<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 20:40:00.000"
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: 90% PACIFIC flags: One of F2 cusps was derived from the other</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) 20:40:00</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">
FF202606203032040009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.486" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.088" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="540.000" 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="1.763" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="398.781" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="311.836" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.580" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="121.444" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.986" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="60.824" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="144.840" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.270" 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" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 260.000 260.000 260.000 260.000 260.000 261.000 262.000 263.000 264.000 265.000 265.000 265.000 265.000 267.500 270.000 270.000 270.000 270.000 275.000 280.000 281.000 282.000 283.000 284.000 285.000 285.000 285.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 295.000 295.000 300.000 305.000 305.000 305.000 310.000 310.000 310.000 315.000 316.250 317.500 318.750 320.000 320.000 322.500 325.000 325.000 325.000 325.000 330.000 330.000 335.000 335.000 340.000 340.000 340.000 342.500 345.000 350.000 351.250 352.500 353.750 355.000 356.250 357.500 358.750 360.000 360.000 365.000 365.000 370.000 372.500 375.000 375.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 392.500 395.000 397.500 400.000 402.500 405.000 405.000 410.000 410.000 410.000 415.000 415.000 420.000 425.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 440.000 445.000 445.000 445.000 450.000 455.000 455.000 455.000 460.000 460.000 460.000 460.000 463.333 466.667 470.000 470.000 470.000 475.000 476.250 477.500 478.750 480.000 481.250 482.500 483.750 485.000 486.250 487.500 488.750 490.000 493.333 496.667 500.000 505.000 507.500 510.000 510.000 510.000 511.667 513.333 515.000 515.000 520.000 521.250 522.500 523.750 525.000 530.000 531.667 533.333 535.000 535.000 537.500 540.000 550.000 553.549 557.558 562.123 567.370 573.462 580.623
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 66 0 0 63 66 0 0 54 0 54 63 66 54 0 63 66 60 48 63 0 0 0 0 0 0 0 0 72 75 75 72 66 0 0 60 0 0 60 0 66 60 66 72 57 0 0 0 66 63 0 60 66 66 66 69 66 63 66 57 54 54 0 60 48 0 0 54 0 48 0 0 69 69 69 72 63 48 60 69 57 63 69 57 63 66 60 0 0 0 0 0 60 66 54 54 66 69 75 69 57 69 75 69 72 63 69 63 72 72 69 72 72 72 63 66 69 63 48 66 66 0 0 60 66 69 63 0 0 0 0 0 0 0 0 0 0 0 63 0 0 69 60 0 51 60 63 0 0 60 60 60 0 0 0 57 57 0 0 57 0 0 0 45 0 0 0 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 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 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 -1.171875 -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 2.734375 -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 2.734375 2.734375 0.390625 1.171875 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" >
89.834 90.0 95.0 100.0 105.0 110.0 115.0 119.57 120.0 125.0 129.141 130.0 135.0 138.711 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 398.781 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.214 1.18 1.527 1.706 1.763 1.726 1.625 1.625 1.625 1.625 1.637 1.709 1.763 1.787 1.883 1.983 2.089 2.202 2.323 2.452 2.591 2.741 2.902 3.074 3.257 3.449 3.651 3.858 4.07 4.285 4.501 4.716 4.93 5.142 5.352 5.559 5.765 5.968 6.169 6.368 6.565 6.761 6.956 7.149 7.342 7.535 7.727 7.92 8.112 8.305 8.499 8.694 8.891 9.089 9.289 9.491 9.696 9.903 10.113 10.325 10.538 10.751 10.955 11.138 11.266 11.3 11.3 11.289 11.264 11.226 11.176 11.114 11.041 10.958 10.866 10.766 10.657 10.542 10.42 10.292 10.159 10.022 9.88 9.734 9.586 9.435 9.282 9.127 8.97 8.813 8.655 8.496 8.338 8.179 8.021 7.864 7.707 7.552 7.397 7.244 7.093 6.943 6.794 6.648 6.503 6.36 6.22 6.081 5.945 5.811 5.679 5.549 5.422 5.296 5.173 5.053 4.935 4.819 4.705 4.593 4.484 4.377 4.272 4.17 4.069 3.971 3.875 3.781 3.689 3.599 3.511 3.426 3.342 3.26 3.179 3.101 3.025 2.95 2.877 2.806 2.736 2.668 2.602 2.537 2.474 2.412 2.352 2.293 2.236 2.18 2.126 2.072 2.021 1.97 1.92 1.872 1.825 1.779 1.735 1.691 1.648 1.607 1.567 1.527 1.489 1.451 1.414 1.379 1.344 1.31 1.277 1.245 1.213 1.183 1.153 1.124 1.095 1.068 1.041 1.014 0.989 0.964 0.939 0.916 0.892 0.87 0.848

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.763" PeakHeight="110.0" Num="3" Error="0.0">
-28.668 10.586 -2.084
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.763" EndFrequency="11.3" PeakHeight="398.781" Num="5" zHalfNm="311.836" Error="3.746">
-215.593 -65.799 35.243 -17.775 3.854
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="28.711" Depth="0.138"/>
<TopsideChapman PeakHeight="398.781" PeakDensity="1584243.1" PeakScaleHeight="60.824" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
