<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 18:40:00.000"
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: 50% PACIFIC flags: F2o cusp not found, 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" >
2026.10.23 (296) 18:40:00</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">
FF202629610231840009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.593" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.893" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="405.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="405.000" 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="88" Val="11.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="470.000" 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="2.721" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="352.873" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="249.063" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.316" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="141.398" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.230" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.476" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="158.830" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.580" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="55">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
405.000 405.000 410.000 410.000 411.667 413.333 415.000 415.000 415.000 417.500 420.000 422.500 425.000 425.000 425.000 425.000 425.000 425.000 430.000 435.000 435.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 480.000 485.000 485.000 490.000 495.000 500.000 505.000 510.000 517.500 525.000 530.000 540.000 550.000 560.000 570.000 585.000 605.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 0 0 60 0 0 60 0 72 0 66 0 60 0 69 72 66 0 0 63 63 0 0 0 0 0 0 0 0 0 63 0 0 63 0 0 57 57 63 45 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 -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" >
89.595 90.0 95.0 100.0 105.0 110.0 114.505 115.0 119.009 120.0 123.514 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 352.873 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.828 2.356 2.633 2.721 2.598 2.598 2.598 2.625 2.721 2.778 2.965 3.152 3.343 3.542 3.749 3.967 4.195 4.434 4.683 4.94 5.203 5.471 5.739 6.008 6.275 6.539 6.8 7.056 7.309 7.557 7.801 8.041 8.278 8.511 8.74 8.967 9.19 9.411 9.629 9.844 10.057 10.268 10.475 10.679 10.88 11.076 11.267 11.451 11.627 11.791 11.94 12.071 12.177 12.253 12.294 12.3 12.299 12.289 12.269 12.24 12.201 12.153 12.097 12.033 11.962 11.884 11.799 11.709 11.612 11.511 11.404 11.294 11.179 11.06 10.938 10.813 10.685 10.555 10.423 10.289 10.153 10.015 9.877 9.738 9.598 9.457 9.317 9.176 9.035 8.894 8.753 8.613 8.474 8.335 8.197 8.059 7.923 7.788 7.654 7.521 7.389 7.259 7.13 7.003 6.876 6.752 6.629 6.507 6.387 6.269 6.152 6.037 5.924 5.812 5.702 5.593 5.486 5.381 5.278 5.176 5.076 4.977 4.88 4.785 4.691 4.599 4.509 4.42 4.333 4.247 4.163 4.08 3.999 3.919 3.841 3.764 3.688 3.614 3.542 3.47 3.4 3.332 3.264 3.198 3.134 3.07 3.008 2.947 2.887 2.828 2.771 2.714 2.659 2.604 2.551 2.499 2.448 2.398 2.349 2.301 2.254 2.207 2.162 2.118 2.074 2.032 1.99 1.949 1.909 1.869 1.831 1.793 1.756 1.72 1.685 1.65 1.616 1.583 1.55 1.518 1.487 1.456 1.426 1.396 1.367 1.339

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.721" PeakHeight="110.0" Num="3" Error="0.0">
-29.942 12.335 -2.798
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.721" EndFrequency="12.3" PeakHeight="352.873" Num="5" zHalfNm="249.063" Error="3.15">
-213.128 -28.107 18.598 -9.316 2.594
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.514" Depth="0.123"/>
<TopsideChapman PeakHeight="352.873" PeakDensity="1877047.1" PeakScaleHeight="74.476" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
