<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-27 -086 08:10:00.000"
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" >
2026.03.27 (086) 08:10:00</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">
FF202608603270810009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="29" >
<URSI ID="00" Val="5.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.281" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.898" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.200" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.550" 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="34" Val="120.000" Name="h`Es" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="327.131" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="290.831" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="242.418" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.586" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="1.200" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="68.284" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="4.945" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="36.842" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="55.410" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.530" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="2.100" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="62">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 243.750 242.500 241.250 240.000 245.000 242.500 240.000 245.000 250.000 245.000 240.000 240.000 242.143 244.286 246.429 248.571 250.714 252.857 255.000 255.000 255.000 255.000 255.000 255.000 260.000 260.000 262.500 265.000 265.000 265.000 265.000 270.000 270.000 270.000 270.000 275.000 277.500 280.000 275.000 280.000 285.000 285.000 285.000 290.000 295.000 296.840 298.918 301.282 303.996 307.143 310.838 315.236 320.558 327.131 335.454 346.335 361.163 382.567 416.163 476.521
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 66 0 0 0 72 63 0 75 75 57 0 60 60 0 0 0 0 54 0 57 0 72 69 0 0 60 66 54 63 66 66 72 63 66 69 66 60 0 57 60 72 66 69 69 72 69 72 0 66 0 66 0 66 66 66 66 63 63 63 63 54
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 -1.953125 0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 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 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -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="Es" Polarization="O" Num="21">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.2 1.25 1.3 1.35 1.4 1.45 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85 1.9 1.95 2.0 2.05 2.1 2.15 2.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
130.000 125.000 126.250 127.500 128.750 130.000 131.250 132.500 133.750 135.000 134.000 133.000 132.000 131.000 130.000 130.000 125.000 120.000 120.000 120.000 120.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 0 0 0 0 0 0 0 54 0 0 0 0 57 60 0 57 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -2.734375 0.390625 -2.734375 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 2.734375 -1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 -1.171875 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="133">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.031 145.0 150.0 155.0 160.0 165.0 170.0 170.063 175.0 180.0 185.0 190.0 195.0 200.0 200.094 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 290.831 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.34 0.323 0.296 0.257 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.225 0.251 0.277 0.302 0.328 0.354 0.354 0.478 0.622 0.806 1.063 1.467 2.121 2.856 3.423 3.845 4.17 4.427 4.632 4.796 4.925 5.022 5.091 5.133 5.15 5.15 5.144 5.12 5.082 5.029 4.964 4.888 4.802 4.709 4.609 4.503 4.393 4.28 4.164 4.046 3.927 3.807 3.688 3.57 3.452 3.336 3.222 3.11 3.0 2.892 2.787 2.684 2.585 2.488 2.394 2.302 2.214 2.128 2.045 1.965 1.888 1.814 1.742 1.672 1.606 1.541 1.479 1.42 1.362 1.307 1.254 1.203 1.154 1.107 1.062 1.018 0.977 0.937 0.898 0.861 0.826 0.792 0.759 0.728 0.698 0.669 0.642 0.615 0.59 0.565 0.542 0.519 0.498 0.477 0.458 0.439 0.42 0.403 0.386 0.37 0.355 0.34 0.326 0.313 0.3 0.287 0.275 0.264 0.253 0.242 0.232 0.223 0.214 0.205

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="5.15" PeakHeight="290.831" Num="5" zHalfNm="242.418" Error="1.458">
-111.356 32.982 -16.734 4.552 -0.181
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="90.094" Depth="0.154"/>
<TopsideChapman PeakHeight="290.831" PeakDensity="329063.28" PeakScaleHeight="36.842" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
