<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-12 -071 12:30:00.000"
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" >
2026.03.12 (071) 12:30:00</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">
FF202607103121230009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.405" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.090" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.300" 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="10.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="555.000" 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="3.137" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.241" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="379.137" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.541" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.210" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="155.795" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.743" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.454" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="194.840" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="128">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 230.000 235.000 240.000 245.000 250.000 255.000 260.000 265.000 270.000 275.000 275.000 280.000 285.000 290.000 292.500 295.000 296.667 298.333 300.000 300.000 305.000 305.000 307.500 310.000 310.000 310.000 315.000 316.250 317.500 318.750 320.000 320.000 320.000 322.500 325.000 327.500 330.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 352.500 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 390.000 392.500 395.000 400.000 400.000 410.000 410.000 410.000 415.000 415.000 425.000 425.000 430.000 430.000 435.000 440.000 445.000 450.000 455.000 455.000 460.000 460.000 465.000 470.000 470.000 475.000 477.500 480.000 485.000 485.000 490.000 490.000 495.000 495.000 505.000 505.000 510.000 510.000 515.000 515.000 520.000 525.000 530.000 530.000 535.000 535.000 535.000 545.000 547.500 550.000 555.000 555.000 560.000 564.427 569.521 575.448 582.429 590.773 600.921 613.531 629.621 650.863
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 45 0 0 0 45 45 0 0 48 51 45 48 0 48 0 51 0 0 54 54 51 54 0 48 51 51 54 0 0 0 51 48 48 0 0 0 57 57 57 57 60 60 57 60 60 57 63 63 60 60 54 60 63 57 63 57 60 57 60 54 60 57 60 57 60 60 0 63 60 60 51 63 63 66 69 66 66 66 66 63 63 63 60 57 63 57 66 63 54 60 57 45 60 54 63 57 63 57 60 48 57 54 60 57 57 57 51 48 54 51 54 0 48 45 54 48 48 42 45 0 42 0 45 45 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 -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 -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 -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 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 0.390625 0.390625 -0.390625 -0.390625 -0.390625 -1.171875 1.953125 1.171875 -1.953125
</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" >
89.523 90.0 95.0 100.0 105.0 110.0 112.615 115.0 115.229 117.844 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 379.137 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.109 2.715 3.035 3.137 3.015 3.015 3.015 3.137 3.194 3.325 3.459 3.594 3.734 3.877 4.026 4.179 4.337 4.5 4.667 4.837 5.011 5.187 5.364 5.542 5.72 5.897 6.072 6.246 6.418 6.587 6.755 6.921 7.084 7.245 7.404 7.562 7.717 7.871 8.024 8.175 8.325 8.474 8.622 8.769 8.916 9.062 9.207 9.352 9.496 9.64 9.783 9.925 10.066 10.205 10.34 10.469 10.59 10.697 10.782 10.835 10.85 10.85 10.845 10.833 10.814 10.789 10.757 10.719 10.676 10.627 10.574 10.515 10.452 10.384 10.312 10.237 10.158 10.076 9.99 9.902 9.811 9.717 9.622 9.524 9.425 9.323 9.221 9.117 9.011 8.905 8.798 8.69 8.582 8.473 8.364 8.254 8.145 8.035 7.925 7.816 7.707 7.598 7.489 7.381 7.273 7.166 7.06 6.954 6.849 6.745 6.642 6.539 6.437 6.337 6.237 6.138 6.041 5.944 5.848 5.753 5.66 5.568 5.476 5.386 5.297 5.209 5.122 5.036 4.952 4.868 4.786 4.705 4.625 4.546 4.468 4.392 4.316 4.242 4.169 4.097 4.026 3.956 3.887 3.819 3.752 3.686 3.622 3.558 3.496 3.434 3.373 3.314 3.255 3.197 3.141 3.085 3.03 2.976 2.923 2.871 2.82 2.769 2.72 2.671 2.623 2.576 2.53 2.484 2.44 2.396 2.353 2.31 2.269 2.228 2.187 2.148 2.109 2.071 2.034 1.997 1.961 1.925 1.89 1.856 1.822 1.789

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.137" PeakHeight="110.0" Num="3" Error="0.0">
-30.307 12.867 -3.037
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.137" EndFrequency="10.85" PeakHeight="379.137" Num="5" zHalfNm="258.541" Error="4.457">
-223.676 -56.253 27.82 -11.91 2.726
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.844" Depth="0.122"/>
<TopsideChapman PeakHeight="379.137" PeakDensity="1460576.9" PeakScaleHeight="84.454" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
