<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-12 -071 16:30:00.000"
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" >
2026.03.12 (071) 16:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607103121630009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.518" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.432" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="9.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" 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="3.334" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.334" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="360.934" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="243.749" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.901" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="151.550" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.883" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="85.591" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="193.780" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.360" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="91">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.000 320.000 320.000 320.000 330.000 330.000 335.000 335.000 335.000 335.000 345.000 345.000 345.000 345.000 350.000 350.000 352.500 355.000 355.000 360.000 360.000 360.000 362.500 365.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 375.000 375.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 395.000 395.000 400.000 400.000 405.000 405.000 410.000 410.000 410.000 415.000 415.000 420.000 420.000 425.000 425.000 430.000 435.000 435.000 435.000 440.000 445.000 450.000 450.000 455.000 455.000 465.000 465.000 470.000 475.000 475.000 485.000 490.000 495.000 495.000 500.000 505.000 510.000 515.000 520.895 527.407 534.639 542.716 551.797 562.081 573.824 587.359 603.132 621.746 644.047
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 51 45 54 0 45 54 48 0 0 48 48 0 54 51 54 54 0 57 57 54 60 60 0 60 63 60 57 0 60 57 51 63 60 63 51 57 60 48 54 63 63 60 63 57 63 54 63 54 60 66 60 66 60 66 63 66 63 57 63 60 63 63 63 60 63 60 57 60 60 60 60 57 54 51 60 60 60 60 60 57 57 57 54 51 51 51 48 48 45 45
</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 -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 1.171875 0.390625 1.171875 1.171875 0.390625 1.171875 1.171875
</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" >
89.492 90.0 95.0 100.0 105.0 110.0 111.78 113.561 115.0 115.341 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 360.934 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.243 2.885 3.225 3.334 3.211 3.211 3.31 3.334 3.502 3.664 3.818 3.966 4.11 4.252 4.393 4.533 4.673 4.814 4.955 5.096 5.239 5.382 5.527 5.672 5.819 5.966 6.115 6.264 6.415 6.566 6.719 6.872 7.026 7.181 7.336 7.491 7.647 7.804 7.96 8.116 8.272 8.427 8.581 8.733 8.884 9.033 9.178 9.318 9.454 9.582 9.701 9.81 9.905 9.984 10.044 10.083 10.1 10.1 10.098 10.089 10.074 10.053 10.027 9.994 9.957 9.914 9.867 9.815 9.759 9.699 9.635 9.568 9.497 9.423 9.346 9.267 9.185 9.1 9.014 8.925 8.835 8.743 8.649 8.555 8.459 8.362 8.264 8.166 8.066 7.967 7.867 7.766 7.666 7.565 7.464 7.363 7.263 7.163 7.063 6.963 6.864 6.765 6.666 6.569 6.472 6.375 6.28 6.185 6.09 5.997 5.904 5.813 5.722 5.632 5.543 5.455 5.368 5.282 5.197 5.113 5.03 4.948 4.867 4.787 4.708 4.63 4.553 4.477 4.402 4.329 4.256 4.184 4.113 4.044 3.975 3.907 3.841 3.775 3.71 3.647 3.584 3.522 3.461 3.401 3.342 3.284 3.227 3.171 3.116 3.062 3.008 2.955 2.904 2.853 2.803 2.753 2.705 2.657 2.611 2.564 2.519 2.475 2.431 2.388 2.345 2.304 2.263 2.223 2.183 2.144 2.106 2.069 2.032 1.996 1.96 1.925 1.891 1.857 1.824 1.791 1.759 1.728 1.697 1.666 1.637 1.607

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.334" PeakHeight="110.0" Num="3" Error="0.0">
-30.461 13.092 -3.139
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.334" EndFrequency="10.1" PeakHeight="360.934" Num="5" zHalfNm="243.749" Error="3.941">
-214.715 -44.736 14.432 -1.372 0.798
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.341" Depth="0.123"/>
<TopsideChapman PeakHeight="360.934" PeakDensity="1265632.8" PeakScaleHeight="85.591" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
