<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 16:10:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, One of F2 cusps was derived from the other</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" >
2026.10.15 (288) 16:10:00</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">
FF202628810151610009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.681" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.266" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="450.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="450.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="490.000" 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="3.321" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.328" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="306.233" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="199.474" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.409" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="130.732" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="31.639" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.962" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="171.800" 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="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
450.000 455.000 455.000 455.000 465.000 470.000 470.000 470.000 475.000 480.000 480.000 485.000 485.000 490.000 490.000 490.000 494.293 499.516 506.004
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 66 72 69 66 60 66 69 66 63 66 63 63 63 57 63 66 63 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
</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" >
89.493 90.0 95.0 100.0 105.0 110.0 111.836 113.673 115.0 115.509 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 306.233 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.234 2.874 3.213 3.321 3.198 3.198 3.287 3.321 3.486 3.655 3.821 3.989 4.163 4.345 4.535 4.732 4.933 5.137 5.338 5.536 5.726 5.91 6.086 6.254 6.416 6.572 6.722 6.867 7.008 7.145 7.279 7.41 7.539 7.666 7.791 7.915 8.039 8.162 8.284 8.407 8.53 8.653 8.775 8.891 8.991 9.047 9.05 9.048 9.037 9.019 8.993 8.96 8.921 8.875 8.823 8.765 8.703 8.635 8.563 8.487 8.406 8.322 8.235 8.145 8.053 7.958 7.86 7.761 7.66 7.558 7.454 7.35 7.244 7.138 7.031 6.924 6.817 6.709 6.602 6.495 6.388 6.282 6.176 6.07 5.965 5.861 5.758 5.656 5.555 5.454 5.355 5.256 5.159 5.063 4.968 4.874 4.782 4.691 4.601 4.512 4.425 4.339 4.254 4.17 4.088 4.007 3.928 3.849 3.772 3.697 3.622 3.549 3.477 3.407 3.338 3.27 3.203 3.137 3.073 3.01 2.948 2.887 2.827 2.769 2.711 2.655 2.6 2.546 2.493 2.441 2.389 2.339 2.29 2.242 2.195 2.149 2.104 2.06 2.016 1.974 1.932 1.891 1.851 1.812 1.774 1.736 1.699 1.663 1.628 1.593 1.56 1.527 1.494 1.462 1.431 1.401 1.371 1.342 1.313 1.285 1.258 1.231 1.205 1.179 1.154 1.129 1.105 1.081 1.058 1.036 1.013 0.992 0.971 0.95 0.93 0.91 0.89 0.871 0.852 0.834 0.816 0.799 0.782 0.765 0.749 0.733

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.321" PeakHeight="110.0" Num="3" Error="0.0">
-30.451 13.077 -3.133
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.321" EndFrequency="9.05" PeakHeight="306.233" Num="5" zHalfNm="199.474" Error="6.442">
-163.455 -45.483 27.82 -13.359 3.753
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.509" Depth="0.123"/>
<TopsideChapman PeakHeight="306.233" PeakDensity="1016160.06" PeakScaleHeight="71.962" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
