<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 17:40:00.000"
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) 17:40:00</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">
FF202606203031740009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="13.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.584" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="34.103" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="455.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.154" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.249" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="381.415" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="289.268" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.301" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="127.130" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="67.281" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.006" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="155.980" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.390" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="170">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 12.5 12.55 12.6 12.65 12.7 12.75 12.8 12.85 12.9 12.95 13.0 13.05 13.1 13.15 13.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 260.000 263.750 267.500 271.250 275.000 280.000 280.000 285.000 290.000 290.000 290.000 293.750 297.500 301.250 305.000 305.000 310.000 312.500 315.000 320.000 320.000 325.000 327.500 330.000 332.500 335.000 336.000 337.000 338.000 339.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 390.000 392.500 395.000 395.000 395.000 395.000 396.667 398.333 400.000 400.000 400.000 400.000 400.000 400.000 405.000 410.000 410.000 410.000 410.000 410.000 410.000 410.000 410.000 410.000 410.000 415.000 415.000 415.000 415.000 415.000 415.000 417.500 420.000 421.667 423.333 425.000 425.000 425.000 426.667 428.333 430.000 431.667 433.333 435.000 436.667 438.333 440.000 440.000 440.000 440.000 440.000 440.000 443.333 446.667 450.000 450.000 450.000 460.000 460.000 465.000 455.000 470.000 470.000 475.000 475.000 480.000 480.000 485.000 490.000 490.000 495.000 500.000 505.000 510.000 515.000 520.000 525.000 535.000 540.000 545.000 560.000 570.000 584.059 600.826 621.166 646.361
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 48 0 51 0 48 51 54 0 48 48 48 0 0 0 54 54 0 0 54 48 0 51 0 0 0 51 0 0 0 0 63 66 63 66 0 63 60 63 63 63 57 60 60 60 63 63 63 63 66 66 66 63 63 63 66 66 66 63 60 66 0 66 66 0 66 0 69 66 63 66 66 66 66 63 63 0 66 66 69 63 0 66 69 66 0 66 69 72 69 0 0 69 72 72 69 66 57 0 54 60 63 63 63 0 0 60 54 51 60 0 57 0 57 45 0 57 0 0 54 57 57 0 0 0 0 0 51 0 0 48 0 57 0 0 57 0 0 54 54 0 45 51 45 0 45 54 48 54 51 54 54 48 54 54 54 54 51 51 51 51 48 51 51 48 57 51 51 45 42
</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" >
89.52 90.0 95.0 100.0 105.0 110.0 112.538 115.0 115.077 117.615 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 381.415 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.121 2.73 3.051 3.154 3.032 3.032 3.032 3.154 3.236 3.395 3.544 3.687 3.827 3.964 4.1 4.237 4.374 4.512 4.652 4.793 4.937 5.084 5.234 5.387 5.544 5.705 5.87 6.04 6.215 6.396 6.582 6.774 6.973 7.179 7.392 7.612 7.84 8.076 8.32 8.572 8.832 9.1 9.374 9.656 9.942 10.232 10.524 10.815 11.103 11.385 11.657 11.916 12.159 12.382 12.583 12.759 12.907 13.027 13.116 13.173 13.199 13.2 13.197 13.182 13.155 13.117 13.068 13.009 12.941 12.863 12.778 12.684 12.584 12.476 12.363 12.243 12.119 11.989 11.855 11.718 11.576 11.432 11.284 11.135 10.983 10.829 10.674 10.518 10.361 10.203 10.044 9.886 9.727 9.568 9.41 9.252 9.095 8.939 8.784 8.629 8.476 8.324 8.174 8.024 7.877 7.731 7.586 7.444 7.303 7.163 7.026 6.89 6.757 6.625 6.495 6.367 6.241 6.117 5.995 5.875 5.757 5.641 5.527 5.414 5.304 5.196 5.089 4.985 4.882 4.781 4.682 4.585 4.49 4.396 4.305 4.215 4.126 4.04 3.955 3.872 3.79 3.71 3.632 3.555 3.48 3.406 3.333 3.263 3.193 3.125 3.058 2.993 2.929 2.867 2.805 2.745 2.686 2.629 2.572 2.517 2.463 2.41 2.358 2.308 2.258 2.209 2.162 2.115 2.07 2.025 1.981 1.938 1.897 1.856 1.815 1.776 1.738 1.7 1.663 1.627 1.592 1.558 1.524 1.491 1.459 1.427

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.154" PeakHeight="110.0" Num="3" Error="0.0">
-30.321 12.887 -3.046
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.154" EndFrequency="13.2" PeakHeight="381.415" Num="5" zHalfNm="289.268" Error="3.526">
-218.413 -51.666 0.91 5.081 0.288
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.615" Depth="0.122"/>
<TopsideChapman PeakHeight="381.415" PeakDensity="2161786.5" PeakScaleHeight="71.006" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
