<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 17:00:00.000"
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="14.0">
<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: F2x cusp not found, Multiple candidates for F2o cusp, 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" >
2026.10.23 (296) 17:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629610231700009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.477" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.854" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="445.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="445.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="3.186" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.264" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="368.549" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="244.649" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.799" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="164.584" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="63.766" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="88.217" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="190.570" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.540" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="46">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 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 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
445.000 445.000 450.000 455.000 455.000 457.500 460.000 460.000 460.000 460.000 465.000 465.000 470.000 475.000 475.000 475.000 475.000 475.000 480.000 480.000 485.000 485.000 490.000 490.000 495.000 495.000 500.000 505.000 510.000 515.000 520.000 525.000 530.000 535.000 540.000 545.000 550.000 560.000 565.000 575.000 580.000 595.000 610.000 625.537 643.581 664.792
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 57 60 42 54 57 63 66 57 54 51 45 51 60 57 60 57 51 51 51 51 0 42 0 0 0 0 0 0 0 0 48 0 0 51 48 0 0 45 45 51 51 51 42
</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 -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 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" >
89.515 90.0 95.0 100.0 105.0 110.0 112.405 114.809 115.0 117.214 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 368.549 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.142 2.757 3.082 3.186 3.064 3.064 3.074 3.186 3.281 3.448 3.617 3.788 3.965 4.147 4.336 4.532 4.735 4.944 5.158 5.375 5.594 5.815 6.034 6.252 6.468 6.68 6.889 7.094 7.296 7.494 7.688 7.879 8.066 8.251 8.432 8.611 8.787 8.961 9.132 9.301 9.469 9.634 9.797 9.958 10.117 10.274 10.428 10.579 10.726 10.87 11.008 11.139 11.262 11.374 11.472 11.551 11.61 11.643 11.65 11.65 11.644 11.631 11.612 11.586 11.554 11.516 11.473 11.424 11.37 11.311 11.248 11.18 11.108 11.032 10.953 10.87 10.784 10.695 10.603 10.509 10.413 10.314 10.213 10.111 10.007 9.901 9.794 9.686 9.577 9.467 9.356 9.245 9.133 9.021 8.909 8.796 8.683 8.57 8.458 8.345 8.233 8.121 8.01 7.899 7.788 7.678 7.569 7.46 7.353 7.245 7.139 7.034 6.929 6.825 6.723 6.621 6.52 6.42 6.321 6.224 6.127 6.031 5.937 5.843 5.751 5.66 5.57 5.481 5.393 5.306 5.221 5.136 5.053 4.97 4.889 4.809 4.73 4.652 4.576 4.5 4.426 4.352 4.28 4.209 4.138 4.069 4.001 3.934 3.868 3.803 3.738 3.675 3.613 3.552 3.492 3.433 3.374 3.317 3.26 3.205 3.15 3.096 3.043 2.991 2.94 2.89 2.84 2.791 2.743 2.696 2.65 2.604 2.559 2.515 2.472 2.429 2.387 2.346 2.305 2.265 2.226 2.187 2.15 2.112 2.076 2.04

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.186" PeakHeight="110.0" Num="3" Error="0.0">
-30.346 12.924 -3.063
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.186" EndFrequency="11.65" PeakHeight="368.549" Num="5" zHalfNm="244.649" Error="3.58">
-231.844 -33.326 21.447 -10.273 2.661
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.214" Depth="0.122"/>
<TopsideChapman PeakHeight="368.549" PeakDensity="1683902.0" PeakScaleHeight="88.217" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
