<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 10:40:00.000"
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="1 2 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 0 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.03.08 (067) 10:40:00</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">
FF202606703081040009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="9.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.881" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.379" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="2.200" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="2.660" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="109.299" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="104.047" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="13.777" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.400" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="400.000" 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="2.512" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="315.770" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="231.004" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.823" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="117.243" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="33.323" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="64.517" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="116.460" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.190" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="134">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 235.000 235.000 230.000 230.000 235.000 235.000 235.000 230.000 230.000 232.500 235.000 240.000 240.000 240.000 241.667 243.333 245.000 250.000 250.000 250.000 250.000 251.667 253.333 255.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 265.000 267.500 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 275.000 276.250 277.500 278.750 280.000 280.000 280.000 280.000 280.000 280.000 280.000 285.000 285.000 285.000 286.667 288.333 290.000 291.667 293.333 295.000 296.667 298.333 300.000 300.000 300.000 300.000 300.000 302.500 305.000 305.000 305.000 305.000 307.500 310.000 310.000 315.000 315.000 315.000 315.000 317.500 320.000 322.500 325.000 327.500 330.000 330.000 330.000 332.500 335.000 335.000 335.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 375.000 380.000 385.000 390.000 390.000 400.000 400.000 400.000 405.000 410.000 413.882 418.392 423.693 430.014 437.682 447.177 459.243 475.085 496.805 528.422 578.691
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 54 60 63 57 0 60 63 51 0 48 48 60 57 0 0 54 48 0 66 63 0 0 66 0 0 60 63 63 0 54 0 0 0 0 0 63 66 69 0 69 69 0 63 72 0 0 0 72 75 75 75 72 72 69 72 0 75 0 48 0 0 0 0 0 0 54 60 0 69 75 0 69 75 54 60 0 72 75 66 69 72 69 0 66 0 0 0 45 57 60 48 54 72 72 69 75 66 69 72 69 72 69 78 69 72 72 66 72 69 63 63 69 63 72 63 66 63 60 60 66 66 66 63 60 57 60 63 57 60 48 51 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 -1.953125 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 -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 -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 2.734375 2.734375 -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
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="10">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
109.299 109.991 110.758 111.616 112.592 113.726 115.084 116.789 119.116 122.931
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 57 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 -1.953125 -1.953125 1.953125 -0.390625 2.734375 0.390625 2.734375 -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" >
90.0 95.0 100.0 104.047 105.0 109.567 110.0 115.0 115.087 120.0 120.607 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 315.77 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 2.017 2.54 2.66 2.656 2.528 2.528 2.528 2.528 2.645 2.66 2.753 2.862 2.975 3.093 3.217 3.346 3.484 3.629 3.784 3.949 4.126 4.316 4.519 4.736 4.969 5.216 5.477 5.751 6.034 6.323 6.615 6.907 7.195 7.475 7.747 8.008 8.256 8.49 8.709 8.912 9.098 9.265 9.413 9.541 9.648 9.733 9.795 9.834 9.85 9.85 9.846 9.831 9.805 9.77 9.725 9.672 9.61 9.54 9.464 9.381 9.292 9.197 9.097 8.993 8.885 8.773 8.657 8.539 8.418 8.295 8.17 8.043 7.916 7.787 7.657 7.527 7.397 7.267 7.137 7.007 6.877 6.748 6.62 6.493 6.367 6.242 6.118 5.995 5.874 5.754 5.636 5.519 5.404 5.29 5.178 5.068 4.959 4.852 4.747 4.644 4.542 4.443 4.345 4.249 4.154 4.061 3.971 3.881 3.794 3.708 3.624 3.542 3.461 3.382 3.305 3.229 3.155 3.082 3.011 2.942 2.873 2.807 2.742 2.678 2.616 2.555 2.495 2.437 2.38 2.324 2.269 2.216 2.164 2.113 2.064 2.015 1.967 1.921 1.876 1.831 1.788 1.746 1.705 1.664 1.625 1.586 1.549 1.512 1.476 1.441 1.407 1.373 1.341 1.309 1.278 1.247 1.218 1.189 1.16 1.133 1.106 1.08 1.054 1.029 1.004 0.98 0.957 0.934 0.912 0.89 0.869 0.848 0.828 0.808 0.789 0.77 0.752 0.734 0.716 0.699 0.682 0.666 0.65 0.635 0.619 0.605 0.59

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.66" PeakHeight="104.047" Num="3" Error="4.099">
-20.584 8.438 -1.901
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.66" EndFrequency="9.85" PeakHeight="315.77" Num="5" zHalfNm="231.004" Error="2.59">
-174.131 -14.346 -6.774 -0.806 0.894
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="16.56" Depth="0.132"/>
<TopsideChapman PeakHeight="315.77" PeakDensity="1203753.1" PeakScaleHeight="64.517" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
