<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 20:40:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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) 20:40:00</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">
FF202629610232040009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.582" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.856" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="455.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="455.000" 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="9.850" 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="1.225" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="372.037" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="286.817" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.316" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="121.820" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="36.188" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="63.010" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="126.160" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.830" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="24">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
9.25 9.3 9.35 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
455.000 455.000 460.000 465.000 465.000 470.000 475.000 477.500 480.000 480.000 485.000 490.000 490.000 495.000 499.692 504.828 510.475 516.712 523.637 531.371 540.065 549.908 561.145 574.094
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 66 57 66 0 57 0 63 63 66 63 66 66 66 60 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 2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -1.171875 -1.171875 -2.734375 1.171875 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.085 95.0 100.0 105.0 110.0 115.0 120.0 123.619 125.0 130.0 135.0 137.239 140.0 145.0 150.0 150.858 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 372.037 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.817 1.061 1.186 1.225 1.204 1.138 1.06 1.06 1.06 1.06 1.06 1.093 1.154 1.215 1.225 1.341 1.476 1.612 1.754 1.903 2.062 2.231 2.412 2.605 2.811 3.03 3.261 3.502 3.752 4.01 4.274 4.543 4.815 5.088 5.362 5.637 5.911 6.184 6.456 6.725 6.993 7.258 7.52 7.779 8.034 8.283 8.527 8.765 8.994 9.215 9.424 9.619 9.8 9.961 10.102 10.218 10.308 10.368 10.397 10.4 10.398 10.384 10.359 10.322 10.276 10.219 10.153 10.079 9.996 9.907 9.811 9.708 9.6 9.487 9.37 9.248 9.123 8.994 8.863 8.73 8.594 8.457 8.319 8.179 8.039 7.898 7.757 7.617 7.476 7.336 7.196 7.057 6.919 6.782 6.646 6.512 6.379 6.247 6.117 5.988 5.862 5.737 5.613 5.492 5.372 5.255 5.139 5.025 4.913 4.803 4.695 4.589 4.485 4.383 4.283 4.185 4.089 3.994 3.902 3.812 3.723 3.636 3.551 3.468 3.386 3.307 3.229 3.152 3.078 3.005 2.933 2.864 2.796 2.729 2.664 2.6 2.538 2.477 2.418 2.359 2.303 2.247 2.193 2.14 2.089 2.038 1.989 1.941 1.894 1.848 1.803 1.76 1.717 1.675 1.635 1.595 1.556 1.519 1.482 1.446 1.41 1.376 1.343 1.31 1.278 1.247 1.217 1.187 1.158 1.13 1.102 1.075 1.049 1.023 0.998 0.974 0.95 0.927 0.904 0.882 0.861 0.84 0.819 0.799 0.78 0.761

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.225" PeakHeight="110.0" Num="3" Error="0.0">
-27.365 8.966 -1.516
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.225" EndFrequency="10.4" PeakHeight="372.037" Num="5" zHalfNm="286.817" Error="3.536">
-213.874 -12.889 8.332 -4.8 2.052
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.858" Depth="0.165"/>
<TopsideChapman PeakHeight="372.037" PeakDensity="1341935.5" PeakScaleHeight="63.01" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
