<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-17 -076 10:00:00.000"
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" >
2026.03.17 (076) 10:00:00</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">
FF202607603171000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.403" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.567" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.500" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="311.839" 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="2.129" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="258.376" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="210.125" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.079" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="67.688" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="13.450" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="37.819" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="64.440" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.250" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="107">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 237.500 240.000 240.000 240.000 235.000 236.667 238.333 240.000 240.000 240.000 240.000 240.000 240.000 240.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 252.500 255.000 256.250 257.500 258.750 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 265.000 266.667 268.333 270.000 270.000 270.000 270.000 271.250 272.500 273.750 275.000 275.000 280.000 280.000 280.000 285.000 285.000 285.000 287.500 290.000 290.000 293.333 296.667 297.793 299.059 300.490 302.123 304.001 306.187 308.762 311.839 315.581 320.232 326.166 334.001 344.824 360.745 386.480 435.140
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 0 63 60 0 0 0 54 54 60 0 60 60 0 54 54 60 54 0 0 54 54 0 51 54 48 63 0 0 69 66 63 0 0 69 66 66 63 63 60 57 0 54 69 69 66 66 66 63 60 57 66 54 0 72 0 0 0 69 0 72 0 72 69 63 60 66 69 0 0 63 66 0 69 0 63 48 69 69 66 69 75 69 72 69 0 54 66 0 0 54 60 69 66 69 66 63 72 69 72 69 66 72 69 63 60
</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 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 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="141">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.725 90.0 95.0 100.0 105.0 110.0 115.0 117.505 120.0 125.0 125.011 130.0 132.516 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 258.376 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.224 1.428 1.844 2.06 2.129 2.072 1.999 1.999 1.999 1.999 2.085 2.129 2.197 2.33 2.461 2.594 2.733 2.88 3.038 3.209 3.398 3.611 3.852 4.13 4.454 4.831 5.258 5.716 6.171 6.594 6.967 7.286 7.55 7.762 7.921 8.03 8.089 8.1 8.099 8.077 8.03 7.961 7.873 7.767 7.645 7.51 7.364 7.208 7.045 6.875 6.7 6.521 6.34 6.158 5.975 5.793 5.611 5.431 5.254 5.078 4.906 4.737 4.572 4.41 4.252 4.099 3.949 3.804 3.663 3.526 3.393 3.265 3.141 3.02 2.904 2.792 2.684 2.58 2.479 2.382 2.289 2.199 2.112 2.029 1.949 1.871 1.797 1.725 1.657 1.591 1.527 1.466 1.407 1.351 1.297 1.245 1.195 1.147 1.101 1.057 1.014 0.973 0.934 0.896 0.86 0.826 0.792 0.76 0.73 0.7 0.672 0.645 0.619 0.594 0.57 0.547 0.525 0.504 0.483 0.464 0.445 0.427 0.41 0.393 0.377 0.362 0.347 0.333 0.32 0.307 0.294 0.282 0.271 0.26 0.25 0.239 0.23 0.22 0.212 0.203

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.129" PeakHeight="110.0" Num="3" Error="0.0">
-29.256 11.372 -2.391
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.129" EndFrequency="8.1" PeakHeight="258.376" Num="5" zHalfNm="210.125" Error="2.694">
-106.694 -12.285 -9.429 1.447 1.101
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="22.516" Depth="0.13"/>
<TopsideChapman PeakHeight="258.376" PeakDensity="814019.9" PeakScaleHeight="37.819" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
