<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-05 -036 10:00:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.02.05 (036) 10:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" 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">
FF202603602051000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.025" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.348" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="0.500" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="330.000" 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="2.069" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="324.644" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="225.028" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.080" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="145.937" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="27.260" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.708" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="114.880" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.670" 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" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 252.500 255.000 255.000 252.500 250.000 255.000 255.000 255.000 255.000 255.000 255.000 260.000 260.000 262.500 265.000 265.000 260.000 260.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 270.000 270.000 270.000 275.000 275.000 275.000 275.000 275.000 280.000 290.000 280.000 280.000 285.000 290.000 287.500 285.000 290.000 291.250 292.500 293.750 295.000 300.000 300.000 301.250 302.500 303.750 305.000 305.000 305.000 307.500 310.000 310.000 315.000 315.000 317.500 320.000 325.000 326.250 327.500 328.750 330.000 330.000 340.000 343.115 346.541 350.327 354.534 359.234 364.522 370.513 377.359 385.256 394.467 405.350 418.403 434.350 454.273 479.869 513.966 561.639 633.013 751.611
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 60 63 63 66 66 66 63 60 60 60 0 48 48 57 57 0 57 57 57 54 0 0 0 63 60 75 75 72 0 72 0 0 0 0 75 0 0 69 0 0 75 0 0 0 0 0 0 72 75 78 69 57 75 69 0 0 0 0 60 69 0 0 48 63 66 69 0 69 75 69 75 0 69 63 0 0 57 72 72 69 66 63 63 0 57 66 69 75 63 66 63 57 0 51 51 0 0 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 -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 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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 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 -2.734375 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" >
89.741 90.0 95.0 100.0 105.0 110.0 115.0 117.833 120.0 125.0 125.666 130.0 133.499 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 324.644 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.222 1.387 1.792 2.002 2.069 2.016 1.938 1.938 1.938 1.938 2.01 2.069 2.118 2.276 2.427 2.574 2.718 2.862 3.007 3.155 3.308 3.467 3.635 3.813 4.004 4.212 4.442 4.7 4.993 5.325 5.69 6.061 6.401 6.688 6.924 7.118 7.28 7.415 7.53 7.627 7.711 7.783 7.843 7.895 7.938 7.974 8.002 8.024 8.039 8.047 8.05 8.05 8.047 8.038 8.023 8.004 7.979 7.95 7.916 7.878 7.836 7.791 7.741 7.688 7.633 7.574 7.512 7.448 7.381 7.313 7.242 7.169 7.095 7.019 6.942 6.864 6.784 6.704 6.622 6.54 6.458 6.375 6.291 6.207 6.123 6.039 5.955 5.871 5.787 5.703 5.62 5.537 5.454 5.371 5.29 5.208 5.127 5.047 4.967 4.888 4.81 4.733 4.656 4.58 4.505 4.43 4.357 4.284 4.212 4.141 4.071 4.002 3.933 3.866 3.799 3.733 3.669 3.605 3.542 3.48 3.419 3.358 3.299 3.24 3.183 3.126 3.07 3.015 2.961 2.908 2.856 2.804 2.753 2.704 2.654 2.606 2.559 2.512 2.466 2.421 2.377 2.333 2.29 2.248 2.207 2.166 2.126 2.087 2.049 2.011 1.974 1.937 1.901 1.866 1.831 1.797 1.764 1.731 1.699 1.667 1.636 1.605 1.575 1.546 1.517 1.489 1.461 1.434 1.407 1.38 1.354 1.329 1.304 1.28 1.256 1.232 1.209 1.186 1.164 1.142 1.121 1.1 1.079 1.059 1.039 1.019 1.0

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.069" PeakHeight="110.0" Num="3" Error="0.0">
-29.171 11.256 -2.344
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.069" EndFrequency="8.05" PeakHeight="324.644" Num="5" zHalfNm="225.028" Error="5.094">
-210.545 39.248 -32.228 14.712 -2.332
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="23.499" Depth="0.131"/>
<TopsideChapman PeakHeight="324.644" PeakDensity="804001.25" PeakScaleHeight="81.708" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
