<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 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: 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) 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">
FF202606703082000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.573" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.657" 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="11.250" 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="0.450" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="511.713" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.281" 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="368.302" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="277.089" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.695" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="122.379" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="40.387" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="63.469" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="151.490" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="150">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 235.000 235.000 237.500 240.000 242.500 245.000 240.000 242.500 245.000 250.000 252.143 254.286 256.429 258.571 260.714 262.857 265.000 265.000 266.000 267.000 268.000 269.000 270.000 270.000 273.333 276.667 280.000 275.000 275.000 280.000 285.000 285.000 285.000 290.000 290.000 290.000 295.000 295.000 290.000 295.000 295.000 295.000 300.000 300.000 305.000 307.500 310.000 312.500 315.000 315.000 315.000 315.000 315.000 320.000 325.000 325.000 325.000 327.500 330.000 330.000 335.000 337.500 340.000 340.000 345.000 345.000 345.000 350.000 355.000 355.000 355.000 360.000 360.000 362.500 365.000 365.000 370.000 370.000 375.000 375.000 380.000 382.500 385.000 385.000 390.000 390.000 395.000 395.000 400.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 415.000 420.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 445.000 447.500 450.000 455.000 455.000 455.000 455.000 460.000 462.500 465.000 465.000 465.000 470.000 470.000 472.500 475.000 475.000 477.500 480.000 480.000 485.000 490.000 490.000 490.000 495.000 495.000 500.000 495.000 500.000 501.766 503.763 506.041 508.663 511.713 515.305 519.599 524.821 531.309 539.589 550.519 565.615
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 57 0 51 0 54 54 0 51 60 0 0 0 0 0 0 57 57 0 0 0 0 60 54 0 0 54 63 48 0 57 0 63 57 0 63 51 57 66 63 0 63 66 66 57 48 0 0 51 60 63 69 63 63 54 0 63 0 60 63 63 0 63 66 57 63 66 60 51 60 60 57 63 0 63 66 63 63 60 66 60 0 57 66 60 66 60 66 60 69 63 66 63 69 60 66 69 69 60 69 60 66 60 66 60 66 57 63 66 63 69 60 63 66 63 66 0 60 66 69 60 63 0 60 60 0 60 0 0 48 60 63 54 57 57 57 54 60 57 57 57 0 54 54 54 51 51 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -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 -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 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 -1.171875 -0.390625 -1.171875 -0.390625 -1.171875 2.734375 -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" >
89.688 90.0 95.0 100.0 105.0 110.0 115.0 116.701 120.0 123.401 125.0 130.0 130.102 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 368.302 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.226 1.53 1.975 2.207 2.281 2.211 2.154 2.154 2.154 2.184 2.279 2.281 2.393 2.513 2.639 2.773 2.915 3.067 3.229 3.4 3.581 3.772 3.97 4.173 4.381 4.591 4.801 5.01 5.218 5.424 5.627 5.827 6.025 6.219 6.412 6.602 6.789 6.976 7.16 7.343 7.526 7.707 7.888 8.068 8.249 8.43 8.611 8.794 8.977 9.161 9.347 9.535 9.724 9.914 10.104 10.292 10.47 10.625 10.728 10.75 10.749 10.739 10.716 10.681 10.636 10.581 10.516 10.442 10.36 10.271 10.174 10.071 9.962 9.848 9.729 9.605 9.478 9.348 9.214 9.078 8.94 8.8 8.658 8.515 8.372 8.228 8.083 7.939 7.794 7.65 7.506 7.363 7.221 7.08 6.94 6.802 6.664 6.528 6.394 6.261 6.13 6.001 5.873 5.748 5.624 5.502 5.382 5.264 5.148 5.034 4.922 4.812 4.704 4.598 4.494 4.392 4.292 4.194 4.098 4.003 3.911 3.821 3.732 3.645 3.561 3.478 3.396 3.317 3.239 3.163 3.088 3.015 2.944 2.875 2.806 2.74 2.675 2.611 2.549 2.488 2.429 2.371 2.314 2.259 2.205 2.152 2.101 2.05 2.001 1.953 1.906 1.86 1.815 1.772 1.729 1.687 1.647 1.607 1.568 1.53 1.494 1.457 1.422 1.388 1.354 1.322 1.29 1.258 1.228 1.198 1.169 1.141 1.113 1.086 1.06 1.034 1.009 0.985 0.961 0.938 0.915 0.893 0.871 0.85 0.829 0.809 0.789

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.281" PeakHeight="110.0" Num="3" Error="0.0">
-29.457 11.649 -2.504
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.281" EndFrequency="10.75" PeakHeight="368.302" Num="5" zHalfNm="277.089" Error="2.752">
-197.877 -59.716 30.843 -14.317 2.867
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="20.102" Depth="0.127"/>
<TopsideChapman PeakHeight="368.302" PeakDensity="1433777.9" PeakScaleHeight="63.469" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
