<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-05 -064 07:40:00.000"
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 22 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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" >
2026.03.05 (064) 07:40:00</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">
FF202606403050740009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="4.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.235" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.853" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="4.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="352.002" 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="2.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="290.913" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="250.589" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.013" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="57.304" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.705" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="30.012" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="50.170" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.190" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="51">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.4 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 255.000 252.500 250.000 250.000 250.625 251.250 251.875 252.500 253.125 253.750 254.375 255.000 250.000 250.000 253.333 256.667 260.000 255.000 255.000 255.000 255.000 260.000 265.000 270.000 272.500 275.000 280.000 285.000 288.333 291.667 310.000 312.500 315.000 315.000 320.000 320.000 320.000 320.000 320.000 322.202 324.707 327.580 330.910 334.816 339.461 345.077 352.002 360.756 372.175 387.691
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 57 0 0 72 0 66 0 0 57 0 0 72 72 72 0 0 69 72 0 0 72 72 75 60 69 69 60 0 60 60 54 0 54 54 0 0 60 0 66 63 60 60 57 57 63 57 51 0 57 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 -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 1.171875 -0.390625 0.390625 -1.953125 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
</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 142.605 145.0 150.0 155.0 160.0 165.0 170.0 175.0 175.211 180.0 185.0 190.0 195.0 200.0 205.0 207.816 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 290.913 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.342 0.328 0.305 0.274 0.23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.223 0.246 0.27 0.293 0.317 0.341 0.354 0.443 0.577 0.73 0.948 1.32 1.936 2.54 3.023 3.422 3.761 4.052 4.299 4.505 4.669 4.791 4.868 4.899 4.9 4.891 4.859 4.805 4.733 4.644 4.543 4.43 4.309 4.181 4.048 3.912 3.773 3.634 3.495 3.357 3.22 3.086 2.955 2.827 2.702 2.581 2.464 2.351 2.242 2.137 2.036 1.939 1.847 1.758 1.673 1.591 1.514 1.439 1.369 1.301 1.237 1.175 1.117 1.061 1.008 0.958 0.91 0.864 0.821 0.78 0.741 0.703 0.668 0.634 0.602 0.572 0.543 0.516 0.489 0.465 0.441 0.419 0.398 0.378 0.358 0.34 0.323 0.307 0.291 0.276 0.262 0.249 0.236 0.224 0.213 0.202

</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="4.9" PeakHeight="290.913" Num="5" zHalfNm="250.589" Error="4.073">
-95.297 17.757 -7.192 -0.279 1.914
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="97.816" Depth="0.154"/>
<TopsideChapman PeakHeight="290.913" PeakDensity="297890.8" PeakScaleHeight="30.012" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
