<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 21:30:00.000"
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" >
2026.10.30 (303) 21:30:00</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">
FF202630310302130009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.521" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.023" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="400.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="400.000" 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="7.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="555.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.408" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="433.874" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="372.553" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.861" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="92.263" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.606" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="44.684" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="104.540" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.340" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="57">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
400.000 410.000 423.333 436.667 450.000 452.500 455.000 455.000 455.000 460.000 460.000 460.000 460.000 460.000 461.563 463.125 464.688 466.250 467.813 469.375 470.938 472.500 474.063 475.625 477.188 478.750 480.313 481.875 483.438 485.000 480.000 475.000 478.333 481.667 485.000 488.333 491.667 495.000 500.000 500.000 505.000 505.000 510.000 510.000 515.000 515.000 520.000 525.000 525.000 530.000 530.000 535.000 535.000 540.000 550.000 550.000 555.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 0 0 72 0 0 72 72 63 0 0 72 63 0 0 0 0 0 72 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 69 0 72 0 0 0 0 72 0 72 69 69 57 66 69 75 78 78
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -0.390625 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375
</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" >
92.562 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.205 140.0 145.0 150.0 155.0 160.0 165.0 168.411 170.0 175.0 180.0 185.0 190.0 195.0 197.616 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 433.874 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.27 0.353 0.395 0.408 0.403 0.389 0.365 0.327 0.271 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.211 0.247 0.283 0.318 0.354 0.389 0.408 0.441 0.506 0.571 0.639 0.712 0.79 0.875 0.967 1.067 1.173 1.287 1.407 1.533 1.664 1.799 1.938 2.079 2.223 2.369 2.517 2.667 2.819 2.972 3.127 3.283 3.441 3.601 3.763 3.927 4.094 4.262 4.433 4.607 4.783 4.963 5.146 5.332 5.521 5.713 5.909 6.107 6.306 6.504 6.697 6.876 7.026 7.125 7.15 7.15 7.137 7.109 7.066 7.01 6.941 6.861 6.772 6.674 6.568 6.456 6.338 6.215 6.088 5.958 5.826 5.692 5.556 5.42 5.283 5.147 5.011 4.876 4.742 4.61 4.479 4.35 4.223 4.099 3.977 3.857 3.739 3.625 3.513 3.403 3.296 3.192 3.091 2.992 2.896 2.803 2.712 2.623 2.538 2.455 2.374 2.296 2.22 2.146 2.075 2.006 1.939 1.874 1.811 1.75 1.691 1.634 1.579 1.526 1.474 1.424 1.376 1.329 1.284 1.241 1.199 1.158 1.118 1.08 1.043 1.008 0.973 0.94 0.908 0.877 0.847 0.818 0.79 0.763 0.737 0.712 0.687 0.664 0.641 0.619 0.598 0.577 0.558 0.538 0.52 0.502 0.485 0.468 0.452 0.437 0.422 0.407 0.393 0.38 0.367 0.354 0.342 0.33 0.319 0.308 0.297 0.287 0.277 0.268 0.259 0.25 0.241 0.233 0.225

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.408" PeakHeight="110.0" Num="3" Error="0.0">
-20.423 3.218 -0.233
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.408" EndFrequency="7.15" PeakHeight="433.874" Num="5" zHalfNm="372.553" Error="3.794">
-208.411 -50.235 31.879 -13.275 3.784
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="87.616" Depth="0.208"/>
<TopsideChapman PeakHeight="433.874" PeakDensity="634274.2" PeakScaleHeight="44.684" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
