<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-05 -036 20:00:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</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) 20:00:00</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">
FF202603602052000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.423" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.199" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.700" 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="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="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="526.667" 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="2.311" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="394.934" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="284.749" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.474" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="148.473" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.703" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.892" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="174.870" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.400" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="147">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 240.000 240.000 240.000 240.000 240.000 245.000 250.000 250.000 250.000 250.000 250.000 255.000 257.500 260.000 260.000 260.000 260.000 261.000 262.000 263.000 264.000 265.000 275.000 276.500 278.000 279.500 281.000 282.500 284.000 285.500 287.000 288.500 290.000 290.000 290.000 295.000 298.000 301.000 304.000 307.000 310.000 310.000 310.000 315.000 315.000 320.000 320.000 320.000 325.000 325.000 328.333 331.667 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 350.000 353.333 356.667 360.000 360.000 360.000 362.500 365.000 365.000 370.000 375.000 375.000 377.500 380.000 385.000 385.000 385.000 387.500 390.000 395.000 400.000 401.250 402.500 403.750 405.000 410.000 415.000 415.000 415.000 420.000 420.000 425.000 430.000 430.000 435.000 435.000 440.000 445.000 445.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 475.000 480.000 480.000 485.000 487.500 490.000 490.000 490.000 495.000 500.000 500.000 505.000 505.000 505.000 510.000 515.000 515.000 520.000 520.000 523.333 526.667 530.000 535.000 540.000 545.000 550.000 555.742 562.003 568.857 576.392 584.715 593.957 604.277 615.878 629.013 644.009
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 60 0 63 57 57 0 57 57 63 51 51 60 0 54 57 57 54 0 0 0 0 51 0 0 0 0 0 0 57 45 0 0 63 0 54 63 0 0 0 0 60 63 63 63 63 60 63 0 60 0 0 0 57 63 0 60 63 60 63 60 57 0 0 45 57 60 0 60 60 63 54 60 54 60 51 57 63 0 63 57 48 0 0 0 63 60 54 63 63 63 63 63 60 66 66 69 66 60 69 63 69 66 69 66 66 63 63 60 66 66 69 66 69 63 51 63 69 69 0 57 66 51 63 66 63 60 63 63 60 0 0 57 0 0 0 54 54 57 57 54 54 51 48 45 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 2.734375 0.390625 -0.390625 -0.390625 0.390625 2.734375 0.390625 -1.171875 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 -1.171875 -0.390625 1.953125 1.171875 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -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 -1.171875 -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 -2.734375 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.171875 -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" >
89.681 90.0 95.0 100.0 105.0 110.0 115.0 116.546 120.0 123.091 125.0 129.637 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 394.934 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.227 1.551 2.001 2.236 2.311 2.237 2.184 2.184 2.184 2.221 2.311 2.319 2.428 2.539 2.655 2.775 2.901 3.034 3.174 3.32 3.475 3.636 3.805 3.979 4.159 4.343 4.529 4.717 4.905 5.093 5.28 5.465 5.648 5.828 6.007 6.183 6.357 6.529 6.699 6.867 7.034 7.199 7.362 7.524 7.685 7.845 8.005 8.163 8.321 8.478 8.635 8.791 8.947 9.102 9.256 9.409 9.561 9.709 9.854 9.991 10.119 10.231 10.321 10.38 10.4 10.4 10.396 10.384 10.364 10.336 10.302 10.261 10.214 10.161 10.102 10.038 9.969 9.895 9.817 9.735 9.649 9.56 9.467 9.372 9.274 9.174 9.071 8.966 8.86 8.752 8.643 8.533 8.421 8.309 8.196 8.083 7.969 7.855 7.742 7.628 7.514 7.4 7.287 7.174 7.062 6.95 6.839 6.729 6.619 6.51 6.402 6.296 6.19 6.085 5.981 5.879 5.777 5.677 5.578 5.48 5.383 5.287 5.193 5.1 5.009 4.918 4.829 4.741 4.655 4.569 4.485 4.403 4.321 4.241 4.162 4.085 4.008 3.933 3.859 3.787 3.715 3.645 3.576 3.508 3.441 3.376 3.311 3.248 3.186 3.125 3.065 3.006 2.948 2.891 2.835 2.781 2.727 2.674 2.622 2.571 2.521 2.472 2.424 2.377 2.331 2.285 2.241 2.197 2.154 2.112 2.071 2.03 1.99 1.951 1.913 1.876 1.839 1.803 1.767 1.732 1.698 1.665 1.632 1.6 1.569 1.538 1.507

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.311" PeakHeight="110.0" Num="3" Error="0.0">
-29.494 11.701 -2.526
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.311" EndFrequency="10.4" PeakHeight="394.934" Num="5" zHalfNm="284.749" Error="3.81">
-230.711 -51.243 26.92 -13.328 3.065
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="19.637" Depth="0.127"/>
<TopsideChapman PeakHeight="394.934" PeakDensity="1341935.5" PeakScaleHeight="77.892" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
