0.390625 -0.390625 -0.390625 2.734375 -0.390625 -0.390625 -0.390625 0.390625 0.390625 -0.390625 -0.390625 1.953125 -0.390625 -0.390625 -1.953125 -0.390625 -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" >
89.533 90.0 95.0 100.0 105.0 110.0 112.878 115.0 115.755 118.633 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 384.27 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.069 2.663 2.977 3.077 2.955 2.955 2.955 3.077 3.115 3.253 3.389 3.522 3.656 3.79 3.925 4.062 4.2 4.341 4.484 4.631 4.78 4.933 5.09 5.25 5.415 5.584 5.757 5.935 6.118 6.305 6.497 6.694 6.896 7.103 7.314 7.529 7.748 7.971 8.197 8.426 8.656 8.888 9.12 9.351 9.58 9.806 10.028 10.244 10.454 10.655 10.846 11.026 11.194 11.347 11.486 11.608 11.713 11.8 11.867 11.915 11.943 11.95 11.95 11.944 11.931 11.909 11.88 11.844 11.801 11.752 11.696 11.634 11.567 11.495 11.417 11.336 11.249 11.159 11.065 10.968 10.867 10.763 10.657 10.548 10.437 10.324 10.209 10.093 9.975 9.856 9.735 9.614 9.492 9.37 9.247 9.123 9.0 8.876 8.753 8.629 8.506 8.383 8.261 8.139 8.018 7.897 7.777 7.658 7.54 7.423 7.306 7.191 7.076 6.963 6.851 6.74 6.63 6.521 6.414 6.308 6.203 6.099 5.996 5.895 5.795 5.697 5.599 5.503 5.409 5.315 5.223 5.133 5.043 4.955 4.868 4.783 4.699 4.616 4.534 4.454 4.375 4.297 4.22 4.145 4.071 3.998 3.926 3.855 3.786 3.717 3.65 3.584 3.519 3.455 3.393 3.331 3.27 3.211 3.152 3.094 3.038 2.982 2.928 2.874 2.821 2.769 2.718 2.668 2.619 2.571 2.524 2.477 2.431 2.387 2.342 2.299 2.257 2.215 2.174 2.134 2.094 2.055 2.017 1.98 1.943 1.907

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.077" PeakHeight="110.0" Num="3" Error="0.0">
-30.259 12.796 -3.004
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.077" EndFrequency="11.95" PeakHeight="384.27" Num="5" zHalfNm="275.521" Error="4.555">
-233.708 -35.324 1.043 1.977 0.375
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.633" Depth="0.122"/>
<TopsideChapman PeakHeight="384.27" PeakDensity="1771743.1" PeakScaleHeight="82.562" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
