<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-14 -045 12:00:00.000"
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) 12:00:00</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">
FF202604502141200009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="29" >
<URSI ID="00" Val="9.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.571" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.678" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.950" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="95.000" Name="h`Es" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="400.000" 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="2.982" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.165" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="348.515" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.699" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.096" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.450" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="160.177" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.501" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="87.064" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="181.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.670" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="103">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 245.000 245.000 250.000 252.500 255.000 255.000 265.000 267.500 270.000 270.000 270.000 270.000 270.000 275.000 275.000 275.000 276.667 278.333 280.000 280.000 285.000 286.429 287.857 289.286 290.714 292.143 293.571 295.000 295.000 295.000 300.000 303.333 306.667 310.000 310.000 310.000 315.000 315.000 315.000 320.000 320.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 340.000 340.000 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 390.000 395.000 395.000 400.000 400.000 410.000 415.000 415.000 420.000 425.000 435.000 440.000 440.000 445.000 450.000 455.000 460.000 462.500 465.000 470.000 475.000 480.000 480.000 484.231 488.915 494.129 499.967 506.548 514.026 522.595 532.514 544.129 557.915 574.546 595.000 620.770 654.235
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 51 54 0 54 54 51 0 54 48 57 0 54 60 54 51 45 0 57 60 60 0 0 0 0 54 0 0 57 51 57 0 0 45 48 63 60 66 69 66 69 63 69 57 66 69 66 69 60 63 57 66 60 66 57 66 63 69 66 63 69 69 69 69 66 63 60 66 66 66 66 63 66 69 69 60 54 60 51 54 51 48 0 48 51 57 60 60 60 60 63 60 60 54 54 54 54 51 51 0 45 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -0.390625 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 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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 2.734375 -0.390625 -0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="11">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
100.000 95.000 96.667 98.333 100.000 95.000 95.000 95.000 95.000 95.000 100.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 0 0 0 63 60 0 0 0 54
</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 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" >
89.548 90.0 95.0 100.0 105.0 110.0 113.298 115.0 116.596 119.894 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 348.515 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.004 2.581 2.885 2.982 2.86 2.86 2.86 2.982 2.985 3.138 3.287 3.436 3.588 3.745 3.908 4.076 4.251 4.432 4.619 4.81 5.004 5.2 5.396 5.591 5.784 5.974 6.16 6.343 6.521 6.696 6.866 7.033 7.196 7.355 7.511 7.664 7.814 7.96 8.103 8.243 8.38 8.514 8.644 8.77 8.891 9.007 9.118 9.221 9.316 9.4 9.473 9.53 9.572 9.595 9.6 9.6 9.595 9.584 9.568 9.546 9.519 9.487 9.45 9.409 9.363 9.313 9.26 9.203 9.142 9.078 9.011 8.942 8.869 8.794 8.717 8.638 8.557 8.474 8.39 8.304 8.216 8.128 8.038 7.947 7.856 7.764 7.671 7.578 7.485 7.391 7.297 7.203 7.109 7.015 6.921 6.827 6.733 6.64 6.547 6.455 6.363 6.271 6.18 6.09 6.0 5.911 5.823 5.736 5.649 5.563 5.478 5.393 5.31 5.227 5.145 5.064 4.984 4.905 4.827 4.75 4.674 4.598 4.524 4.45 4.378 4.306 4.236 4.166 4.097 4.03 3.963 3.897 3.832 3.768 3.705 3.643 3.581 3.521 3.462 3.403 3.345 3.289 3.233 3.178 3.123 3.07 3.017 2.966 2.915 2.865 2.816 2.767 2.719 2.672 2.626 2.581 2.536 2.492 2.449 2.406 2.365 2.324 2.283 2.243 2.204 2.166 2.128 2.091 2.054 2.018 1.983 1.948 1.914 1.881 1.848 1.815 1.783 1.752 1.721 1.691 1.661 1.632 1.603 1.575 1.547 1.52

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.982" PeakHeight="110.0" Num="3" Error="0.0">
-30.18 12.68 -2.952
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.982" EndFrequency="9.6" PeakHeight="348.515" Num="5" zHalfNm="227.699" Error="3.519">
-214.645 -22.294 13.47 -7.45 2.298
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.894" Depth="0.122"/>
<TopsideChapman PeakHeight="348.515" PeakDensity="1143424.4" PeakScaleHeight="87.064" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
