<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 12:40:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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) 12:40:00</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">
FF202606203031240009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.560" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.824" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" 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="3.163" 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="4.253" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="355.737" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="250.918" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.232" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="138.319" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.786" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.773" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="166.570" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="149">
<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 11.45 11.5 11.55 11.6 11.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 215.000 215.000 217.000 219.000 221.000 223.000 225.000 230.000 232.500 235.000 237.500 240.000 245.000 250.000 255.000 260.000 265.000 265.000 270.000 275.000 280.000 280.000 280.000 280.000 282.000 284.000 286.000 288.000 290.000 290.000 295.000 295.000 295.000 295.000 297.500 300.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 300.000 300.000 300.000 305.000 306.667 308.333 310.000 311.667 313.333 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 325.000 325.000 326.667 328.333 330.000 335.000 335.000 337.500 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 390.000 390.000 395.000 400.000 400.000 405.000 405.000 405.000 410.000 410.000 415.000 420.000 420.000 420.000 425.000 425.000 427.500 430.000 430.000 430.000 435.000 437.500 440.000 442.500 445.000 445.000 445.000 450.000 455.000 455.000 455.000 460.000 465.000 465.000 465.000 470.000 475.000 475.000 480.000 480.000 485.000 490.000 495.000 495.000 500.000 505.000 509.859 515.175 521.019 527.471 534.632 542.626 551.607 561.770 573.364 586.715 602.256
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 51 51 0 0 0 0 54 57 0 54 0 57 0 48 51 0 51 51 45 0 48 57 57 0 0 0 0 0 60 57 0 0 48 57 0 0 60 60 54 54 0 54 0 54 0 54 63 0 0 0 0 0 57 60 0 66 60 57 60 60 60 60 66 0 0 60 51 54 0 54 60 51 60 0 60 60 60 57 63 54 63 54 57 54 60 57 63 57 60 60 69 63 66 60 51 60 54 60 57 54 57 54 48 57 57 51 57 48 66 48 66 63 48 60 0 51 48 51 0 45 57 60 57 45 54 54 48 45 54 54 57 0 0 48 48 51 48 45 0 45 0 42 0 45 45 0 45 42
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -0.390625 -0.390625 -2.734375 0.390625 2.734375 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 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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 1.953125 -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 2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.953125 -1.171875 -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" >
89.519 90.0 95.0 100.0 105.0 110.0 112.503 115.0 115.007 117.51 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 355.737 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.127 2.738 3.06 3.163 3.041 3.041 3.041 3.163 3.24 3.391 3.54 3.689 3.841 3.996 4.156 4.322 4.494 4.672 4.857 5.048 5.246 5.449 5.656 5.868 6.082 6.298 6.514 6.73 6.946 7.16 7.372 7.583 7.791 7.997 8.201 8.402 8.601 8.799 8.994 9.187 9.379 9.569 9.757 9.944 10.129 10.311 10.492 10.669 10.842 11.009 11.168 11.315 11.444 11.549 11.62 11.649 11.65 11.646 11.633 11.61 11.579 11.538 11.49 11.434 11.371 11.302 11.225 11.143 11.056 10.963 10.865 10.764 10.658 10.548 10.435 10.319 10.2 10.078 9.955 9.829 9.702 9.574 9.444 9.313 9.181 9.049 8.916 8.784 8.651 8.518 8.385 8.252 8.12 7.989 7.858 7.728 7.599 7.47 7.343 7.217 7.092 6.968 6.845 6.724 6.604 6.485 6.368 6.252 6.138 6.025 5.914 5.804 5.696 5.589 5.484 5.38 5.278 5.178 5.079 4.982 4.886 4.792 4.699 4.608 4.518 4.43 4.343 4.258 4.175 4.092 4.012 3.932 3.855 3.778 3.703 3.629 3.557 3.486 3.416 3.348 3.281 3.215 3.15 3.087 3.025 2.964 2.904 2.845 2.787 2.731 2.676 2.621 2.568 2.516 2.465 2.415 2.366 2.317 2.27 2.224 2.178 2.134 2.09 2.048 2.006 1.965 1.925 1.885 1.847 1.809 1.772 1.735 1.7 1.665 1.631 1.597 1.564 1.532 1.501 1.47 1.44 1.41 1.381 1.353 1.325 1.297

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.163" PeakHeight="110.0" Num="3" Error="0.0">
-30.328 12.898 -3.051
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.163" EndFrequency="11.65" PeakHeight="355.737" Num="5" zHalfNm="250.918" Error="5.126">
-204.671 -46.27 18.737 -8.809 2.786
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.51" Depth="0.122"/>
<TopsideChapman PeakHeight="355.737" PeakDensity="1683902.0" PeakScaleHeight="74.773" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
