<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-15 -046 09:00:00.000"
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" >
2026.02.15 (046) 09:00:00</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">
FF202604602150900009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="6.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.994" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.414" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.500" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="370.275" 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="0.965" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="328.694" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="248.045" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.294" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="115.657" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.432" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="63.905" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="96.000" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.080" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="81">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 6.0 6.05 6.1 6.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 260.000 260.000 260.500 261.000 261.500 262.000 262.500 263.000 263.500 264.000 264.500 265.000 265.000 265.000 265.833 266.667 267.500 268.333 269.167 270.000 270.000 270.000 270.000 270.000 270.000 270.000 275.000 275.000 275.000 276.667 278.333 280.000 280.000 280.000 280.000 285.000 287.500 290.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 300.000 305.000 305.000 305.000 310.000 310.000 312.500 315.000 315.000 320.000 320.000 325.000 325.000 330.000 330.000 335.000 340.000 342.500 345.000 345.000 350.000 354.001 358.607 363.965 370.275 377.817 386.991 398.389 412.934 432.136 458.658 497.672 560.722 679.913
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 63 0 63 0 0 0 0 0 0 0 69 0 69 0 0 0 0 0 66 0 69 0 0 0 69 72 75 72 0 0 69 69 0 66 60 0 54 57 69 69 63 66 51 66 63 66 54 60 63 54 63 0 63 63 54 63 57 63 63 66 66 63 0 63 63 63 66 63 66 60 63 66 63 0 0 0 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 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 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 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 -1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 -1.953125 0.390625 -2.734375 2.734375 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.31 95.0 100.0 105.0 110.0 115.0 120.0 125.0 127.77 130.0 135.0 140.0 145.0 145.539 150.0 155.0 160.0 163.309 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 328.694 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.642 0.836 0.934 0.965 0.949 0.899 0.809 0.738 0.738 0.738 0.738 0.738 0.738 0.795 0.859 0.923 0.965 1.006 1.138 1.278 1.42 1.562 1.707 1.855 2.01 2.172 2.346 2.533 2.738 2.966 3.221 3.506 3.821 4.151 4.471 4.761 5.009 5.219 5.395 5.543 5.668 5.774 5.862 5.936 5.998 6.048 6.087 6.117 6.137 6.148 6.15 6.15 6.144 6.132 6.113 6.088 6.057 6.021 5.98 5.934 5.883 5.829 5.771 5.71 5.645 5.578 5.508 5.436 5.363 5.287 5.21 5.132 5.052 4.972 4.891 4.81 4.728 4.646 4.563 4.481 4.399 4.318 4.236 4.155 4.075 3.995 3.916 3.838 3.761 3.684 3.608 3.533 3.459 3.387 3.315 3.244 3.174 3.106 3.038 2.972 2.907 2.843 2.78 2.718 2.657 2.597 2.539 2.482 2.425 2.37 2.316 2.263 2.211 2.16 2.111 2.062 2.014 1.968 1.922 1.877 1.833 1.79 1.749 1.708 1.667 1.628 1.59 1.552 1.516 1.48 1.445 1.411 1.377 1.345 1.313 1.282 1.251 1.221 1.192 1.164 1.136 1.109 1.083 1.057 1.031 1.007 0.983 0.959 0.936 0.914 0.892 0.871 0.85 0.829 0.809 0.79 0.771 0.752 0.734 0.717 0.699 0.683 0.666 0.65 0.635 0.619 0.604 0.59 0.576 0.562 0.548 0.535 0.522 0.51 0.497 0.485 0.474 0.462 0.451 0.44 0.43 0.419 0.409 0.399 0.39 0.38

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.965" PeakHeight="110.0" Num="3" Error="0.0">
-26.346 7.833 -1.177
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.965" EndFrequency="6.15" PeakHeight="328.694" Num="5" zHalfNm="248.045" Error="4.297">
-184.213 32.451 -22.655 11.841 -2.809
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="53.309" Depth="0.227"/>
<TopsideChapman PeakHeight="328.694" PeakDensity="469261.78" PeakScaleHeight="63.905" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
