<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 19:40:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, 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) 19:40:00</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">
FF202606203031940009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.477" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.835" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" 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="11.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="535.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.483" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="396.572" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="305.901" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.692" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="123.873" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.138" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="65.268" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="159.740" 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="181">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 235.000 235.000 235.000 237.500 240.000 245.000 245.000 245.000 250.000 250.000 250.000 251.667 253.333 255.000 255.000 255.000 255.000 260.000 262.000 264.000 266.000 268.000 270.000 270.000 270.000 270.000 275.000 275.000 280.000 280.000 280.000 282.500 285.000 285.000 290.000 290.000 295.000 297.500 300.000 300.000 305.000 300.000 305.000 310.000 312.500 315.000 320.000 325.000 325.000 325.000 330.000 330.000 330.000 332.500 335.000 337.500 340.000 345.000 347.500 350.000 350.000 355.000 355.000 360.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 375.000 380.000 380.000 385.000 385.000 385.000 385.000 390.000 390.000 395.000 395.000 400.000 400.000 400.000 405.000 405.000 405.000 407.500 410.000 410.000 415.000 415.000 417.500 420.000 422.500 425.000 425.000 430.000 430.000 430.000 430.000 435.000 435.000 435.000 440.000 440.000 440.000 440.000 445.000 445.000 445.000 445.000 445.000 445.000 445.000 450.000 450.000 455.000 455.000 455.000 455.000 456.250 457.500 458.750 460.000 460.000 460.000 460.000 465.000 467.500 470.000 470.000 470.000 470.000 470.000 475.000 475.000 475.000 480.000 481.000 482.000 483.000 484.000 485.000 485.000 485.000 490.000 495.000 495.000 495.000 500.000 500.000 502.500 505.000 505.000 507.500 510.000 515.000 520.000 520.000 521.667 523.333 525.000 530.000 531.250 532.500 533.750 535.000 539.409 544.154 549.274 554.817 560.837 567.398 574.576 582.464 591.171 600.832
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 51 48 0 54 48 0 54 48 51 48 0 0 60 0 57 57 66 0 0 0 0 60 66 66 66 63 66 63 0 66 0 60 0 60 60 63 0 60 66 63 66 0 63 0 60 57 48 51 51 51 54 54 0 48 0 51 48 0 51 48 48 54 51 0 45 54 57 54 51 51 63 0 57 63 51 0 63 72 69 75 66 66 54 60 66 51 0 57 45 57 63 54 57 0 0 0 57 63 48 0 63 66 66 69 75 72 75 78 78 72 0 78 75 75 66 60 69 66 60 57 57 60 0 0 0 66 63 0 54 57 0 51 0 54 0 48 45 45 45 42 0 0 0 0 51 45 54 54 42 0 57 51 54 0 57 60 0 57 54 48 57 0 0 57 57 0 0 0 0 0 54 57 60 60 60 60 57 0 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 -1.171875 -0.390625 -0.390625 -0.390625 0.390625 2.734375 -0.390625 -0.390625 -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 -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 2.734375 -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 1.171875 -0.390625 -0.390625 2.734375 -0.390625 -0.390625 -1.171875 1.953125 1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -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" >
89.643 90.0 95.0 100.0 105.0 110.0 115.0 115.667 120.0 121.334 125.0 127.001 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 396.572 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.23 1.667 2.15 2.403 2.483 2.386 2.358 2.358 2.358 2.439 2.483 2.543 2.651 2.768 2.897 3.035 3.184 3.343 3.509 3.681 3.859 4.04 4.224 4.409 4.595 4.781 4.968 5.154 5.34 5.526 5.712 5.897 6.083 6.269 6.455 6.642 6.829 7.017 7.206 7.396 7.587 7.779 7.973 8.169 8.366 8.565 8.767 8.971 9.177 9.386 9.598 9.813 10.031 10.252 10.476 10.703 10.933 11.165 11.397 11.627 11.85 12.059 12.241 12.378 12.446 12.45 12.447 12.43 12.401 12.359 12.305 12.241 12.166 12.081 11.988 11.886 11.777 11.661 11.538 11.409 11.276 11.137 10.994 10.847 10.698 10.545 10.39 10.232 10.073 9.913 9.751 9.589 9.427 9.264 9.101 8.938 8.776 8.615 8.454 8.295 8.136 7.979 7.824 7.669 7.517 7.366 7.217 7.07 6.925 6.781 6.64 6.501 6.364 6.229 6.096 5.965 5.837 5.71 5.586 5.464 5.345 5.227 5.112 4.999 4.888 4.779 4.672 4.567 4.465 4.364 4.266 4.169 4.075 3.982 3.891 3.803 3.716 3.631 3.548 3.466 3.386 3.308 3.232 3.158 3.085 3.013 2.944 2.875 2.809 2.743 2.68 2.617 2.556 2.497 2.439 2.382 2.326 2.272 2.219 2.167 2.116 2.067 2.018 1.971 1.925 1.88 1.835 1.792 1.75 1.709 1.669 1.63 1.591 1.554 1.518 1.482 1.447 1.413 1.38 1.347 1.315 1.284 1.254 1.225 1.196 1.167 1.14

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.483" PeakHeight="110.0" Num="3" Error="0.0">
-29.696 11.984 -2.645
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.483" EndFrequency="12.45" PeakHeight="396.572" Num="5" zHalfNm="305.901" Error="3.09">
-218.178 -72.343 29.919 -8.656 -0.313
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="17.001" Depth="0.125"/>
<TopsideChapman PeakHeight="396.572" PeakDensity="1923108.0" PeakScaleHeight="65.268" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
