<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 00:50:00.000"
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 33 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% 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</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" >
2026.03.03 (062) 00:50:00</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">
FF202606203030050009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.252" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.804" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="285.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="285.000" 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="0.550" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="356.405" 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="4.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="315.208" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="288.774" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.126" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="39.667" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="7.723" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.431" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="42.690" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.550" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="89">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 300.000 295.000 300.000 295.000 292.500 290.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 290.000 291.667 293.333 295.000 290.000 291.667 293.333 295.000 295.000 295.000 300.000 300.000 295.000 300.000 303.333 306.667 310.000 310.000 310.000 310.000 310.000 310.000 310.000 310.000 315.000 316.667 318.333 320.000 320.000 325.000 325.000 327.500 330.000 330.000 330.000 335.000 336.667 338.333 340.000 342.500 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.833 351.667 352.500 353.333 354.167 355.000 355.000 354.375 353.750 353.125 352.500 351.875 351.250 351.449 351.683 351.962 352.302 352.725 353.264 353.976 354.959 356.405 358.741 363.156 374.649
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 57 63 60 54 60 63 69 63 69 63 63 66 63 63 63 60 66 60 63 0 0 66 66 63 63 63 63 66 0 0 66 69 66 66 0 63 60 63 66 0 0 63 66 63 66 0 66 69 60 69 66 63 66 0 66 60 69 69 60 63 0 69 0 0 0 72 0 66 69 66 66 72 0 66 69 60 63 63 66 63 66 60 60 0 60 60 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 -1.171875 -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 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 1.953125 2.734375 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 0.390625 -0.390625 1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 0.390625 -1.171875 0.390625 -2.734375 -1.953125 -2.734375 -1.171875 -1.171875 -0.390625 -1.953125 -0.390625 -0.390625 -1.171875 -1.953125 -1.171875 -1.171875 -2.734375 -1.171875 1.953125 -0.390625 1.953125 -1.171875 1.953125 1.953125 1.953125 -1.171875 1.953125 -2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="102">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.633 150.0 155.0 160.0 165.0 170.0 175.0 180.0 183.265 185.0 190.0 195.0 200.0 205.0 210.0 215.0 219.898 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 315.208 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0
</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 0.261 0.218 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.207 0.228 0.249 0.27 0.291 0.312 0.333 0.354 0.358 0.538 0.734 0.983 1.299 1.678 2.104 2.56 3.035 3.524 4.026 4.543 5.074 5.622 6.185 6.762 7.342 7.897 8.351 8.55 8.55 8.502 8.361 8.144 7.87 7.553 7.207 6.842 6.468 6.093 5.722 5.36 5.009 4.673 4.352 4.047 3.759 3.489 3.235 2.997 2.776 2.569 2.376 2.198 2.031 1.877 1.735 1.603 1.48 1.367 1.262 1.165 1.076 0.993 0.917 0.846 0.781 0.721 0.665 0.614 0.567 0.523 0.483 0.445 0.411 0.379 0.35 0.323 0.298 0.275 0.254 0.234 0.216

</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="8.55" PeakHeight="315.208" Num="5" zHalfNm="288.774" Error="2.627">
-89.273 -13.335 10.629 -5.005 1.674
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="109.898" Depth="0.154"/>
<TopsideChapman PeakHeight="315.208" PeakDensity="906978.94" PeakScaleHeight="19.431" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
