<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 00:30:00.000"
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: 40% PACIFIC flags: Moderate F-spread, F2o cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match</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) 00:30:00</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">
FF202607303140030009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="9.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.085" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.150" 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="4.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="400.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="358.800" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="339.912" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.284" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="30.659" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="7.600" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.258" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="46.840" 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="132">
<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 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 9.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 350.000 345.000 340.000 335.000 325.000 320.000 321.667 323.333 325.000 323.333 321.667 320.000 320.000 320.000 320.000 320.000 322.000 324.000 326.000 328.000 330.000 331.667 333.333 335.000 342.500 350.000 355.714 361.429 367.143 372.857 378.571 384.286 390.000 387.500 385.000 380.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 377.500 380.000 375.000 370.000 375.000 375.000 380.000 380.000 375.000 377.000 379.000 381.000 383.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 380.000 380.000 377.500 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 380.000 380.000 380.500 381.000 381.500 382.000 382.500 383.000 383.500 384.000 384.500 385.000 387.500 390.000 391.667 393.333 395.000 397.500 400.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 54 57 63 57 0 0 66 57 0 63 0 57 63 63 60 51 0 0 54 0 0 51 57 51 57 60 0 48 0 0 54 0 51 54 54 0 0 0 0 57 0 54 0 0 54 54 0 0 0 57 0 0 0 0 0 0 0 0 0 57 0 60 57 0 57 57 0 60 0 54 57 60 60 63 60 0 57 57 51 51 0 54 48 0 0 0 0 0 0 0 0 0 57 57 57 54 57 57 57 57 60 57 57 0 0 57 54 54 0 51 60 48 54 54 54 57 0 51 51 54 54 54 51 54 0 48 51 0 54
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.953125 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 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -0.390625 -0.390625 -0.390625 1.171875 -0.390625 -1.171875 0.390625 0.390625 -0.390625 1.171875 -1.171875 0.390625 0.390625 0.390625 0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 1.171875 -2.734375 -0.390625 0.390625 -0.390625 -0.390625 -2.734375 -1.171875 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -1.171875 1.171875 1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 1.171875 -2.734375 -0.390625 -1.953125 0.390625 0.390625 -0.390625 -0.390625 -0.390625 -1.953125 -0.390625 0.390625 1.171875 -0.390625 -0.390625 0.390625 -0.390625 -1.953125 -1.171875 -0.390625 0.390625 -0.390625 -1.953125 0.390625 -0.390625 -0.390625 -1.171875 0.390625 -0.390625 -0.390625 -2.734375 -0.390625 0.390625 0.390625 -1.171875 -0.390625 0.390625 0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="98">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.398 150.0 155.0 160.0 165.0 170.0 175.0 180.0 182.796 185.0 190.0 195.0 200.0 205.0 210.0 215.0 219.194 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 358.8 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0
</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 0.292 0.259 0.215 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.209 0.23 0.252 0.273 0.294 0.315 0.336 0.354 0.375 0.522 0.681 0.839 0.999 1.162 1.328 1.501 1.68 1.866 2.062 2.268 2.484 2.713 2.956 3.213 3.488 3.782 4.098 4.438 4.807 5.209 5.651 6.141 6.693 7.323 8.062 8.94 9.45 9.444 9.292 8.976 8.543 8.036 7.487 6.923 6.362 5.817 5.299 4.811 4.357 3.937 3.552 3.201 2.881 2.591 2.329 2.092 1.878 1.685 1.512 1.357 1.217 1.091 0.978 0.877 0.786 0.705 0.632 0.566 0.508 0.455 0.408 0.365 0.328 0.294 0.263 0.236 0.211

</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="9.45" PeakHeight="358.8" Num="5" zHalfNm="339.912" Error="2.871">
-107.143 -54.928 26.309 -3.249 -0.595
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="109.194" Depth="0.154"/>
<TopsideChapman PeakHeight="358.8" PeakDensity="1107971.5" PeakScaleHeight="14.258" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
