<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-12 -071 10:50:00.000"
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 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" >
2026.03.12 (071) 10:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607103121050009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.039" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.847" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.650" 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="9.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="380.000" 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="2.599" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="294.870" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="231.248" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.933" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="85.690" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="26.896" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="47.517" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="108.540" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="120">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 246.875 248.750 250.625 252.500 254.375 256.250 258.125 260.000 260.000 265.000 265.000 265.000 265.000 265.000 266.250 267.500 268.750 270.000 270.000 270.000 270.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 276.250 277.500 278.750 280.000 281.250 282.500 283.750 285.000 285.000 285.000 286.667 288.333 290.000 290.000 292.500 295.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 305.000 310.000 310.000 310.000 310.000 310.000 310.000 315.000 317.500 320.000 320.000 320.000 320.000 320.000 320.000 322.500 325.000 325.000 330.000 330.000 330.000 330.000 335.000 336.000 337.000 338.000 339.000 340.000 340.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 360.000 360.000 360.000 362.500 365.000 365.000 370.000 370.000 375.000 375.000 375.000 375.000 375.000 377.500 380.000 380.000 380.000 384.444 388.889 393.333 397.778 404.178 413.019 426.024 447.041 486.771
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 45 0 0 48 0 0 45 0 48 45 45 0 51 51 48 0 0 0 48 51 0 45 45 0 0 0 54 51 51 51 0 0 0 0 0 0 0 60 57 51 0 0 54 51 0 51 54 0 48 45 0 54 57 48 0 0 60 48 51 0 0 60 63 57 0 45 48 57 60 63 60 54 60 63 60 57 60 63 54 0 0 54 0 66 69 63 63 45 0 60 69 60 66 51 60 66 51 63 66 60 63 54 57 0 63 69 72 66 54 0 0 0 51 0 0 0 0 57 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -0.390625 1.953125 -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 2.734375 0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 1.953125 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 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 -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 -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 1.953125 -0.390625 -1.953125 0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="181">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.62 90.0 95.0 100.0 105.0 110.0 115.0 115.09 120.0 120.181 125.0 125.271 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 294.87 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.232 1.745 2.25 2.515 2.599 2.479 2.475 2.475 2.475 2.592 2.599 2.796 2.985 3.166 3.343 3.52 3.699 3.882 4.068 4.26 4.458 4.661 4.872 5.09 5.316 5.549 5.79 6.038 6.295 6.559 6.83 7.107 7.39 7.678 7.969 8.262 8.554 8.843 9.123 9.389 9.633 9.844 10.009 10.115 10.15 10.15 10.139 10.107 10.056 9.988 9.904 9.805 9.693 9.57 9.436 9.292 9.141 8.983 8.819 8.649 8.476 8.3 8.121 7.94 7.758 7.576 7.394 7.212 7.031 6.851 6.673 6.497 6.323 6.152 5.983 5.817 5.653 5.493 5.336 5.182 5.032 4.884 4.741 4.6 4.463 4.329 4.199 4.071 3.948 3.827 3.71 3.596 3.485 3.377 3.272 3.17 3.071 2.975 2.882 2.792 2.704 2.619 2.536 2.456 2.378 2.302 2.229 2.159 2.09 2.023 1.959 1.896 1.836 1.777 1.72 1.665 1.612 1.56 1.51 1.461 1.415 1.369 1.325 1.282 1.241 1.201 1.163 1.125 1.089 1.054 1.02 0.987 0.955 0.924 0.895 0.866 0.838 0.811 0.785 0.759 0.735 0.711 0.688 0.666 0.644 0.624 0.603 0.584 0.565 0.547 0.529 0.512 0.495 0.479 0.464 0.449 0.434 0.42 0.407 0.394 0.381 0.369 0.357 0.345 0.334 0.323 0.313 0.303 0.293 0.283 0.274 0.265 0.257 0.248 0.24 0.233 0.225 0.218 0.211 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.599" PeakHeight="110.0" Num="3" Error="0.0">
-29.819 12.16 -2.721
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.599" EndFrequency="10.15" PeakHeight="294.87" Num="5" zHalfNm="231.248" Error="2.311">
-140.491 -36.966 7.033 0.147 0.678
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="15.271" Depth="0.124"/>
<TopsideChapman PeakHeight="294.87" PeakDensity="1278194.8" PeakScaleHeight="47.517" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
