<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 18:50:00.000"
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: 70% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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" >
2026.03.02 (061) 18:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.16" 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">
FF202606103021850009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="13.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.685" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="34.909" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="205.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="205.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="12.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="451.330" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.837" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="361.009" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="274.589" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.579" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="119.662" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.757" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="65.286" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="140.260" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.490" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="187">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4 12.45 12.5 12.55 12.6 12.65 12.7 12.75 12.8 12.85 12.9 12.95 13.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
205.000 210.000 210.000 215.000 220.000 223.333 226.667 230.000 233.333 236.667 240.000 240.000 245.000 246.667 248.333 250.000 255.000 255.000 260.000 265.000 265.000 265.000 265.000 265.000 267.500 270.000 270.000 270.000 270.000 272.500 275.000 280.000 280.000 280.000 280.000 280.000 285.000 285.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 295.000 300.000 300.000 300.000 300.000 301.667 303.333 305.000 305.000 305.000 305.000 308.333 311.667 315.000 315.000 318.333 321.667 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 327.500 330.000 330.000 335.000 335.000 335.000 335.000 337.000 339.000 341.000 343.000 345.000 345.000 345.000 345.000 345.000 345.000 347.500 350.000 355.000 357.500 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 372.500 375.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 380.000 380.000 380.000 382.500 385.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 390.000 390.000 395.000 395.833 396.667 397.500 398.333 399.167 400.000 400.833 401.667 402.500 403.333 404.167 405.000 405.000 405.000 405.000 407.500 410.000 410.000 412.500 415.000 417.500 420.000 422.500 425.000 425.000 425.000 430.000 435.000 435.000 435.000 440.000 440.000 440.000 440.000 440.000 442.500 445.000 448.054 451.330 454.852 458.649 462.755 467.210 472.059 477.357 483.170 489.577 496.674 504.577 513.434 523.428 534.793 547.830 562.941 580.660 601.728
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 51 45 51 51 0 0 48 0 0 45 51 48 0 0 54 57 57 0 45 0 0 0 57 0 63 63 60 57 0 60 0 0 57 57 57 63 60 0 0 63 60 63 66 51 0 0 0 63 63 0 0 69 69 63 54 0 0 69 69 0 48 57 66 0 69 66 66 63 54 0 63 63 69 69 69 72 0 0 0 0 75 75 0 69 66 57 0 69 72 60 66 72 75 75 72 72 69 72 0 75 72 69 0 75 75 69 0 75 75 72 75 72 75 0 75 78 72 72 0 72 0 60 72 63 0 0 0 63 60 57 0 0 0 0 0 0 0 0 0 0 0 60 60 0 60 0 60 57 0 0 0 51 42 51 54 54 54 45 51 54 48 54 51 51 0 51 0 51 42 48 51 51 45 48 48 48 51 51 42 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 1.953125 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 2.734375 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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 -1.171875 0.390625 -1.171875 -2.734375 0.390625 -1.953125
</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" >
89.574 90.0 95.0 100.0 105.0 110.0 113.961 115.0 117.921 120.0 121.882 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 361.009 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.907 2.456 2.745 2.837 2.715 2.715 2.715 2.779 2.837 2.924 3.065 3.209 3.356 3.507 3.661 3.819 3.981 4.148 4.319 4.495 4.675 4.861 5.052 5.248 5.45 5.658 5.871 6.091 6.317 6.549 6.788 7.033 7.285 7.543 7.808 8.079 8.355 8.638 8.925 9.216 9.512 9.809 10.108 10.407 10.703 10.995 11.28 11.555 11.817 12.062 12.287 12.487 12.659 12.799 12.904 12.971 12.999 13.0 12.995 12.977 12.944 12.899 12.842 12.773 12.694 12.605 12.506 12.399 12.284 12.162 12.033 11.898 11.758 11.613 11.463 11.31 11.153 10.993 10.831 10.667 10.5 10.333 10.164 9.995 9.825 9.655 9.485 9.316 9.146 8.978 8.811 8.644 8.479 8.315 8.153 7.992 7.833 7.676 7.52 7.367 7.215 7.066 6.919 6.774 6.631 6.49 6.351 6.215 6.081 5.95 5.82 5.693 5.569 5.446 5.326 5.208 5.092 4.979 4.868 4.759 4.652 4.547 4.444 4.344 4.245 4.149 4.054 3.962 3.872 3.783 3.696 3.611 3.528 3.447 3.368 3.29 3.214 3.14 3.067 2.996 2.927 2.859 2.792 2.727 2.664 2.602 2.541 2.482 2.424 2.367 2.312 2.258 2.205 2.154 2.103 2.054 2.006 1.959 1.913 1.868 1.824 1.781 1.739 1.698 1.659 1.62 1.581 1.544 1.508 1.472 1.438 1.404 1.371 1.339 1.307 1.276 1.246 1.217 1.188 1.16 1.133 1.106 1.08 1.054 1.03 1.005

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.837" PeakHeight="110.0" Num="3" Error="0.0">
-30.053 12.495 -2.868
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.837" EndFrequency="13.0" PeakHeight="361.009" Num="5" zHalfNm="274.589" Error="3.754">
-202.571 -41.638 4.482 0.606 -0.0060
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.882" Depth="0.122"/>
<TopsideChapman PeakHeight="361.009" PeakDensity="2096774.2" PeakScaleHeight="65.286" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
