<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 07:30:00.000"
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 44 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, Unidentified traces above foF2, Trace overlaps while constructing baseline</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" >
2026.03.14 (073) 07:30:00</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">
FF202607303140730009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.953" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.668" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="392.237" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="354.391" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="309.108" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="1.915" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="65.794" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="8.997" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="34.986" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="66.950" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.930" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="92">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 295.000 295.000 305.000 305.000 307.500 310.000 312.500 315.000 330.000 345.000 335.000 330.000 355.000 345.000 335.000 340.000 345.000 350.000 365.000 358.333 351.667 345.000 330.000 325.000 326.000 327.000 328.000 329.000 330.000 331.000 332.000 333.000 334.000 335.000 333.750 332.500 331.250 330.000 332.500 335.000 337.500 340.000 342.500 345.000 355.000 365.000 358.333 351.667 345.000 352.500 315.000 317.500 320.000 320.000 325.000 325.000 325.000 327.500 330.000 330.000 332.500 335.000 340.000 340.000 340.000 342.500 345.000 350.000 350.000 350.000 352.500 355.000 355.000 355.000 355.000 360.000 365.000 371.667 378.333 385.000 387.500 389.635 392.237 395.481 399.635 405.146 412.808 424.187 442.853 479.102 579.905
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 63 60 60 57 0 66 0 57 51 54 60 54 57 0 63 0 0 60 57 0 0 60 0 63 0 0 0 0 48 0 0 0 54 60 0 0 0 57 54 0 0 57 0 57 57 0 0 0 63 0 60 63 66 66 66 54 72 0 60 66 57 66 63 60 60 63 60 0 0 63 0 60 63 0 54 0 54 51 0 57 0 54 54 60 63 57 57 54 0 48 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 -1.171875 -0.390625 -1.171875 0.390625 0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -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 -1.171875 0.390625 -0.390625 -0.390625 -0.390625 -1.171875 0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 1.171875 -1.171875 -0.390625 -1.171875 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -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 -1.171875 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="148">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 143.083 145.0 150.0 155.0 160.0 165.0 170.0 175.0 176.167 180.0 185.0 190.0 195.0 200.0 205.0 209.25 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 354.391 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.343 0.328 0.307 0.277 0.235 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.218 0.241 0.264 0.288 0.311 0.334 0.354 0.361 0.417 0.505 0.633 0.786 0.945 1.107 1.272 1.444 1.624 1.815 2.021 2.245 2.489 2.759 3.058 3.391 3.76 4.164 4.592 5.027 5.445 5.824 6.153 6.425 6.642 6.805 6.918 6.982 7.0 7.0 6.983 6.941 6.877 6.793 6.691 6.574 6.444 6.304 6.154 5.998 5.836 5.67 5.501 5.331 5.16 4.99 4.821 4.653 4.488 4.325 4.165 4.009 3.857 3.709 3.564 3.424 3.288 3.156 3.029 2.906 2.787 2.672 2.562 2.455 2.353 2.254 2.159 2.068 1.981 1.897 1.816 1.739 1.664 1.593 1.525 1.459 1.397 1.336 1.279 1.224 1.171 1.12 1.072 1.025 0.981 0.938 0.897 0.858 0.821 0.785 0.751 0.719 0.687 0.657 0.629 0.601 0.575 0.55 0.526 0.503 0.481 0.46 0.44 0.421 0.403 0.385 0.368 0.352 0.337 0.322 0.308 0.295 0.282 0.269 0.258 0.246 0.236 0.225 0.216 0.206

</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="7.0" PeakHeight="354.391" Num="5" zHalfNm="309.108" Error="6.656">
-141.171 -3.125 -2.557 5.562 -3.85
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="99.25" Depth="0.154"/>
<TopsideChapman PeakHeight="354.391" PeakDensity="607940.44" PeakScaleHeight="34.986" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
