<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-07 -066 01:00:00.000"
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 44 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, 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" >
2026.03.07 (066) 01:00:00</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">
FF202606603070100009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.059" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.169" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="380.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="360.681" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="334.648" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.040" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.919" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.870" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.035" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="52.060" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="101">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 340.000 335.000 340.000 345.000 340.000 335.000 335.000 333.333 331.667 330.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 337.500 340.000 345.000 346.146 347.292 348.438 349.583 350.729 351.875 353.021 354.167 355.313 356.458 357.604 358.750 359.896 361.042 362.188 363.333 364.479 365.625 366.771 367.917 369.063 370.208 371.354 372.500 373.646 374.792 375.938 377.083 378.229 379.375 380.521 381.667 382.813 383.958 385.104 386.250 387.396 388.542 389.688 390.833 391.979 393.125 394.271 395.417 396.563 397.708 398.854 400.000 402.500 405.000 400.000 395.000 405.000 402.500 400.000 400.000 400.000 398.333 396.667 395.000 395.000 396.250 397.500 398.750 400.000 405.000 407.500 410.000 412.500 415.000 417.500 420.000 380.000 380.000 385.000 395.000 400.000 400.000 410.000 424.511
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 60 60 57 57 51 60 63 0 0 66 57 54 63 0 0 54 54 0 60 54 0 0 0 48 54 0 54 0 60 51 51 0 0 0 0 51 0 0 0 0 0 0 0 0 0 0 0 54 0 0 0 54 54 51 0 0 0 0 0 0 0 0 0 0 0 0 57 54 0 60 54 51 60 51 54 60 51 0 57 48 51 54 0 51 54 54 0 0 0 0 0 51 54 60 54 51 54 48 51 57
</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 -1.171875 -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 2.734375 -0.390625 -1.171875 -0.390625 2.734375 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 1.953125 1.953125 1.953125 1.953125 1.171875 1.171875 1.171875 1.953125 -0.390625 1.953125 0.390625 -1.171875 1.953125 -0.390625 -1.171875 -1.171875 0.390625 1.953125 1.953125 1.953125 2.734375 -1.953125 -0.390625 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -1.953125 -0.390625 -2.734375 -0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.953125 1.953125 -2.734375 -2.734375 -1.171875 -0.390625 -0.390625 -0.390625 0.390625 -1.171875 0.390625 -1.171875 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="110">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.812 150.0 155.0 160.0 165.0 170.0 175.0 180.0 183.625 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 220.437 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 360.681 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.345 0.333 0.316 0.293 0.262 0.219 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.206 0.227 0.248 0.269 0.289 0.31 0.331 0.352 0.354 0.477 0.608 0.747 0.897 1.058 1.229 1.409 1.598 1.795 2.001 2.214 2.436 2.666 2.905 3.153 3.412 3.681 3.963 4.258 4.568 4.895 5.242 5.613 6.012 6.447 6.926 7.452 7.889 7.9 7.862 7.734 7.533 7.276 6.977 6.65 6.305 5.953 5.599 5.25 4.909 4.58 4.265 3.965 3.681 3.413 3.162 2.927 2.707 2.502 2.312 2.135 1.971 1.819 1.678 1.548 1.427 1.316 1.213 1.118 1.031 0.95 0.875 0.807 0.743 0.685 0.631 0.581 0.536 0.494 0.455 0.419 0.386 0.356 0.328 0.302 0.278 0.256 0.236 0.217 0.2

</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="7.9" PeakHeight="360.681" Num="5" zHalfNm="334.648" Error="2.088">
-114.563 -46.304 26.652 -7.558 1.529
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="110.437" Depth="0.154"/>
<TopsideChapman PeakHeight="360.681" PeakDensity="774317.6" PeakScaleHeight="19.035" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
