<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 15:40:00.000"
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: Multiple candidates for F2x cusp, 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" >
2026.03.03 (062) 15:40:00</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">
FF202606203031540009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.620" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.128" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="11.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="491.973" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.396" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.363" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="350.243" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.180" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.531" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="115.303" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.971" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="65.650" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="164.770" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.050" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="122">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 305.000 307.500 310.000 312.500 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 330.000 330.000 332.500 335.000 330.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 351.000 352.000 353.000 354.000 355.000 355.000 357.500 360.000 360.000 363.000 366.000 369.000 372.000 375.000 375.000 375.000 375.000 375.000 376.667 378.333 380.000 380.000 385.000 385.000 385.000 387.500 390.000 390.000 395.000 395.000 395.000 397.500 400.000 405.000 405.000 405.000 410.000 410.000 410.000 415.000 415.000 415.000 415.000 420.000 425.000 425.000 425.000 425.000 430.000 430.000 435.000 435.000 435.000 440.000 440.000 440.000 440.000 445.000 447.500 450.000 450.000 452.500 455.000 452.500 450.000 455.000 460.000 465.000 465.000 467.500 470.000 472.500 475.000 475.000 480.000 480.000 482.568 485.391 488.510 491.973 495.840 500.186 505.108 510.726 517.201 524.744 533.642 544.299 557.291
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 48 0 51 0 48 51 57 51 54 54 51 48 57 54 51 54 0 51 51 57 57 54 0 60 57 60 60 60 57 57 60 60 0 51 0 0 54 48 0 57 51 0 0 0 0 48 54 60 63 63 0 0 63 63 66 69 66 0 63 66 60 0 66 0 66 54 0 66 57 60 63 54 60 63 66 63 51 57 60 60 60 63 51 57 57 51 57 0 60 60 45 54 57 48 54 0 60 48 54 48 54 0 48 0 48 51 48 54 51 42 51 48 48 48 48 48 0 0 0 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 -1.953125 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 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 2.734375 0.390625 -1.171875 0.390625 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.953125 -0.390625 -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" >
89.483 90.0 95.0 100.0 105.0 110.0 111.528 113.055 114.583 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 350.243 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.285 2.939 3.285 3.396 3.273 3.273 3.396 3.414 3.61 3.782 3.94 4.092 4.24 4.386 4.53 4.674 4.818 4.963 5.109 5.256 5.406 5.557 5.71 5.865 6.023 6.183 6.346 6.511 6.679 6.85 7.023 7.2 7.379 7.561 7.746 7.934 8.125 8.319 8.515 8.715 8.917 9.123 9.331 9.542 9.755 9.969 10.185 10.401 10.615 10.825 11.024 11.205 11.356 11.46 11.5 11.5 11.494 11.476 11.446 11.405 11.353 11.292 11.221 11.141 11.054 10.959 10.857 10.749 10.635 10.516 10.393 10.265 10.133 9.998 9.86 9.719 9.576 9.431 9.285 9.138 8.989 8.84 8.691 8.541 8.392 8.243 8.094 7.946 7.798 7.652 7.507 7.362 7.219 7.078 6.938 6.799 6.663 6.527 6.394 6.262 6.133 6.005 5.879 5.755 5.633 5.513 5.395 5.279 5.165 5.053 4.943 4.835 4.729 4.625 4.522 4.422 4.324 4.228 4.133 4.041 3.95 3.861 3.774 3.689 3.606 3.524 3.444 3.366 3.289 3.214 3.14 3.069 2.998 2.93 2.862 2.796 2.732 2.669 2.608 2.547 2.489 2.431 2.375 2.32 2.266 2.213 2.162 2.112 2.063 2.015 1.968 1.922 1.877 1.834 1.791 1.749 1.708 1.669 1.63 1.592 1.554 1.518 1.483 1.448 1.414 1.381 1.349 1.317 1.286 1.256 1.227 1.198 1.17 1.143 1.116 1.09 1.064 1.039 1.015 0.991 0.968 0.945 0.923 0.901 0.88 0.859

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.396" PeakHeight="110.0" Num="3" Error="0.0">
-30.504 13.157 -3.17
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.396" EndFrequency="11.5" PeakHeight="350.243" Num="5" zHalfNm="260.18" Error="3.535">
-185.709 -67.957 17.955 -1.111 1.162
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.583" Depth="0.123"/>
<TopsideChapman PeakHeight="350.243" PeakDensity="1640818.9" PeakScaleHeight="65.65" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
