<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-05 -064 16:40:00.000"
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" >
2026.03.05 (064) 16:40:00</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">
FF202606403051640009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.844" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.730" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="190.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="190.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="431.952" 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="3.317" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.326" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="311.466" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.355" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.966" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="104.856" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="30.284" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="62.617" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="153.410" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="100">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
190.000 195.000 200.000 210.000 220.000 230.000 240.000 245.000 249.583 254.167 258.750 263.333 267.917 272.500 277.083 281.667 286.250 290.833 295.417 300.000 305.000 308.750 312.500 316.250 320.000 320.000 320.000 322.000 324.000 326.000 328.000 330.000 330.000 332.500 335.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 346.667 348.333 350.000 355.000 360.000 361.364 362.727 364.091 365.455 366.818 368.182 369.545 370.909 372.273 373.636 375.000 375.000 375.000 375.000 375.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 395.000 395.000 395.000 400.000 400.000 400.000 400.000 405.000 410.000 411.671 413.540 415.643 418.030 420.759 423.912 427.594 431.952 437.190 443.606 451.646 462.016 475.900 495.452 525.028
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 51 51 0 51 48 45 48 0 0 0 0 0 0 0 0 48 0 0 45 48 0 48 0 45 0 0 0 0 51 0 51 54 0 51 54 51 57 54 48 54 57 57 48 54 54 54 57 0 0 54 60 48 0 0 0 0 0 0 0 0 0 0 48 54 57 57 51 60 51 54 57 51 57 63 63 57 60 54 51 57 57 54 60 45 48 0 51 0 51 0 0 0 0 0 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 0.390625 0.390625 0.390625 -0.390625 -2.734375 -1.953125 2.734375 -1.953125 0.390625 -1.953125 2.734375 2.734375 0.390625 -1.171875 0.390625 -0.390625 -0.390625 -1.171875 0.390625 -2.734375 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 2.734375 -0.390625 0.390625 0.390625 0.390625 -2.734375 1.953125 -2.734375 0.390625 0.390625 1.953125 -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 -1.953125 2.734375 -2.734375 -1.953125 2.734375 1.953125 -1.953125 2.734375 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" >
89.494 90.0 95.0 100.0 105.0 110.0 111.852 113.703 115.0 115.555 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 311.466 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.231 2.871 3.209 3.317 3.194 3.194 3.28 3.317 3.449 3.605 3.764 3.923 4.08 4.234 4.384 4.531 4.676 4.819 4.961 5.102 5.242 5.383 5.524 5.666 5.81 5.956 6.105 6.256 6.411 6.57 6.734 6.903 7.077 7.258 7.446 7.64 7.841 8.048 8.259 8.47 8.676 8.869 9.041 9.185 9.294 9.366 9.398 9.4 9.397 9.383 9.359 9.325 9.281 9.228 9.167 9.098 9.022 8.939 8.851 8.757 8.658 8.554 8.446 8.335 8.22 8.103 7.983 7.861 7.738 7.613 7.487 7.359 7.232 7.104 6.976 6.848 6.72 6.592 6.465 6.339 6.214 6.09 5.967 5.845 5.724 5.605 5.487 5.371 5.256 5.143 5.031 4.922 4.814 4.707 4.603 4.5 4.399 4.3 4.202 4.107 4.013 3.921 3.83 3.742 3.655 3.57 3.487 3.406 3.326 3.248 3.171 3.096 3.023 2.951 2.881 2.813 2.746 2.68 2.616 2.553 2.492 2.432 2.374 2.317 2.261 2.206 2.153 2.101 2.05 2.0 1.952 1.905 1.858 1.813 1.769 1.726 1.684 1.643 1.603 1.564 1.526 1.488 1.452 1.417 1.382 1.348 1.315 1.283 1.252 1.221 1.191 1.162 1.133 1.106 1.079 1.052 1.026 1.001 0.976 0.953 0.929 0.906 0.884 0.862 0.841 0.82 0.8 0.781 0.761 0.743 0.724 0.707 0.689 0.672 0.656 0.64 0.624 0.609 0.594 0.579 0.565 0.551 0.537 0.524 0.511 0.499

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.317" PeakHeight="110.0" Num="3" Error="0.0">
-30.448 13.073 -3.131
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.317" EndFrequency="9.4" PeakHeight="311.466" Num="5" zHalfNm="227.355" Error="5.115">
-158.701 -47.302 7.95 4.294 -2.152
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.555" Depth="0.123"/>
<TopsideChapman PeakHeight="311.466" PeakDensity="1096277.9" PeakScaleHeight="62.617" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
