<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 12:50:00.000"
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="15.0">
<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" >
2026.10.17 (290) 12:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202629010171250009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.647" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.583" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="466.963" 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="3.265" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.302" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="349.686" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="247.036" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.074" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="135.562" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.273" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="76.762" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="173.710" 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="100">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 346.918 348.836 350.754 352.672 354.590 356.508 358.427 360.345 362.263 364.181 366.099 368.017 369.935 371.853 373.771 375.689 377.607 379.525 381.444 383.362 385.280 387.198 389.116 391.034 392.952 394.870 396.788 398.706 400.624 402.542 404.460 406.379 408.297 410.215 412.133 414.051 415.969 417.887 419.805 421.723 423.641 425.559 427.477 429.396 431.314 433.232 435.150 437.068 438.986 440.904 442.822 444.740 446.658 448.576 450.494 452.412 454.331 456.249 459.491 463.047 466.963 471.298 476.122 480.000 490.000 495.000 505.000 510.000 520.000 535.000 550.000 570.000 595.000 624.002
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 0 0 0 0 0 0 0 57 66 69 69 69 66 63 66 66 66 66 66 63 60 60 69 0 57 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 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 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 2.734375 2.734375 1.953125 -1.953125 -2.734375 -1.953125 1.171875 2.734375 -2.734375 2.734375 -0.390625 -2.734375 1.953125 -0.390625 -2.734375 1.171875 -1.953125 -0.390625 1.953125 -2.734375 0.390625 -2.734375 -1.953125 1.953125 -2.734375 -1.171875 2.734375 -1.953125 -0.390625 2.734375 -2.734375 -1.953125 0.390625 -0.390625 0.390625 -2.734375 -0.390625 -0.390625 -0.390625 -1.953125 2.734375 1.953125 -1.953125 1.171875 -2.734375 0.390625 1.171875 2.734375 -2.734375 2.734375 1.953125 1.953125 -1.171875 2.734375 -1.171875 -1.171875 -1.953125 -1.171875 1.171875 -0.390625 -0.390625 -1.171875 -2.734375 0.390625 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" >
89.503 90.0 95.0 100.0 105.0 110.0 112.067 114.133 115.0 116.2 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 349.686 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.196 2.826 3.159 3.265 3.143 3.143 3.194 3.265 3.416 3.605 3.786 3.96 4.128 4.293 4.454 4.613 4.77 4.926 5.081 5.237 5.392 5.549 5.706 5.864 6.023 6.185 6.348 6.513 6.681 6.852 7.025 7.201 7.38 7.562 7.747 7.935 8.126 8.32 8.516 8.715 8.914 9.113 9.311 9.506 9.696 9.88 10.054 10.215 10.362 10.492 10.601 10.688 10.751 10.788 10.8 10.8 10.795 10.781 10.76 10.73 10.693 10.649 10.599 10.542 10.479 10.41 10.336 10.258 10.174 10.087 9.996 9.9 9.802 9.701 9.597 9.49 9.381 9.27 9.157 9.043 8.928 8.811 8.693 8.575 8.455 8.336 8.216 8.096 7.976 7.856 7.736 7.616 7.497 7.379 7.261 7.143 7.027 6.911 6.796 6.682 6.57 6.458 6.347 6.237 6.129 6.022 5.916 5.811 5.708 5.605 5.505 5.405 5.307 5.21 5.115 5.021 4.928 4.837 4.747 4.659 4.571 4.486 4.401 4.318 4.236 4.156 4.077 3.999 3.923 3.848 3.774 3.701 3.63 3.56 3.491 3.423 3.357 3.292 3.228 3.165 3.103 3.043 2.983 2.925 2.867 2.811 2.756 2.702 2.648 2.596 2.545 2.495 2.445 2.397 2.35 2.303 2.257 2.213 2.169 2.126 2.083 2.042 2.001 1.962 1.923 1.884 1.847 1.81 1.774 1.738 1.704 1.67 1.636 1.604 1.572 1.54 1.509 1.479 1.45 1.421 1.392 1.364 1.337 1.31 1.284 1.258

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.265" PeakHeight="110.0" Num="3" Error="0.0">
-30.408 13.015 -3.104
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.265" EndFrequency="10.8" PeakHeight="349.686" Num="5" zHalfNm="247.036" Error="2.888">
-204.3 -41.301 10.242 2.786 -0.913
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.2" Depth="0.122"/>
<TopsideChapman PeakHeight="349.686" PeakDensity="1447146.4" PeakScaleHeight="76.762" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
