<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 16:50:00.000"
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="12.0">
<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: 50% PACIFIC flags: F2o cusp not found, F2 cusps do not match</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" >
2026.10.20 (293) 16:50:00</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">
FF202629310201650009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.483" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.985" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="435.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="435.000" 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="7.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.220" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.281" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="354.407" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="218.725" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.727" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="169.603" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="35.942" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="94.624" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="215.460" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="28">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
435.000 435.000 440.000 445.000 450.000 455.000 460.000 465.000 470.000 475.000 485.000 490.000 500.000 505.000 515.000 525.000 535.000 545.000 550.000 560.000 570.000 580.000 590.000 600.000 605.000 610.000 620.000 630.000
</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 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" >
-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 -0.390625 -1.953125 -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" >
89.509 90.0 95.0 100.0 105.0 110.0 112.26 114.52 115.0 116.78 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 354.407 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.166 2.787 3.115 3.22 3.098 3.098 3.124 3.22 3.307 3.438 3.567 3.695 3.825 3.957 4.092 4.23 4.37 4.512 4.655 4.798 4.941 5.083 5.223 5.36 5.495 5.627 5.757 5.883 6.006 6.127 6.245 6.36 6.473 6.584 6.693 6.801 6.906 7.01 7.112 7.213 7.313 7.411 7.509 7.605 7.699 7.793 7.885 7.975 8.063 8.147 8.226 8.299 8.361 8.41 8.441 8.45 8.45 8.447 8.44 8.428 8.413 8.393 8.37 8.343 8.312 8.278 8.241 8.201 8.158 8.112 8.064 8.013 7.96 7.904 7.847 7.788 7.727 7.664 7.6 7.534 7.467 7.398 7.329 7.259 7.187 7.115 7.042 6.969 6.894 6.82 6.745 6.669 6.593 6.517 6.441 6.365 6.289 6.213 6.137 6.06 5.985 5.909 5.833 5.758 5.683 5.609 5.535 5.461 5.388 5.315 5.243 5.171 5.099 5.029 4.959 4.889 4.82 4.752 4.684 4.617 4.55 4.485 4.42 4.355 4.291 4.228 4.166 4.104 4.043 3.983 3.924 3.865 3.807 3.749 3.693 3.637 3.581 3.527 3.473 3.42 3.367 3.315 3.264 3.214 3.164 3.115 3.067 3.019 2.972 2.925 2.88 2.835 2.79 2.746 2.703 2.66 2.619 2.577 2.536 2.496 2.457 2.418 2.379 2.342 2.304 2.268 2.231 2.196 2.161 2.126 2.092 2.059 2.026 1.993 1.961 1.93 1.899 1.868 1.838 1.809 1.78 1.751 1.723 1.695 1.667 1.641

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.22" PeakHeight="110.0" Num="3" Error="0.0">
-30.373 12.963 -3.081
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.22" EndFrequency="8.45" PeakHeight="354.407" Num="5" zHalfNm="218.725" Error="5.601">
-211.443 -42.584 24.056 -10.314 2.658
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.78" Depth="0.122"/>
<TopsideChapman PeakHeight="354.407" PeakDensity="885887.1" PeakScaleHeight="94.624" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
