<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 07:10:00.000"
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 33 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, 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" >
2026.10.14 (287) 07:10:00</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">
FF202628710140710009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="5.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.755" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.982" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="410.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="410.000" 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="5.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="473.624" 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="4.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="387.376" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="331.855" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.046" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="81.700" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="7.390" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="40.877" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="85.920" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.650" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
410.000 415.000 420.000 425.000 430.000 425.000 430.000 432.500 435.000 441.667 448.333 455.000 461.667 468.333 475.000 470.000 475.000 500.000 490.000 470.000 470.000 473.624 509.495
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 75 0 0 69 60 63 69 66 57 60 60 57 0 54 60 0 51 51 57 48 60 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 2.734375 -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="165">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 142.798 145.0 150.0 155.0 160.0 165.0 170.0 175.0 175.596 180.0 185.0 190.0 195.0 200.0 205.0 208.394 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 387.376 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.343 0.328 0.306 0.275 0.232 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.221 0.244 0.268 0.291 0.315 0.338 0.354 0.384 0.461 0.533 0.608 0.689 0.779 0.879 0.99 1.113 1.25 1.398 1.558 1.726 1.901 2.083 2.268 2.457 2.648 2.841 3.036 3.232 3.429 3.628 3.827 4.027 4.227 4.427 4.626 4.822 5.013 5.197 5.37 5.524 5.652 5.745 5.794 5.8 5.798 5.781 5.75 5.704 5.647 5.579 5.5 5.414 5.32 5.219 5.114 5.004 4.89 4.774 4.655 4.535 4.414 4.293 4.172 4.052 3.932 3.814 3.697 3.582 3.469 3.357 3.248 3.142 3.037 2.936 2.837 2.74 2.646 2.554 2.466 2.379 2.296 2.215 2.136 2.06 1.986 1.915 1.846 1.779 1.715 1.653 1.592 1.534 1.478 1.424 1.372 1.321 1.273 1.226 1.181 1.137 1.095 1.054 1.015 0.978 0.941 0.906 0.873 0.84 0.809 0.779 0.75 0.722 0.695 0.669 0.644 0.62 0.597 0.574 0.553 0.532 0.512 0.493 0.475 0.457 0.44 0.423 0.408 0.392 0.378 0.363 0.35 0.337 0.324 0.312 0.3 0.289 0.278 0.268 0.258 0.248 0.239 0.23 0.221 0.213 0.205

</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="5.8" PeakHeight="387.376" Num="5" zHalfNm="331.855" Error="4.252">
-168.363 -20.321 13.128 -6.356 2.93
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="98.394" Depth="0.154"/>
<TopsideChapman PeakHeight="387.376" PeakDensity="417369.72" PeakScaleHeight="40.877" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
