<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 19:50:00.000"
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 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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) 19:50:00</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">
FF202628710141950009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.401" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.649" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="539.706" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="539.706" 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="10.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="546.626" 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="2.114" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="390.367" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.423" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.471" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="160.325" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.302" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.800" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="169.300" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.850" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
539.706 543.012 546.626 550.597 554.977 559.835 565.000 570.000 580.000 585.000 595.000 605.000 620.000 635.000 650.000 672.402
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
2.734375 1.171875 2.734375 1.171875 -1.171875 -2.734375 -2.734375 1.171875 -1.953125 -1.171875 -0.390625 1.171875 2.734375 1.953125 1.171875 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.729 90.0 95.0 100.0 105.0 110.0 115.0 117.585 120.0 125.0 125.17 130.0 132.755 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 390.367 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.223 1.417 1.831 2.046 2.114 2.058 1.984 1.984 1.984 1.984 2.067 2.114 2.182 2.33 2.477 2.626 2.779 2.937 3.101 3.272 3.45 3.636 3.83 4.031 4.238 4.452 4.671 4.895 5.121 5.35 5.581 5.812 6.042 6.272 6.501 6.728 6.954 7.177 7.397 7.616 7.831 8.043 8.252 8.458 8.661 8.859 9.054 9.244 9.429 9.609 9.784 9.951 10.112 10.264 10.407 10.541 10.663 10.772 10.868 10.948 11.013 11.06 11.089 11.1 11.1 11.097 11.086 11.069 11.045 11.014 10.977 10.935 10.887 10.833 10.775 10.712 10.644 10.572 10.497 10.417 10.334 10.248 10.159 10.067 9.973 9.876 9.777 9.677 9.574 9.47 9.364 9.258 9.15 9.041 8.931 8.821 8.71 8.599 8.488 8.376 8.264 8.152 8.041 7.929 7.818 7.707 7.597 7.487 7.378 7.269 7.161 7.054 6.947 6.842 6.737 6.633 6.53 6.428 6.327 6.227 6.128 6.03 5.933 5.837 5.742 5.648 5.556 5.465 5.374 5.285 5.197 5.111 5.025 4.941 4.857 4.775 4.694 4.614 4.536 4.458 4.382 4.307 4.232 4.159 4.088 4.017 3.947 3.878 3.811 3.744 3.679 3.614 3.551 3.489 3.427 3.367 3.308 3.249 3.192 3.135 3.08 3.025 2.971 2.919 2.867 2.816 2.765 2.716 2.668 2.62 2.573 2.527 2.482 2.437 2.394 2.351 2.308 2.267 2.226 2.186 2.147 2.108 2.07 2.033 1.996 1.96 1.925

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.114" PeakHeight="110.0" Num="3" Error="0.0">
-29.235 11.343 -2.379
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.114" EndFrequency="11.1" PeakHeight="390.367" Num="5" zHalfNm="275.423" Error="3.985">
-250.035 -13.079 8.545 -4.955 1.912
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="22.755" Depth="0.13"/>
<TopsideChapman PeakHeight="390.367" PeakDensity="1528660.0" PeakScaleHeight="84.8" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
