<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-05 -064 18:00:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, Trace overlaps while constructing baseline</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) 18:00:00</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">
FF202606403051800009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="12.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.713" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.511" 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="12.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="11.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" 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="3.078" 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="4.212" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="342.819" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.686" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.392" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="99.808" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.752" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="55.108" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="134.000" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.110" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="163">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 226.667 228.333 230.000 240.000 242.500 245.000 250.000 250.000 255.000 260.000 265.000 265.000 270.000 275.000 275.000 275.000 278.333 281.667 285.000 290.000 290.714 291.429 292.143 292.857 293.571 294.286 295.000 295.000 296.429 297.857 299.286 300.714 302.143 303.571 305.000 305.000 305.000 305.000 307.000 309.000 311.000 313.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 330.000 330.000 335.000 335.000 335.000 336.000 337.000 338.000 339.000 340.000 340.000 341.250 342.500 343.750 345.000 345.000 345.000 346.250 347.500 348.750 350.000 350.000 355.000 355.000 355.000 357.500 360.000 360.000 360.000 365.000 365.000 365.000 370.000 372.500 375.000 375.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 385.000 385.714 386.429 387.143 387.857 388.571 389.286 390.000 390.000 395.000 400.000 400.000 400.000 400.000 400.000 400.000 400.000 400.000 400.000 405.000 405.000 405.000 405.000 405.000 410.000 410.000 410.000 410.000 410.000 415.000 420.000 415.000 415.000 417.500 420.000 420.000 420.000 425.000 425.000 425.000 425.000 435.000 430.000 430.000 435.000 440.000 440.000 445.000 447.500 450.000 455.000 460.000 460.000 462.500 465.000 465.000 470.000 475.000 475.000 479.210 484.326 490.679 498.777 509.453 524.174
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 0 48 48 0 51 51 48 0 54 51 51 0 57 57 57 0 0 48 0 0 51 0 0 0 0 48 51 0 0 0 0 0 0 60 60 63 45 0 51 0 0 57 0 0 0 51 63 63 0 63 63 60 63 60 63 48 0 0 0 51 0 0 54 57 0 0 0 60 60 57 0 0 0 57 54 57 63 63 0 0 54 57 57 57 60 63 0 54 60 0 66 66 69 69 72 75 66 0 0 0 0 0 0 63 60 60 45 0 0 54 0 60 0 57 51 51 0 54 48 45 45 0 0 54 54 0 45 60 0 0 57 0 51 57 0 0 48 51 57 0 0 57 54 54 0 57 51 42 57 0 54 51 0 48 48 51 0 51 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</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" >
89.532 90.0 95.0 100.0 105.0 110.0 112.87 115.0 115.741 118.611 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 342.819 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.069 2.664 2.978 3.078 2.956 2.956 2.956 3.078 3.118 3.261 3.403 3.544 3.687 3.831 3.978 4.128 4.281 4.438 4.599 4.765 4.935 5.11 5.29 5.475 5.666 5.861 6.062 6.268 6.48 6.696 6.917 7.143 7.374 7.61 7.85 8.094 8.343 8.595 8.852 9.113 9.377 9.645 9.917 10.191 10.468 10.746 11.025 11.301 11.57 11.824 12.051 12.23 12.334 12.35 12.348 12.33 12.294 12.241 12.171 12.087 11.99 11.88 11.758 11.627 11.486 11.336 11.179 11.016 10.846 10.672 10.494 10.312 10.127 9.939 9.75 9.56 9.369 9.178 8.987 8.796 8.606 8.417 8.229 8.043 7.859 7.677 7.497 7.32 7.144 6.972 6.802 6.635 6.471 6.31 6.151 5.996 5.844 5.695 5.548 5.405 5.265 5.128 4.994 4.863 4.735 4.61 4.488 4.368 4.252 4.138 4.027 3.919 3.814 3.711 3.61 3.513 3.417 3.325 3.234 3.146 3.06 2.976 2.895 2.816 2.738 2.663 2.59 2.519 2.449 2.382 2.316 2.252 2.19 2.129 2.071 2.013 1.957 1.903 1.85 1.799 1.749 1.701 1.653 1.608 1.563 1.519 1.477 1.436 1.396 1.357 1.319 1.283 1.247 1.212 1.179 1.146 1.114 1.083 1.053 1.023 0.995 0.967 0.94 0.914 0.888 0.863 0.839 0.816 0.793 0.771 0.749 0.729 0.708 0.688 0.669 0.651 0.632 0.615 0.598 0.581 0.565 0.549 0.534 0.519 0.504 0.49

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.078" PeakHeight="110.0" Num="3" Error="0.0">
-30.26 12.797 -3.005
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.078" EndFrequency="12.35" PeakHeight="342.819" Num="5" zHalfNm="267.686" Error="2.846">
-172.131 -63.7 13.359 -2.957 1.221
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.611" Depth="0.122"/>
<TopsideChapman PeakHeight="342.819" PeakDensity="1892338.8" PeakScaleHeight="55.108" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
