<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-12 -071 21:10:00.000"
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" >
2026.03.12 (071) 21:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607103122110009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.493" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.549" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="526.714" 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="1.087" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="403.535" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="321.946" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.369" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="117.834" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="39.067" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="59.409" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="125.500" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.630" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="174">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 280.000 280.000 280.000 280.000 280.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 290.000 291.000 292.000 293.000 294.000 295.000 295.000 290.000 291.875 293.750 295.625 297.500 299.375 301.250 303.125 305.000 305.000 305.000 305.000 305.000 305.000 305.000 310.000 311.111 312.222 313.333 314.444 315.556 316.667 317.778 318.889 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 326.667 328.333 330.000 331.667 333.333 335.000 335.000 335.000 337.500 340.000 340.000 340.000 342.500 345.000 345.000 345.000 345.000 350.000 351.000 352.000 353.000 354.000 355.000 355.000 356.667 358.333 360.000 360.000 365.000 366.667 368.333 370.000 370.000 370.000 370.000 375.000 376.250 377.500 378.750 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 395.000 396.667 398.333 400.000 400.000 400.000 405.000 405.000 410.000 410.000 410.000 412.500 415.000 415.000 415.000 420.000 420.000 425.000 425.000 425.000 430.000 430.000 435.000 435.000 435.000 435.000 435.000 440.000 440.000 440.000 445.000 445.000 450.000 450.000 450.000 455.000 460.000 460.000 460.000 460.000 465.000 470.000 470.000 470.000 475.000 475.000 477.500 480.000 485.000 490.000 490.000 490.000 495.000 495.000 500.000 505.000 505.000 510.000 515.000 515.000 520.000 523.190 526.714 530.628 535.000 539.916 545.484 551.842 559.172 567.716 577.801 589.887 604.635
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 57 57 54 0 54 66 0 60 0 66 0 0 63 69 0 0 0 0 69 69 69 0 0 0 0 0 66 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 63 66 69 57 0 0 66 69 0 0 66 51 0 63 0 69 54 60 0 69 0 63 66 69 72 63 0 69 0 0 66 69 0 0 69 69 63 0 0 63 66 69 69 66 51 0 0 69 72 63 69 69 63 66 0 69 66 0 0 69 72 72 69 72 60 66 69 0 69 72 75 69 72 63 66 69 60 66 54 63 69 72 72 69 72 69 69 72 66 69 69 66 57 63 66 63 66 57 63 66 63 63 0 63 60 51 60 60 60 60 60 54 57 57 54 54 54 0 54 51 51 48 51 51 51 45 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -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 -1.171875 -0.390625 -0.390625 2.734375 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -0.390625 2.734375 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.189 95.0 100.0 105.0 110.0 115.0 120.0 125.0 125.359 130.0 135.0 140.0 140.717 145.0 150.0 155.0 156.076 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 403.535 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.724 0.942 1.052 1.087 1.069 1.012 0.91 0.901 0.901 0.901 0.901 0.901 0.953 1.013 1.074 1.087 1.171 1.271 1.37 1.472 1.577 1.688 1.806 1.932 2.068 2.215 2.374 2.546 2.732 2.931 3.144 3.369 3.605 3.849 4.1 4.356 4.615 4.875 5.137 5.398 5.659 5.919 6.179 6.437 6.695 6.951 7.207 7.461 7.715 7.968 8.22 8.471 8.72 8.968 9.213 9.456 9.694 9.925 10.149 10.36 10.555 10.727 10.871 10.976 11.037 11.05 11.049 11.038 11.011 10.972 10.92 10.856 10.781 10.697 10.602 10.5 10.389 10.271 10.147 10.017 9.882 9.743 9.599 9.452 9.303 9.15 8.996 8.84 8.683 8.525 8.366 8.207 8.049 7.89 7.732 7.575 7.419 7.264 7.111 6.959 6.808 6.66 6.513 6.368 6.225 6.084 5.946 5.809 5.675 5.543 5.413 5.286 5.161 5.038 4.918 4.8 4.684 4.571 4.46 4.351 4.245 4.141 4.039 3.939 3.842 3.747 3.654 3.563 3.474 3.387 3.302 3.219 3.138 3.059 2.982 2.906 2.833 2.761 2.691 2.623 2.556 2.491 2.427 2.366 2.305 2.246 2.189 2.133 2.078 2.025 1.973 1.922 1.873 1.825 1.778 1.732 1.688 1.644 1.602 1.561 1.52 1.481 1.443 1.406 1.369 1.334 1.3 1.266 1.233 1.201 1.17 1.14 1.111 1.082 1.054 1.027 1.0 0.974 0.949 0.924 0.901 0.877 0.854 0.832 0.811 0.79

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.087" PeakHeight="110.0" Num="3" Error="0.0">
-26.871 8.4 -1.34
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.087" EndFrequency="11.05" PeakHeight="403.535" Num="5" zHalfNm="321.946" Error="5.103">
-223.197 -34.553 16.462 -10.42 4.249
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="46.076" Depth="0.186"/>
<TopsideChapman PeakHeight="403.535" PeakDensity="1514919.4" PeakScaleHeight="59.409" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
