<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-26 -085 19:50:00.000"
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" >
2026.03.26 (085) 19:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.18" 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">
FF202608503261950009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.464" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.583" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="2.319" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="396.882" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="281.431" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.702" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="159.912" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.603" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.545" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="174.040" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.700" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="165">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 242.500 245.000 247.500 250.000 250.000 250.000 250.000 252.000 254.000 256.000 258.000 260.000 260.000 260.000 261.250 262.500 263.750 265.000 265.000 266.000 267.000 268.000 269.000 270.000 270.000 270.000 270.000 270.000 275.000 275.000 275.000 275.000 280.000 280.000 285.000 285.000 287.500 290.000 290.000 290.000 290.000 290.000 295.000 296.667 298.333 300.000 300.000 300.000 302.143 304.286 306.429 308.571 310.714 312.857 315.000 315.000 315.000 320.000 321.667 323.333 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 375.000 380.000 385.000 385.000 390.000 390.000 390.000 395.000 395.000 400.000 400.000 405.000 405.000 410.000 410.000 410.000 415.000 415.000 420.000 420.000 425.000 425.000 425.000 425.000 425.000 430.000 431.667 433.333 435.000 435.000 440.000 440.000 440.000 445.000 445.000 445.000 450.000 450.000 450.000 455.000 455.000 460.000 460.000 462.500 465.000 465.000 470.000 475.000 475.000 477.500 480.000 485.000 490.000 490.000 490.000 495.000 495.000 505.000 505.000 510.000 515.000 515.000 520.000 525.000 530.000 540.000 545.000 545.000 555.000 565.000 575.000 585.000 595.000 610.000 625.000 650.000 675.000 711.658
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 57 0 57 60 60 60 0 0 57 0 54 57 57 0 0 0 66 66 0 0 0 0 63 63 60 57 57 63 63 0 60 0 0 57 60 0 54 57 0 63 0 63 0 0 66 66 66 0 66 0 60 0 0 60 0 66 57 0 0 57 63 54 0 63 66 66 66 63 66 57 66 69 63 69 60 66 60 66 69 63 66 63 69 60 66 66 69 60 66 60 69 69 66 69 66 69 66 69 63 66 66 66 69 63 66 60 63 69 69 66 69 0 0 69 69 66 69 69 66 69 69 66 69 63 63 63 63 63 57 63 66 63 57 63 54 63 57 48 57 63 60 60 51 57 0 54 54 54 54 51 48 51 51 0 0 0 0 51 42 48 45 42 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</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" >
89.679 90.0 95.0 100.0 105.0 110.0 115.0 116.502 120.0 123.003 125.0 129.505 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 396.882 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.227 1.556 2.008 2.244 2.319 2.244 2.192 2.192 2.192 2.231 2.319 2.331 2.456 2.585 2.72 2.862 3.011 3.167 3.33 3.502 3.682 3.869 4.063 4.264 4.47 4.681 4.895 5.113 5.332 5.553 5.774 5.995 6.215 6.435 6.654 6.871 7.088 7.302 7.515 7.726 7.936 8.143 8.349 8.553 8.755 8.955 9.152 9.347 9.539 9.727 9.913 10.094 10.271 10.442 10.607 10.765 10.914 11.053 11.181 11.295 11.394 11.475 11.537 11.579 11.598 11.6 11.598 11.59 11.574 11.55 11.52 11.484 11.441 11.392 11.337 11.278 11.213 11.143 11.069 10.991 10.908 10.822 10.733 10.64 10.545 10.446 10.346 10.242 10.137 10.03 9.921 9.811 9.7 9.587 9.473 9.358 9.243 9.127 9.01 8.893 8.776 8.659 8.542 8.425 8.308 8.192 8.076 7.96 7.844 7.73 7.616 7.502 7.39 7.278 7.167 7.057 6.948 6.84 6.733 6.627 6.521 6.417 6.315 6.213 6.112 6.013 5.915 5.817 5.722 5.627 5.533 5.441 5.35 5.26 5.172 5.084 4.998 4.913 4.829 4.747 4.665 4.585 4.506 4.428 4.352 4.276 4.202 4.129 4.057 3.986 3.916 3.848 3.78 3.714 3.648 3.584 3.521 3.458 3.397 3.337 3.278 3.219 3.162 3.106 3.05 2.996 2.942 2.89 2.838 2.787 2.737 2.688 2.64 2.592 2.546 2.5 2.455 2.411 2.367 2.325 2.283 2.242 2.201 2.161 2.122 2.084 2.046

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.319" PeakHeight="110.0" Num="3" Error="0.0">
-29.504 11.715 -2.532
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.319" EndFrequency="11.6" PeakHeight="396.882" Num="5" zHalfNm="281.431" Error="3.633">
-250.303 -24.857 13.21 -7.036 1.609
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="19.505" Depth="0.127"/>
<TopsideChapman PeakHeight="396.882" PeakDensity="1669478.9" PeakScaleHeight="84.545" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
