<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 13:00:00.000"
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) 13:00:00</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">
FF202606203031300009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.515" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.674" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" 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="3.226" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.283" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="362.517" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="252.034" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.300" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="143.541" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.788" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.903" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="179.450" 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="142">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
220.000 220.000 218.750 217.500 216.250 215.000 215.000 220.000 225.000 230.000 235.000 240.000 245.000 250.000 253.125 256.250 259.375 262.500 265.625 268.750 271.875 275.000 280.000 280.000 281.667 283.333 285.000 286.667 288.333 290.000 290.000 295.000 295.000 295.000 295.000 300.000 300.000 300.000 305.000 305.000 307.500 310.000 310.000 310.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 326.667 328.333 330.000 330.000 335.000 335.000 340.000 341.667 343.333 345.000 345.000 347.500 350.000 350.000 355.000 355.000 355.000 360.000 360.000 365.000 370.000 370.000 372.500 375.000 375.000 380.000 380.000 385.000 385.000 390.000 395.000 395.000 400.000 400.000 405.000 405.000 410.000 415.000 415.000 420.000 420.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 445.000 450.000 450.000 450.000 455.000 455.000 455.000 457.500 460.000 462.500 465.000 465.000 470.000 470.000 475.000 477.500 480.000 480.000 485.000 490.000 490.000 495.000 495.000 500.000 500.000 500.000 510.000 515.000 520.000 520.000 525.000 530.000 535.332 541.233 547.798 555.147 563.430 572.835 583.607 596.069 610.652
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 48 0 0 0 51 57 51 54 0 0 51 48 51 0 0 51 0 48 51 0 48 51 51 0 0 0 54 0 54 48 54 0 0 48 60 57 51 54 57 0 57 57 63 60 63 51 0 60 0 63 63 63 0 0 66 69 66 66 57 0 0 57 63 51 60 63 60 66 69 66 66 63 48 57 0 54 54 60 69 63 66 60 51 63 60 66 63 66 66 60 66 63 69 66 60 69 60 63 60 60 57 42 48 57 51 57 63 57 63 51 60 60 54 57 54 0 51 54 54 45 51 48 51 51 48 0 48 48 48 48 51 51 48 0 0 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 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 -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 -0.390625 -0.390625 -0.390625 -0.390625 -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 -1.171875 -1.171875 -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 -1.171875 -0.390625 -2.734375 2.734375 -1.953125 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" >
89.508 90.0 95.0 100.0 105.0 110.0 112.235 114.469 115.0 116.704 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 362.517 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.17 2.792 3.121 3.226 3.104 3.104 3.133 3.226 3.319 3.462 3.608 3.759 3.914 4.075 4.242 4.414 4.591 4.774 4.96 5.151 5.343 5.538 5.734 5.929 6.124 6.319 6.511 6.703 6.892 7.079 7.265 7.449 7.63 7.81 7.989 8.166 8.341 8.515 8.689 8.861 9.032 9.203 9.372 9.542 9.71 9.879 10.046 10.213 10.378 10.541 10.702 10.858 11.006 11.141 11.258 11.346 11.394 11.4 11.399 11.39 11.372 11.347 11.313 11.272 11.224 11.169 11.107 11.04 10.967 10.889 10.806 10.718 10.626 10.53 10.431 10.328 10.222 10.113 10.002 9.888 9.773 9.655 9.537 9.416 9.295 9.172 9.049 8.925 8.801 8.676 8.551 8.426 8.301 8.177 8.052 7.928 7.805 7.682 7.56 7.439 7.318 7.198 7.08 6.962 6.846 6.73 6.616 6.503 6.391 6.28 6.171 6.063 5.956 5.851 5.747 5.644 5.543 5.443 5.345 5.247 5.152 5.058 4.965 4.874 4.784 4.695 4.608 4.522 4.438 4.354 4.273 4.192 4.113 4.036 3.959 3.884 3.81 3.738 3.667 3.597 3.528 3.46 3.394 3.329 3.265 3.202 3.14 3.08 3.02 2.962 2.904 2.848 2.793 2.738 2.685 2.633 2.582 2.531 2.482 2.434 2.386 2.339 2.294 2.249 2.205 2.162 2.119 2.078 2.037 1.997 1.958 1.919 1.882 1.845 1.808 1.773 1.738 1.704 1.67 1.637 1.605 1.573 1.542 1.512 1.482 1.453

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.226" PeakHeight="110.0" Num="3" Error="0.0">
-30.378 12.97 -3.084
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.226" EndFrequency="11.4" PeakHeight="362.517" Num="5" zHalfNm="252.034" Error="4.488">
-209.643 -52.755 24.475 -9.997 2.107
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.704" Depth="0.122"/>
<TopsideChapman PeakHeight="362.517" PeakDensity="1612407.0" PeakScaleHeight="77.903" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
