<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 16:50:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: 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" >
2026.03.02 (061) 16:50:00</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">
FF202606103021650009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.689" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.653" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="185.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="185.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" 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="3.296" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.316" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="340.482" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="259.745" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.029" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="101.943" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.100" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="57.874" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="150.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="143">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
185.000 185.000 185.000 190.000 195.000 200.000 205.000 214.000 223.000 232.000 241.000 250.000 255.000 260.000 265.000 268.235 271.471 274.706 277.941 281.176 284.412 287.647 290.882 294.118 297.353 300.588 303.824 307.059 310.294 313.529 316.765 320.000 320.000 325.000 325.000 325.000 326.667 328.333 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.714 341.429 342.143 342.857 343.571 344.286 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 371.667 373.333 375.000 375.000 375.000 380.000 382.500 385.000 385.000 387.500 390.000 390.000 395.000 395.000 395.000 395.000 395.000 400.000 405.000 405.000 405.000 410.000 410.000 411.667 413.333 415.000 415.000 415.000 415.000 425.000 426.250 427.500 428.750 430.000 430.000 430.000 432.500 435.000 440.000 440.000 440.000 440.000 445.000 450.000 447.500 445.000 450.000 450.000 450.000 450.000 452.500 455.000 460.000 462.222 464.444 466.667 468.889 471.111 473.333 475.556 477.778 480.000 480.000 485.000 490.000 493.575 497.750 502.692 508.632
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 45 45 51 0 0 48 45 48 0 0 51 45 51 45 0 45 0 0 0 45 0 0 0 0 0 0 0 51 0 0 51 48 48 54 60 0 0 54 48 0 45 57 54 0 45 54 0 51 0 0 0 0 57 51 57 60 60 60 51 0 0 60 60 63 63 66 63 69 72 72 63 66 63 0 0 63 69 69 66 0 54 60 45 51 57 48 57 60 63 66 63 51 57 66 54 60 0 0 72 72 63 66 51 0 0 0 60 66 63 0 63 54 60 63 60 60 45 0 57 60 0 57 48 0 51 54 0 51 0 0 60 0 0 0 45 0 0 45 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.953125 -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 -2.734375 1.953125 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 2.734375 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 -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 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 2.734375 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.953125 -1.953125 -1.953125 -0.390625
</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" >
89.498 90.0 95.0 100.0 105.0 110.0 111.939 113.878 115.0 115.817 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 340.482 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.217 2.853 3.189 3.296 3.174 3.174 3.245 3.296 3.417 3.561 3.707 3.853 4.001 4.15 4.301 4.453 4.607 4.762 4.919 5.078 5.238 5.401 5.565 5.731 5.898 6.068 6.239 6.412 6.588 6.765 6.944 7.126 7.31 7.496 7.685 7.877 8.071 8.268 8.469 8.673 8.881 9.092 9.308 9.528 9.753 9.982 10.216 10.454 10.693 10.929 11.147 11.321 11.399 11.4 11.393 11.371 11.334 11.282 11.218 11.142 11.054 10.956 10.849 10.733 10.609 10.478 10.341 10.198 10.051 9.899 9.743 9.584 9.422 9.259 9.093 8.927 8.759 8.591 8.423 8.255 8.087 7.92 7.754 7.59 7.426 7.264 7.104 6.946 6.789 6.635 6.483 6.333 6.185 6.039 5.897 5.756 5.618 5.483 5.35 5.219 5.091 4.966 4.844 4.723 4.606 4.491 4.378 4.268 4.16 4.055 3.952 3.851 3.753 3.657 3.563 3.472 3.382 3.295 3.21 3.127 3.046 2.967 2.89 2.815 2.741 2.67 2.6 2.532 2.466 2.401 2.338 2.277 2.217 2.159 2.102 2.047 1.993 1.941 1.889 1.84 1.791 1.744 1.698 1.653 1.609 1.567 1.525 1.485 1.445 1.407 1.37 1.334 1.298 1.264 1.23 1.198 1.166 1.135 1.105 1.075 1.047 1.019 0.992 0.966 0.94 0.915 0.891 0.867 0.844 0.822 0.8 0.778 0.758 0.738 0.718 0.699 0.68 0.662 0.645 0.627 0.611 0.594 0.579 0.563 0.548 0.534

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.296" PeakHeight="110.0" Num="3" Error="0.0">
-30.432 13.05 -3.12
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.296" EndFrequency="11.4" PeakHeight="340.482" Num="5" zHalfNm="259.745" Error="5.914">
-168.955 -73.257 20.578 -3.536 0.505
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.817" Depth="0.122"/>
<TopsideChapman PeakHeight="340.482" PeakDensity="1612407.0" PeakScaleHeight="57.874" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
