<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-01-29 -029 09:20:00.000"
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" >
2026.01.29 (029) 09:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.12" 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">
FF202602901290920009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.182" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.912" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.550" 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="6.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="342.088" 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="1.435" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="295.976" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="233.786" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.078" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="88.830" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="13.356" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="49.045" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="71.080" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.360" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="101">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
270.000 265.000 262.500 260.000 260.000 260.000 260.000 260.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 260.000 260.000 257.500 255.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 261.250 262.500 263.750 265.000 266.250 267.500 268.750 270.000 271.250 272.500 273.750 275.000 276.667 278.333 280.000 280.000 280.000 280.000 280.000 282.500 285.000 285.000 286.667 288.333 290.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 300.000 305.000 305.000 310.000 310.000 310.000 310.000 315.000 315.000 320.000 320.000 325.000 326.971 329.201 331.745 334.672 338.077 342.088 346.881 352.712 359.957 369.201 381.406 398.265 423.064 463.146 538.923
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 0 60 57 0 0 57 63 63 66 66 66 69 69 69 66 66 66 66 69 69 69 69 69 69 69 69 72 0 66 66 0 0 63 63 63 63 60 63 57 54 0 0 0 0 0 0 0 0 0 0 0 69 51 0 57 0 66 54 69 0 69 69 0 0 66 72 72 72 69 72 69 66 72 66 69 57 0 69 69 66 69 66 69 69 66 69 69 66 66 66 66 69 72 69 69 66 0 0 51
</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 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 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125 2.734375 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="175">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.965 90.0 95.0 100.0 105.0 110.0 115.0 120.0 121.754 125.0 130.0 133.507 135.0 140.0 145.0 145.261 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 295.976 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.203 0.959 1.243 1.389 1.435 1.409 1.328 1.285 1.285 1.285 1.285 1.304 1.368 1.432 1.435 1.551 1.661 1.768 1.876 1.987 2.102 2.225 2.357 2.501 2.66 2.838 3.043 3.281 3.563 3.902 4.304 4.751 5.196 5.594 5.932 6.212 6.444 6.635 6.792 6.919 7.02 7.097 7.152 7.186 7.2 7.2 7.195 7.177 7.146 7.103 7.049 6.985 6.912 6.83 6.741 6.646 6.545 6.439 6.328 6.214 6.097 5.977 5.855 5.732 5.608 5.483 5.357 5.232 5.107 4.983 4.859 4.737 4.616 4.496 4.378 4.262 4.147 4.035 3.924 3.816 3.709 3.605 3.503 3.403 3.306 3.21 3.117 3.026 2.938 2.852 2.767 2.685 2.605 2.528 2.452 2.378 2.307 2.237 2.17 2.104 2.04 1.978 1.917 1.859 1.802 1.747 1.693 1.641 1.591 1.542 1.494 1.448 1.403 1.36 1.318 1.277 1.237 1.199 1.162 1.126 1.091 1.057 1.024 0.992 0.961 0.931 0.902 0.874 0.847 0.82 0.795 0.77 0.746 0.722 0.7 0.678 0.657 0.636 0.616 0.597 0.578 0.56 0.543 0.526 0.509 0.493 0.478 0.463 0.449 0.434 0.421 0.408 0.395 0.383 0.371 0.359 0.348 0.337 0.326 0.316 0.306 0.297 0.287 0.278 0.27 0.261 0.253 0.245 0.237 0.23 0.223 0.216 0.209 0.202

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.435" PeakHeight="110.0" Num="3" Error="0.0">
-27.968 9.691 -1.758
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.435" EndFrequency="7.2" PeakHeight="295.976" Num="5" zHalfNm="233.786" Error="4.661">
-142.974 4.417 -18.663 5.637 0.868
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="35.261" Depth="0.15"/>
<TopsideChapman PeakHeight="295.976" PeakDensity="643176.2" PeakScaleHeight="49.045" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
