<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-05 -064 01:40:00.000"
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, F2 cusps do not match, Unidentified traces above foF2</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" >
2026.03.05 (064) 01:40:00</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">
FF202606403050140009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.135" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.471" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="0.400" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="366.631" 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="6.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="340.136" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="312.292" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.648" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.471" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="10.360" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.248" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.290" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.980" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="126">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
390.000 383.333 376.667 370.000 360.000 350.000 360.000 355.000 354.375 353.750 353.125 352.500 351.875 351.250 350.625 350.000 349.375 348.750 348.125 347.500 346.875 346.250 345.625 345.000 344.375 343.750 343.125 342.500 341.875 341.250 340.625 340.000 339.375 338.750 338.125 337.500 336.875 336.250 335.625 335.000 334.375 333.750 333.125 332.500 331.875 331.250 330.625 330.000 329.375 328.750 328.125 327.500 326.875 326.250 325.625 325.000 324.375 323.750 323.125 322.500 321.875 321.250 320.625 320.000 320.000 320.000 320.000 315.000 317.500 320.000 320.000 320.000 320.000 315.000 315.000 315.000 315.000 317.500 320.000 325.000 315.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 322.500 325.000 326.667 328.333 330.000 335.000 335.000 345.000 345.000 345.000 347.500 350.000 351.489 353.175 355.101 357.322 359.911 362.967 366.631 371.102 376.681 383.838 393.353 406.620 426.406 459.076
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 57 54 57 60 54 0 0 0 0 0 51 0 0 0 0 0 0 0 57 0 0 51 57 0 54 0 0 0 0 48 0 0 0 51 0 0 0 0 51 0 0 0 57 0 0 0 0 0 48 57 57 0 0 0 57 0 0 69 0 0 63 0 69 63 60 0 69 66 69 69 63 63 69 69 0 69 54 63 69 0 0 0 66 0 63 60 63 75 66 69 69 0 75 72 72 72 72 0 75 0 60 69 66 69 63 63 66 63 69 63 63 57 60 60 57 60 60 54 51 51 48 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.953125 -1.171875 0.390625 -1.171875 -0.390625 -2.734375 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 2.734375 -0.390625 -1.171875 -1.171875 -1.953125 -1.171875 -0.390625 -1.953125 -1.171875 -0.390625 -1.953125 2.734375 -0.390625 -1.171875 -1.171875 -1.953125 1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 1.953125 -1.953125 -1.171875 -0.390625 1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.953125 -2.734375 -2.734375 -1.171875 -1.171875 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 0.390625 -2.734375 -1.953125 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 0.390625 0.390625 -0.390625 1.171875 1.171875 0.390625 -2.734375 1.953125 1.171875 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="116">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 147.247 150.0 155.0 160.0 165.0 170.0 175.0 180.0 184.495 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 221.742 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 340.136 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0
</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 0.334 0.317 0.295 0.264 0.223 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.202 0.223 0.243 0.264 0.285 0.305 0.326 0.347 0.354 0.39 0.487 0.679 0.901 1.104 1.299 1.494 1.695 1.908 2.137 2.388 2.668 2.986 3.358 3.807 4.371 5.116 6.119 7.256 8.162 8.758 9.128 9.333 9.4 9.4 9.358 9.237 9.049 8.807 8.523 8.208 7.871 7.52 7.162 6.801 6.443 6.091 5.748 5.415 5.094 4.787 4.493 4.214 3.949 3.698 3.461 3.237 3.027 2.829 2.643 2.468 2.305 2.152 2.008 1.874 1.749 1.632 1.522 1.42 1.324 1.235 1.152 1.074 1.002 0.934 0.871 0.812 0.757 0.706 0.658 0.613 0.572 0.533 0.497 0.463 0.432 0.403 0.375 0.35 0.326 0.304 0.283 0.264 0.246 0.23 0.214

</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="9.4" PeakHeight="340.136" Num="5" zHalfNm="312.292" Error="8.496">
-105.552 -14.063 -2.697 10.056 -6.138
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="111.742" Depth="0.154"/>
<TopsideChapman PeakHeight="340.136" PeakDensity="1096277.9" PeakScaleHeight="22.248" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
