<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 12:30:00.000"
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="1 2 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 0 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" >
2026.03.14 (073) 12:30:00</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">
FF202607303141230009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="29" >
<URSI ID="00" Val="11.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.868" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.698" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="2.850" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="3.310" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="105.710" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="101.410" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="11.129" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="400.000" 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="3.139" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.242" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="315.800" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="243.737" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.210" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="92.768" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="38.262" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="52.855" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="129.420" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="144">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 230.000 230.000 235.000 237.143 239.286 241.429 243.571 245.714 247.857 250.000 255.000 260.000 260.000 260.000 265.000 267.500 270.000 272.500 275.000 275.000 275.833 276.667 277.500 278.333 279.167 280.000 285.000 285.000 285.000 285.000 285.000 285.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 301.667 303.333 305.000 306.667 308.333 310.000 310.000 310.000 310.000 310.000 312.500 315.000 315.000 320.000 320.000 320.000 320.000 321.667 323.333 325.000 325.000 330.000 335.000 335.000 336.667 338.333 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 347.222 349.444 351.667 353.889 356.111 358.333 360.556 362.778 365.000 365.000 365.000 365.000 367.500 370.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 376.667 378.333 380.000 380.000 380.000 385.000 385.000 385.000 385.000 385.000 395.000 385.000 390.000 390.000 390.000 395.000 395.000 395.000 395.000 400.000 400.000 400.000 405.000 405.000 405.000 410.000 412.500 415.000 415.000 400.000 415.000 430.000 435.000 420.000 430.000 430.000 435.000 440.000 445.000 445.000 450.000 450.000 450.000 454.040 464.593 562.956
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 54 0 0 51 0 0 0 0 48 51 51 54 54 51 0 0 0 48 54 0 0 0 0 0 51 60 45 66 69 69 63 69 66 63 0 51 66 60 63 60 0 0 0 0 0 54 0 57 63 60 0 60 60 60 63 63 66 0 0 69 66 66 51 54 0 0 51 0 60 66 60 60 0 63 57 0 45 0 0 0 54 0 0 51 60 0 72 0 63 72 48 72 66 48 72 75 0 0 75 75 72 69 45 0 66 72 0 63 72 69 66 69 69 72 72 60 57 60 54 51 57 54 0 42 57 42 57 45 45 48 42 51 51 45 48 51 51 51 48 45 54 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 -1.953125 0.390625 0.390625 -1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125 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 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -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 2.734375
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="10">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
105.710 106.388 107.138 107.977 108.931 110.039 111.367 113.037 115.323 119.087
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 0 0 0 0 0 0 51 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 1.953125 2.734375 1.953125 -1.953125 -1.953125 -1.171875 0.390625 0.390625 -0.390625
</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" >
90.0 95.0 100.0 101.41 104.017 105.0 106.623 109.23 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 315.8 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 2.709 3.283 3.31 3.181 3.181 3.181 3.31 3.33 3.462 3.592 3.723 3.855 3.989 4.126 4.266 4.409 4.557 4.709 4.866 5.028 5.195 5.367 5.546 5.73 5.92 6.115 6.317 6.525 6.738 6.956 7.18 7.409 7.642 7.88 8.123 8.369 8.62 8.874 9.131 9.391 9.654 9.919 10.185 10.449 10.707 10.95 11.166 11.326 11.399 11.4 11.393 11.368 11.324 11.264 11.189 11.1 10.998 10.884 10.76 10.626 10.483 10.333 10.176 10.013 9.845 9.673 9.498 9.319 9.139 8.957 8.773 8.589 8.405 8.221 8.038 7.856 7.674 7.495 7.317 7.141 6.967 6.795 6.626 6.46 6.296 6.135 5.977 5.822 5.67 5.52 5.374 5.231 5.091 4.954 4.82 4.689 4.561 4.436 4.314 4.195 4.079 3.966 3.856 3.748 3.643 3.541 3.442 3.345 3.25 3.158 3.069 2.982 2.897 2.815 2.735 2.657 2.581 2.507 2.435 2.365 2.298 2.232 2.168 2.105 2.045 1.986 1.929 1.873 1.819 1.766 1.715 1.666 1.618 1.571 1.525 1.481 1.438 1.397 1.356 1.317 1.279 1.242 1.206 1.171 1.137 1.104 1.072 1.041 1.01 0.981 0.952 0.925 0.898 0.872 0.846 0.822 0.798 0.775 0.752 0.73 0.709 0.688 0.668 0.649 0.63 0.612 0.594 0.577 0.56 0.544 0.528 0.512 0.498 0.483 0.469 0.455 0.442 0.429 0.417 0.405 0.393 0.381 0.37 0.359 0.349 0.339 0.329

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.31" PeakHeight="101.41" Num="3" Error="2.504">
-16.94 7.27 -1.74
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.31" EndFrequency="11.4" PeakHeight="315.8" Num="5" zHalfNm="243.737" Error="2.28">
-153.904 -61.313 10.124 -2.71 1.233
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.82" Depth="0.129"/>
<TopsideChapman PeakHeight="315.8" PeakDensity="1612407.0" PeakScaleHeight="52.855" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
