<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 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="15.0">
<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" >
2026.10.14 (287) 22:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202628710142200009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="6.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.758" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.649" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="440.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="440.000" 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="6.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="474.105" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="397.627" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="351.235" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.509" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="70.668" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="7.641" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="33.224" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="82.840" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="41">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
460.000 445.000 442.500 440.000 440.000 440.000 440.000 460.000 450.000 455.000 455.000 460.000 465.000 450.000 450.000 450.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 457.500 460.000 465.000 465.000 465.000 465.172 465.391 465.680 466.079 466.667 467.617 469.414 474.105 517.456
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 66 69 72 0 75 60 69 0 63 0 63 69 72 81 66 0 78 78 81 75 75 84 81 75 72 0 72 0 69 72 81 81 78 81 72 0 0 75 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="150">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 141.855 145.0 150.0 155.0 160.0 165.0 170.0 173.709 175.0 180.0 185.0 190.0 195.0 200.0 205.0 205.564 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 397.627 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0
</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 0.326 0.303 0.27 0.223 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.206 0.23 0.255 0.279 0.303 0.327 0.351 0.354 0.424 0.493 0.563 0.639 0.722 0.816 0.92 1.037 1.165 1.304 1.451 1.604 1.762 1.922 2.083 2.246 2.409 2.573 2.738 2.904 3.07 3.238 3.407 3.579 3.752 3.929 4.108 4.291 4.479 4.671 4.868 5.072 5.283 5.502 5.73 5.963 6.192 6.369 6.4 6.397 6.371 6.32 6.248 6.157 6.05 5.929 5.796 5.654 5.505 5.35 5.19 5.028 4.864 4.699 4.535 4.373 4.212 4.053 3.898 3.745 3.597 3.452 3.311 3.175 3.043 2.915 2.791 2.672 2.557 2.446 2.34 2.238 2.139 2.045 1.955 1.868 1.785 1.705 1.628 1.555 1.485 1.418 1.354 1.293 1.235 1.179 1.125 1.074 1.025 0.978 0.934 0.891 0.851 0.812 0.775 0.739 0.705 0.673 0.642 0.613 0.585 0.558 0.533 0.508 0.485 0.463 0.441 0.421 0.402 0.383 0.366 0.349 0.333 0.318 0.303 0.289 0.276 0.263 0.251 0.24 0.229 0.218 0.208

</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="6.4" PeakHeight="397.627" Num="5" zHalfNm="351.235" Error="5.183">
-164.577 -49.699 32.34 -14.939 4.812
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="95.564" Depth="0.154"/>
<TopsideChapman PeakHeight="397.627" PeakDensity="508188.6" PeakScaleHeight="33.224" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
