<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 04:50:00.000"
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 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" >
2026.03.03 (062) 04:50:00</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">
FF202606203030450009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.439" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.548" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="305.000" 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="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="267.928" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="228.854" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.446" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="55.608" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="10.354" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="29.473" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="46.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="121">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.3 2.35 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 235.000 233.333 231.667 230.000 230.000 230.000 230.000 230.000 230.000 225.000 220.000 218.333 216.667 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 220.000 222.500 225.000 227.500 230.000 230.000 227.500 225.000 225.000 225.000 227.500 230.000 225.000 225.000 225.000 230.000 230.000 230.000 225.000 227.500 230.000 230.000 230.000 230.000 230.000 230.000 232.500 235.000 237.500 240.000 242.500 245.000 246.667 248.333 250.000 246.250 242.500 238.750 235.000 235.000 240.000 240.000 240.000 240.000 240.000 241.667 243.333 245.000 245.000 245.000 250.000 250.000 250.000 250.000 255.000 256.667 250.000 252.500 255.000 255.000 256.250 257.500 258.750 260.000 261.667 263.333 265.000 265.000 265.000 270.000 270.000 265.000 267.500 270.000 275.000 275.000 275.000 280.000 280.000 280.000 285.000 285.000 285.000 290.000 290.000 295.000 295.000 300.000 305.000 305.000 310.000 314.103 319.093 325.294 333.206 343.653 358.083 379.312
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 63 0 0 66 0 0 60 69 0 0 0 0 0 81 0 78 0 0 72 0 0 72 75 0 0 0 63 63 0 72 0 66 0 60 54 0 0 0 69 72 75 0 75 72 75 0 0 0 0 72 0 0 0 0 0 0 0 0 0 72 63 60 69 0 0 0 0 0 0 72 0 78 72 57 72 69 60 0 63 51 69 75 0 0 0 66 0 0 69 75 75 63 69 72 0 75 72 72 72 63 75 75 72 72 75 75 69 78 69 72 69 66 72 72 69 69 75 72 60 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 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 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 -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 1.171875 0.390625 1.171875 1.171875 1.171875 1.171875 -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 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="120">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 134.5 135.0 140.0 145.0 150.0 155.0 159.0 160.0 165.0 170.0 175.0 180.0 183.5 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 267.928 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.349 0.333 0.306 0.262 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.206 0.238 0.269 0.301 0.332 0.354 0.388 0.528 0.731 1.043 1.553 2.37 3.414 4.427 5.297 6.024 6.625 7.118 7.516 7.826 8.056 8.209 8.288 8.3 8.296 8.256 8.176 8.062 7.918 7.749 7.56 7.355 7.137 6.909 6.675 6.437 6.197 5.957 5.718 5.482 5.251 5.024 4.802 4.587 4.378 4.176 3.981 3.793 3.612 3.439 3.272 3.113 2.96 2.814 2.675 2.542 2.415 2.294 2.179 2.069 1.964 1.865 1.77 1.68 1.595 1.514 1.436 1.363 1.293 1.227 1.164 1.104 1.048 0.994 0.943 0.894 0.848 0.805 0.763 0.724 0.687 0.651 0.618 0.586 0.556 0.527 0.5 0.474 0.45 0.426 0.404 0.384 0.364 0.345 0.327 0.31 0.294 0.279 0.265 0.251 0.238 0.226 0.214 0.203

</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="8.3" PeakHeight="267.928" Num="5" zHalfNm="228.854" Error="1.685">
-98.337 23.102 -11.042 1.896 -0.047
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="73.5" Depth="0.154"/>
<TopsideChapman PeakHeight="267.928" PeakDensity="854714.6" PeakScaleHeight="29.473" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
