<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 10:00:00.000"
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: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o 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" >
2026.03.08 (067) 10:00:00</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">
FF202606703081000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.960" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.792" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="406.376" 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="2.105" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="302.419" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="231.697" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.079" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="97.876" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="23.324" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="53.088" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="103.830" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.890" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="118">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.2 3.25 3.3 3.35 3.4 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 247.500 250.000 245.000 245.000 245.000 245.000 250.000 255.000 260.000 250.000 250.000 255.000 250.000 251.667 253.333 255.000 255.000 255.000 255.000 260.000 260.000 260.000 260.000 260.000 265.000 265.000 265.000 267.500 270.000 270.000 270.000 267.500 265.000 265.000 267.500 270.000 270.000 270.714 271.429 272.143 272.857 273.571 274.286 275.000 275.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 285.000 287.500 290.000 285.000 285.000 290.000 295.000 295.000 295.000 295.000 295.000 295.000 297.500 300.000 300.000 300.000 305.000 305.000 307.500 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 320.000 320.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 340.000 340.000 345.000 345.000 345.000 355.000 360.000 365.000 370.000 375.000 380.000 385.000 390.000 387.500 385.000 390.000 395.000 395.000 397.030 399.488 402.526 406.376 411.416 418.296 428.249 443.926 472.261 538.958
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 0 45 60 0 0 51 57 0 0 63 60 60 48 0 0 60 60 0 60 0 63 69 0 69 0 0 72 0 0 0 0 0 63 60 0 72 75 0 0 0 54 0 0 72 72 72 75 72 0 0 63 66 69 0 57 63 66 0 54 63 66 54 75 75 0 72 75 75 69 69 0 60 63 72 75 69 66 75 69 69 72 57 63 0 66 78 72 69 84 81 78 78 78 78 78 69 75 66 72 72 60 63 66 69 66 60 72 69 66 69 63 63 69 0 57 51
</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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 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 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 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" >
89.732 90.0 95.0 100.0 105.0 110.0 115.0 117.635 120.0 125.0 125.269 130.0 132.904 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 302.419 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.223 1.411 1.823 2.037 2.105 2.05 1.975 1.975 1.975 1.975 2.056 2.105 2.181 2.343 2.492 2.639 2.788 2.941 3.101 3.269 3.448 3.64 3.845 4.066 4.303 4.557 4.826 5.108 5.4 5.699 5.999 6.299 6.593 6.881 7.159 7.426 7.681 7.921 8.145 8.351 8.537 8.698 8.833 8.938 9.01 9.046 9.05 9.048 9.033 9.003 8.96 8.905 8.838 8.761 8.674 8.578 8.475 8.365 8.248 8.126 7.999 7.868 7.733 7.595 7.455 7.313 7.17 7.025 6.88 6.734 6.589 6.444 6.299 6.156 6.013 5.872 5.732 5.594 5.457 5.323 5.19 5.06 4.931 4.805 4.682 4.56 4.441 4.324 4.21 4.098 3.988 3.881 3.777 3.674 3.574 3.477 3.381 3.288 3.198 3.109 3.023 2.939 2.857 2.777 2.699 2.624 2.55 2.478 2.408 2.34 2.274 2.209 2.147 2.086 2.026 1.969 1.912 1.858 1.805 1.753 1.703 1.654 1.607 1.561 1.516 1.472 1.43 1.389 1.349 1.31 1.273 1.236 1.2 1.166 1.132 1.099 1.068 1.037 1.007 0.978 0.95 0.922 0.896 0.87 0.845 0.82 0.796 0.773 0.751 0.729 0.708 0.688 0.668 0.648 0.63 0.611 0.594 0.577 0.56 0.544 0.528 0.513 0.498 0.483 0.469 0.456 0.443 0.43 0.417 0.405 0.393 0.382 0.371 0.36 0.35 0.34 0.33 0.32 0.311 0.302 0.293 0.285 0.276 0.268 0.261 0.253 0.246

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.105" PeakHeight="110.0" Num="3" Error="0.0">
-29.222 11.326 -2.372
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.105" EndFrequency="9.05" PeakHeight="302.419" Num="5" zHalfNm="231.697" Error="3.609">
-152.653 -17.29 -0.672 -0.718 1.818
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="22.904" Depth="0.13"/>
<TopsideChapman PeakHeight="302.419" PeakDensity="1016160.06" PeakScaleHeight="53.088" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
