<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 13:00:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, 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" >
2026.10.19 (292) 13:00:00</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">
FF202629210191300009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.237" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.145" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="7.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="361.984" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.288" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.313" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="233.853" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="157.572" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.114" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="83.711" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="13.522" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="48.708" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="133.900" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.060" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="21">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 340.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.544 351.159 351.858 352.661 353.592 354.686 355.989 357.566 359.515 361.984 365.215 369.625
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 69 72 72 69 66 66 69 66 60 66 69 63 66 60 72 72 69 72 60
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="161">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.499 90.0 95.0 100.0 105.0 110.0 111.972 113.944 115.0 115.916 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 233.853 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.212 2.846 3.181 3.288 3.166 3.166 3.231 3.288 3.45 3.658 3.881 4.114 4.346 4.569 4.775 4.964 5.139 5.301 5.453 5.597 5.734 5.866 5.994 6.12 6.243 6.367 6.491 6.617 6.749 6.889 7.045 7.15 7.15 7.139 7.115 7.079 7.031 6.972 6.903 6.826 6.741 6.649 6.551 6.447 6.339 6.226 6.11 5.992 5.871 5.748 5.624 5.499 5.374 5.249 5.124 4.999 4.875 4.753 4.631 4.511 4.392 4.275 4.16 4.047 3.935 3.826 3.719 3.614 3.511 3.411 3.313 3.217 3.123 3.031 2.942 2.855 2.77 2.688 2.607 2.529 2.453 2.379 2.307 2.237 2.169 2.103 2.038 1.976 1.915 1.856 1.799 1.744 1.69 1.637 1.587 1.537 1.49 1.443 1.399 1.355 1.313 1.272 1.232 1.194 1.156 1.12 1.085 1.051 1.018 0.986 0.955 0.925 0.896 0.868 0.841 0.814 0.789 0.764 0.74 0.717 0.694 0.672 0.651 0.631 0.611 0.592 0.573 0.555 0.537 0.521 0.504 0.488 0.473 0.458 0.444 0.43 0.416 0.403 0.39 0.378 0.366 0.354 0.343 0.332 0.322 0.312 0.302 0.292 0.283 0.274 0.266 0.257 0.249 0.241 0.234 0.226 0.219 0.212 0.205

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.288" PeakHeight="110.0" Num="3" Error="0.0">
-30.426 13.041 -3.116
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.288" EndFrequency="7.15" PeakHeight="233.853" Num="5" zHalfNm="157.572" Error="3.083">
-93.822 -40.108 23.781 -9.49 1.702
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.916" Depth="0.122"/>
<TopsideChapman PeakHeight="233.853" PeakDensity="634274.2" PeakScaleHeight="48.708" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
