<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 13:40:00.000"
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: F2o cusp not found, Multiple candidates for F2x cusp, 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) 13:40:00</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">
FF202629610231340009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.486" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.731" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="9.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="511.645" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.355" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.344" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="364.663" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="237.896" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.318" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="164.304" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.632" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="92.142" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="204.150" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.450" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="78">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 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 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 385.000 385.000 390.000 390.000 395.000 395.000 395.000 400.000 400.000 405.000 405.000 410.000 415.000 415.000 418.717 422.434 426.151 429.869 433.586 437.303 441.020 444.737 448.454 452.171 455.888 459.606 463.323 467.040 470.757 474.474 478.191 481.908 485.625 489.343 493.060 496.777 500.494 504.211 507.928 511.645 515.362 519.080 525.000 535.000 540.000 550.000 560.000 575.000 585.000 605.000 625.000 650.000 680.993
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 63 60 63 63 60 51 63 57 51 66 63 66 69 66 69 72 69 69 66 69 69 69 72 66 72 66 72 66 72 72 69 69 69 69 69 63 69 63 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 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 1.953125 -0.390625 -1.953125 -1.171875 0.390625 -1.953125 2.734375 -1.953125 1.171875 1.953125 2.734375 1.171875 -1.953125 -2.734375 -1.171875 1.953125 -2.734375 -1.953125 0.390625 -1.953125 1.953125 2.734375 2.734375 -0.390625 2.734375 0.390625 1.953125 2.734375 1.171875 -0.390625 -1.953125 -2.734375 -2.734375 -1.953125 2.734375
</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" >
89.489 90.0 95.0 100.0 105.0 110.0 111.693 113.386 115.0 115.079 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 364.663 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.257 2.903 3.246 3.355 3.232 3.232 3.349 3.355 3.52 3.681 3.838 3.992 4.143 4.294 4.443 4.592 4.74 4.888 5.035 5.183 5.33 5.478 5.625 5.772 5.92 6.067 6.214 6.362 6.509 6.656 6.804 6.951 7.098 7.244 7.391 7.537 7.683 7.828 7.972 8.116 8.259 8.401 8.541 8.68 8.816 8.949 9.08 9.206 9.327 9.442 9.549 9.647 9.735 9.81 9.871 9.915 9.942 9.95 9.95 9.947 9.938 9.924 9.905 9.881 9.852 9.819 9.781 9.739 9.694 9.644 9.591 9.535 9.476 9.413 9.348 9.28 9.21 9.137 9.062 8.985 8.907 8.826 8.744 8.661 8.576 8.49 8.403 8.315 8.226 8.137 8.047 7.956 7.865 7.773 7.682 7.59 7.497 7.405 7.313 7.221 7.129 7.037 6.946 6.855 6.764 6.673 6.583 6.494 6.405 6.316 6.228 6.141 6.055 5.969 5.883 5.799 5.715 5.632 5.55 5.468 5.388 5.308 5.229 5.151 5.074 4.997 4.922 4.847 4.773 4.7 4.628 4.557 4.486 4.417 4.348 4.281 4.214 4.148 4.083 4.018 3.955 3.893 3.831 3.77 3.71 3.651 3.593 3.535 3.479 3.423 3.368 3.314 3.26 3.208 3.156 3.105 3.055 3.005 2.956 2.908 2.861 2.814 2.768 2.723 2.678 2.635 2.591 2.549 2.507 2.466 2.425 2.386 2.346 2.308 2.27 2.232 2.195 2.159 2.123 2.088 2.054 2.02 1.986 1.953 1.921 1.889

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.355" PeakHeight="110.0" Num="3" Error="0.0">
-30.475 13.114 -3.15
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.355" EndFrequency="9.95" PeakHeight="364.663" Num="5" zHalfNm="237.896" Error="2.371">
-224.962 -37.968 15.222 -2.38 0.504
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.079" Depth="0.123"/>
<TopsideChapman PeakHeight="364.663" PeakDensity="1228318.9" PeakScaleHeight="92.142" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
