<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-02 -033 22:00:00.000"
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 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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" >
2026.02.02 (033) 22:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" 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">
FF202603302022200009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.630" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.411" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="430.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="430.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="496.364" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.417" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="408.921" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="354.012" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.909" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="81.834" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="5.829" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="40.223" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="97.400" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.210" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="42">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
455.000 451.667 448.333 445.000 445.000 445.000 440.000 437.500 435.000 435.000 435.000 430.000 432.500 435.000 445.000 445.000 450.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 450.000 452.500 455.000 430.000 470.000 470.000 460.000 470.000 480.000 482.358 485.492 489.858 496.364 507.091 528.123 588.021
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 66 72 66 51 54 66 0 69 0 51 60 63 60 0 57 60 63 0 60 63 63 0 60 63 0 69 63 60 57 57 57 57 57 60 0 48 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.953125 -1.953125 1.171875 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 0.390625 1.171875 1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="165">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
92.446 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.069 140.0 145.0 150.0 155.0 160.0 165.0 168.139 170.0 175.0 180.0 185.0 190.0 195.0 197.208 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 408.921 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.276 0.361 0.404 0.417 0.412 0.398 0.372 0.332 0.273 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.214 0.251 0.289 0.326 0.363 0.401 0.417 0.44 0.486 0.54 0.603 0.675 0.755 0.842 0.933 1.027 1.124 1.222 1.322 1.423 1.524 1.627 1.731 1.836 1.942 2.049 2.158 2.269 2.381 2.495 2.611 2.73 2.85 2.973 3.099 3.228 3.36 3.495 3.634 3.776 3.923 4.073 4.227 4.384 4.543 4.701 4.853 4.985 5.076 5.1 5.1 5.089 5.064 5.027 4.978 4.92 4.852 4.776 4.693 4.604 4.51 4.412 4.311 4.207 4.101 3.994 3.886 3.778 3.67 3.562 3.456 3.35 3.245 3.143 3.042 2.942 2.845 2.75 2.657 2.567 2.479 2.393 2.309 2.228 2.149 2.073 1.999 1.927 1.857 1.79 1.725 1.662 1.601 1.542 1.485 1.43 1.377 1.326 1.277 1.229 1.183 1.139 1.097 1.056 1.016 0.978 0.941 0.906 0.871 0.839 0.807 0.776 0.747 0.719 0.692 0.665 0.64 0.616 0.593 0.57 0.549 0.528 0.508 0.488 0.47 0.452 0.435 0.418 0.402 0.387 0.372 0.358 0.345 0.331 0.319 0.307 0.295 0.284 0.273 0.263 0.253 0.243 0.234 0.225 0.216 0.208 0.2

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.417" PeakHeight="110.0" Num="3" Error="0.0">
-20.647 3.342 -0.249
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.417" EndFrequency="5.1" PeakHeight="408.921" Num="5" zHalfNm="354.012" Error="4.384">
-179.647 -51.896 28.966 -9.622 0.486
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="87.208" Depth="0.217"/>
<TopsideChapman PeakHeight="408.921" PeakDensity="322704.72" PeakScaleHeight="40.223" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
