<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 21:00:00.000"
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, Unidentified traces above foF2</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) 21:00:00</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">
FF202606703082100009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.461" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.837" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="270.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="270.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="555.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.340" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="400.421" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="312.603" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.451" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="124.726" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="37.275" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="62.169" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="136.840" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.520" 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" >
2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 270.000 275.000 273.750 272.500 271.250 270.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 276.429 277.857 279.286 280.714 282.143 283.571 285.000 285.000 285.000 287.500 290.000 290.000 291.250 292.500 293.750 295.000 295.000 295.000 295.000 295.000 295.000 300.000 300.000 300.000 301.250 302.500 303.750 305.000 305.000 310.000 311.250 312.500 313.750 315.000 320.000 321.250 322.500 323.750 325.000 325.000 325.000 325.000 325.000 327.500 330.000 330.000 330.000 330.000 330.000 335.000 336.667 338.333 340.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 357.500 360.000 362.500 365.000 365.000 365.000 365.000 365.000 370.000 372.500 375.000 375.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 395.000 395.000 400.000 400.000 400.000 402.500 405.000 410.000 415.000 415.000 417.500 420.000 425.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 440.000 445.000 450.000 450.000 450.000 455.000 460.000 460.000 465.000 465.000 465.000 470.000 470.000 470.000 475.000 475.000 480.000 485.000 485.000 490.000 495.000 495.000 495.000 495.000 495.000 495.000 498.667 502.333 506.000 509.667 513.333 517.000 520.667 524.333 528.000 531.667 535.333 539.000 542.667 546.333 550.000 552.500 555.000 561.511 568.620 576.413 584.993 594.486
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 57 60 0 0 0 57 63 0 60 63 60 57 54 0 0 0 0 0 0 60 60 63 0 51 63 0 0 0 0 0 66 63 0 57 0 72 72 0 0 0 69 63 66 0 0 0 63 54 0 0 48 54 0 0 69 69 0 69 0 69 0 0 69 0 0 69 66 54 60 0 69 66 63 0 0 0 51 57 66 69 66 69 0 63 69 63 69 69 69 72 69 72 69 69 69 66 69 69 0 69 0 63 72 63 69 63 69 72 69 72 66 69 63 69 69 72 63 66 69 66 54 63 54 60 66 63 66 66 66 63 66 60 66 57 51 60 63 63 63 0 63 0 60 0 0 60 63 63 60 60 57 57 54 54 54 54 45 0 48 48 48 45
</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="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.015 95.0 100.0 105.0 110.0 115.0 120.0 122.521 125.0 130.0 135.0 135.041 140.0 145.0 147.562 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 400.421 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.895 1.161 1.297 1.34 1.316 1.243 1.185 1.185 1.185 1.185 1.185 1.246 1.308 1.34 1.388 1.484 1.579 1.676 1.777 1.883 1.995 2.117 2.248 2.391 2.548 2.719 2.905 3.107 3.323 3.549 3.784 4.024 4.265 4.505 4.742 4.976 5.206 5.431 5.653 5.871 6.085 6.297 6.506 6.712 6.916 7.119 7.32 7.52 7.72 7.919 8.117 8.315 8.513 8.711 8.909 9.107 9.305 9.501 9.694 9.883 10.063 10.227 10.365 10.461 10.5 10.5 10.495 10.476 10.446 10.405 10.353 10.291 10.22 10.141 10.053 9.958 9.857 9.749 9.636 9.518 9.396 9.269 9.139 9.006 8.871 8.733 8.593 8.452 8.31 8.166 8.023 7.878 7.734 7.59 7.447 7.303 7.161 7.02 6.879 6.74 6.602 6.466 6.331 6.197 6.065 5.935 5.807 5.681 5.556 5.434 5.313 5.195 5.078 4.964 4.851 4.741 4.632 4.526 4.421 4.319 4.219 4.12 4.024 3.93 3.837 3.747 3.658 3.572 3.487 3.404 3.322 3.243 3.165 3.089 3.015 2.943 2.872 2.802 2.735 2.668 2.604 2.541 2.479 2.419 2.36 2.302 2.246 2.191 2.138 2.085 2.034 1.985 1.936 1.888 1.842 1.797 1.753 1.71 1.668 1.627 1.587 1.548 1.509 1.472 1.436 1.401 1.366 1.332 1.299 1.267 1.236 1.206 1.176 1.147 1.118 1.091 1.064 1.037 1.012 0.987 0.962 0.939 0.915 0.893 0.871 0.849

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.34" PeakHeight="110.0" Num="3" Error="0.0">
-27.71 9.378 -1.653
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.34" EndFrequency="10.5" PeakHeight="400.421" Num="5" zHalfNm="312.603" Error="6.241">
-221.572 -45.941 26.184 -17.277 5.747
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="37.562" Depth="0.155"/>
<TopsideChapman PeakHeight="400.421" PeakDensity="1367866.0" PeakScaleHeight="62.169" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
