<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-10 -069 16:10:00.000"
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: 80% PACIFIC flags: Trace overlaps while constructing baseline</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" >
2026.03.10 (069) 16:10:00</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">
FF202606903101610009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="13.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.619" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="34.443" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="295.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="295.000" 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="460.000" 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="3.366" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.349" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="357.354" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="273.602" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.761" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="111.992" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.683" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="62.568" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="149.690" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="157">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 13.05 13.1 13.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
295.000 295.000 295.000 297.143 299.286 301.429 303.571 305.714 307.857 310.000 310.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 322.500 325.000 325.000 325.000 325.000 325.000 326.250 327.500 328.750 330.000 335.000 335.000 335.000 336.000 337.000 338.000 339.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 350.000 350.833 351.667 352.500 353.333 354.167 355.000 355.000 357.500 360.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 380.000 380.000 380.000 382.500 385.000 385.000 385.000 385.000 386.667 388.333 390.000 390.000 390.000 390.000 392.500 395.000 397.500 400.000 400.000 400.000 400.000 400.000 400.000 400.000 405.000 405.000 405.000 405.000 405.000 410.000 410.000 410.000 410.000 410.000 410.000 415.000 415.000 415.000 417.500 420.000 422.500 425.000 425.000 427.000 429.000 431.000 433.000 435.000 430.000 431.667 433.333 435.000 435.000 440.000 445.000 446.667 448.333 450.000 460.000 460.000 460.000 460.000 460.000 470.000 470.000 475.000 475.000 480.000 485.000 485.000 490.000 495.000 495.000 505.000 505.000 510.000 515.000 520.000 526.358 533.689 542.232 552.318 564.404
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 51 48 0 48 0 0 51 0 54 51 51 0 54 51 57 57 57 0 51 54 54 51 51 0 48 0 45 51 57 54 0 0 0 0 54 60 60 57 60 63 63 57 51 54 60 60 57 54 51 0 0 0 60 0 63 48 0 63 60 60 66 66 63 60 63 63 63 66 66 66 69 57 0 60 66 66 54 57 57 57 54 0 0 57 60 57 54 0 0 0 45 51 54 57 57 57 57 57 57 60 60 60 57 60 57 0 0 57 57 0 51 0 54 0 51 51 0 0 48 0 48 51 0 48 45 42 0 51 0 0 48 42 51 54 54 0 54 54 57 54 0 54 54 57 57 51 48 54 0 54 51 51 0 45 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 -0.390625 1.953125 0.390625 -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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 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 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 2.734375 1.171875
</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" >
89.488 90.0 95.0 100.0 105.0 110.0 111.648 113.295 114.943 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 357.354 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.265 2.913 3.256 3.366 3.243 3.243 3.366 3.369 3.569 3.741 3.901 4.053 4.202 4.349 4.496 4.643 4.791 4.941 5.093 5.249 5.407 5.57 5.736 5.906 6.081 6.261 6.446 6.637 6.833 7.034 7.242 7.455 7.674 7.899 8.131 8.368 8.61 8.859 9.113 9.371 9.635 9.902 10.174 10.448 10.725 11.003 11.281 11.556 11.828 12.092 12.344 12.578 12.786 12.956 13.079 13.143 13.15 13.148 13.131 13.1 13.054 12.995 12.923 12.839 12.745 12.64 12.526 12.403 12.273 12.135 11.991 11.841 11.686 11.526 11.363 11.196 11.025 10.853 10.678 10.501 10.324 10.145 9.966 9.787 9.607 9.428 9.25 9.072 8.895 8.72 8.546 8.373 8.202 8.033 7.866 7.7 7.537 7.376 7.217 7.061 6.907 6.755 6.606 6.459 6.315 6.173 6.034 5.897 5.763 5.631 5.502 5.375 5.251 5.13 5.01 4.893 4.779 4.667 4.557 4.45 4.345 4.242 4.141 4.043 3.947 3.853 3.761 3.671 3.583 3.497 3.413 3.331 3.25 3.172 3.095 3.021 2.947 2.876 2.806 2.738 2.672 2.607 2.543 2.482 2.421 2.362 2.305 2.248 2.194 2.14 2.088 2.037 1.987 1.938 1.891 1.845 1.799 1.755 1.712 1.67 1.629 1.589 1.55 1.512 1.475 1.439 1.404 1.369 1.336 1.303 1.271 1.239 1.209 1.179 1.15 1.122 1.094 1.067 1.041 1.016 0.991 0.966 0.942 0.919 0.897 0.874

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.366" PeakHeight="110.0" Num="3" Error="0.0">
-30.483 13.126 -3.155
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.366" EndFrequency="13.15" PeakHeight="357.354" Num="5" zHalfNm="273.602" Error="5.014">
-191.523 -63.851 10.852 0.459 1.652
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.943" Depth="0.123"/>
<TopsideChapman PeakHeight="357.354" PeakDensity="2145440.5" PeakScaleHeight="62.568" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
