<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 20:00:00.000"
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 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) 20:00:00</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">
FF202606203032000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.449" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.123" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.950" 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="2.295" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="403.477" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="312.671" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.695" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="124.884" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.510" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="64.836" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="159.030" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.140" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="181">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 240.000 240.000 240.000 240.000 240.000 240.000 250.000 250.000 250.000 250.000 250.000 250.000 251.667 253.333 255.000 256.667 258.333 260.000 265.000 267.500 270.000 271.000 272.000 273.000 274.000 275.000 280.000 285.000 285.000 290.000 290.000 290.000 295.000 295.000 297.500 300.000 302.500 305.000 307.500 310.000 312.500 315.000 315.000 315.000 320.000 321.250 322.500 323.750 325.000 325.000 325.000 330.000 335.000 335.000 340.000 340.000 342.000 344.000 346.000 348.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 395.000 400.000 400.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 420.000 425.000 430.000 430.000 430.000 435.000 435.000 440.000 440.000 440.000 445.000 445.000 445.000 447.500 450.000 450.000 450.000 455.000 455.000 455.000 455.000 457.500 460.000 460.000 460.000 460.000 460.000 465.000 465.000 465.000 470.000 470.000 470.000 475.000 475.000 475.000 475.000 475.000 475.000 475.000 475.000 485.000 485.000 487.500 490.000 490.000 490.000 490.000 490.000 495.000 495.000 495.000 497.500 500.000 505.000 505.000 505.000 506.000 507.000 508.000 509.000 510.000 512.500 515.000 520.000 523.333 526.667 530.000 533.333 536.667 540.000 541.667 543.333 545.000 550.000 551.250 552.500 553.750 555.000 561.250 565.793 571.027 577.120 584.304 592.901 603.373
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 0 63 0 0 57 0 0 63 0 63 60 0 0 57 0 0 60 69 0 69 0 63 0 0 57 66 63 66 57 63 63 60 66 0 0 57 0 51 0 0 54 63 66 57 0 0 0 69 72 69 69 60 66 54 60 0 0 0 0 60 66 54 63 69 63 66 69 66 69 63 69 60 66 57 66 54 66 69 63 69 72 66 57 63 69 63 69 60 66 60 69 60 69 75 69 57 66 72 60 66 54 60 69 60 66 72 0 66 72 72 69 69 63 66 0 69 69 66 63 57 63 63 63 63 0 63 0 63 0 0 60 60 54 48 54 57 0 45 54 57 57 57 57 60 54 0 57 48 0 57 0 0 57 0 57 0 0 54 0 0 0 0 0 48 0 0 54 54 0 0 0 48 0 51 0 54 54 42 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 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 -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 -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 -1.171875 -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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 2.734375 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 1.953125 -2.734375
</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" >
89.685 90.0 95.0 100.0 105.0 110.0 115.0 116.63 120.0 123.26 125.0 129.89 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 403.477 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.227 1.54 1.987 2.221 2.295 2.223 2.168 2.168 2.168 2.201 2.295 2.297 2.396 2.503 2.621 2.748 2.885 3.031 3.187 3.351 3.522 3.699 3.88 4.064 4.25 4.438 4.626 4.815 5.003 5.191 5.379 5.566 5.753 5.94 6.127 6.313 6.5 6.686 6.873 7.061 7.249 7.437 7.627 7.817 8.009 8.202 8.396 8.592 8.79 8.99 9.192 9.396 9.603 9.812 10.025 10.24 10.459 10.68 10.905 11.131 11.358 11.583 11.801 12.003 12.17 12.277 12.3 12.299 12.288 12.263 12.226 12.177 12.116 12.045 11.965 11.875 11.776 11.67 11.556 11.436 11.31 11.178 11.041 10.9 10.756 10.607 10.456 10.302 10.146 9.988 9.829 9.669 9.508 9.346 9.184 9.022 8.861 8.699 8.539 8.379 8.22 8.062 7.906 7.751 7.597 7.445 7.295 7.147 7.0 6.855 6.713 6.572 6.433 6.297 6.162 6.03 5.9 5.772 5.646 5.523 5.402 5.283 5.166 5.051 4.938 4.828 4.72 4.613 4.509 4.407 4.307 4.21 4.114 4.02 3.928 3.838 3.75 3.664 3.579 3.497 3.416 3.337 3.259 3.184 3.11 3.038 2.967 2.898 2.83 2.764 2.699 2.636 2.574 2.514 2.455 2.398 2.341 2.286 2.232 2.18 2.129 2.078 2.029 1.982 1.935 1.889 1.845 1.801 1.758 1.717 1.676 1.637 1.598 1.56 1.523 1.487 1.452 1.417 1.384 1.351 1.319 1.288 1.257 1.227 1.198 1.17 1.142

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.295" PeakHeight="110.0" Num="3" Error="0.0">
-29.474 11.674 -2.515
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.295" EndFrequency="12.3" PeakHeight="403.477" Num="5" zHalfNm="312.671" Error="2.428">
-221.986 -74.27 33.404 -11.24 0.505
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="19.89" Depth="0.127"/>
<TopsideChapman PeakHeight="403.477" PeakDensity="1877047.1" PeakScaleHeight="64.836" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
