<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 07:20:00.000"
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 44 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2, 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) 07:20:00</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">
FF202628710140720009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.847" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.658" 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="5.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="385.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="385.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="387.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<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="368.571" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="312.534" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.118" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="81.434" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.696" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="41.891" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="81.930" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.950" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
385.000 385.000 385.000 385.000 385.000 385.000 387.500 460.000 465.000 460.000 460.464 461.080 461.936 463.207 465.294 469.347 480.630
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 57 69 0 57 54 0 60 63 60 60 0 63 0 0 57 54
</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 -1.953125 -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="162">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 142.22 145.0 150.0 155.0 160.0 165.0 170.0 174.441 175.0 180.0 185.0 190.0 195.0 200.0 205.0 206.661 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 368.571 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0
</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 0.327 0.304 0.272 0.226 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.203 0.227 0.25 0.274 0.298 0.322 0.346 0.354 0.407 0.485 0.566 0.653 0.751 0.859 0.979 1.113 1.262 1.424 1.599 1.787 1.986 2.194 2.409 2.631 2.857 3.086 3.316 3.546 3.775 3.999 4.219 4.431 4.632 4.821 4.993 5.146 5.275 5.378 5.451 5.491 5.5 5.499 5.488 5.462 5.424 5.375 5.315 5.246 5.169 5.085 4.994 4.899 4.799 4.695 4.589 4.48 4.37 4.259 4.147 4.035 3.923 3.811 3.701 3.592 3.484 3.378 3.273 3.171 3.07 2.972 2.875 2.781 2.689 2.6 2.513 2.428 2.346 2.266 2.188 2.113 2.04 1.969 1.9 1.833 1.769 1.707 1.646 1.588 1.532 1.477 1.424 1.374 1.324 1.277 1.231 1.187 1.144 1.103 1.063 1.025 0.988 0.952 0.917 0.884 0.852 0.821 0.791 0.762 0.735 0.708 0.682 0.657 0.633 0.61 0.588 0.567 0.546 0.526 0.507 0.488 0.471 0.453 0.437 0.421 0.405 0.391 0.376 0.363 0.349 0.337 0.324 0.312 0.301 0.29 0.279 0.269 0.259 0.25 0.241 0.232 0.223 0.215 0.207

</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="5.5" PeakHeight="368.571" Num="5" zHalfNm="312.534" Error="4.093">
-159.738 -4.891 3.163 -1.537 1.093
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="96.661" Depth="0.154"/>
<TopsideChapman PeakHeight="368.571" PeakDensity="375310.2" PeakScaleHeight="41.891" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
