<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 12:20:00.000"
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: 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" >
2026.10.17 (290) 12:20:00</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">
FF202629010171220009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.546" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.222" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="9.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="506.261" 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="3.180" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.262" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="362.079" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="242.145" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.993" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="158.520" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.827" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="88.080" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="191.970" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.500" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="84">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 335.000 335.000 335.000 335.000 340.000 340.000 335.000 337.500 340.000 340.000 342.500 345.000 345.000 345.000 345.000 345.000 345.000 345.000 347.932 350.864 353.796 356.728 359.660 362.592 365.524 368.456 371.388 374.320 377.252 380.184 383.116 386.048 388.980 391.912 394.844 397.776 400.708 403.640 406.573 409.505 412.437 415.369 418.301 421.233 424.165 427.097 430.029 432.961 435.893 438.825 441.757 444.689 447.621 450.553 453.485 456.417 459.349 462.281 465.213 468.145 471.077 474.009 476.941 479.873 482.805 485.737 488.669 491.601 494.533 497.465 500.397 503.329 506.261 515.000 520.000 530.000 540.000 550.000 565.000 585.000 610.000 640.000 686.999
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 60 0 60 63 0 0 57 0 72 69 0 66 69 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 0.390625 -1.171875 2.734375 -1.953125 1.171875 -1.953125 0.390625 0.390625 -2.734375 2.734375 -1.171875 -1.953125 -2.734375 0.390625 -2.734375 1.171875 1.953125 -0.390625 2.734375 -1.171875 0.390625 -2.734375 1.171875 -1.953125 -2.734375 -1.171875 -0.390625 -1.171875 -1.171875 1.953125 1.171875 -1.171875 2.734375 -1.171875 -1.953125 1.953125 0.390625 -2.734375 -0.390625 1.171875 -1.171875 -1.953125 1.171875 1.171875 0.390625 0.390625 1.953125 -1.953125 1.953125 0.390625 -2.734375 -0.390625 -2.734375 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" >
89.515 90.0 95.0 100.0 105.0 110.0 112.427 114.855 115.0 117.282 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 362.079 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.138 2.752 3.077 3.18 3.058 3.058 3.065 3.18 3.272 3.442 3.612 3.782 3.95 4.118 4.285 4.45 4.615 4.779 4.942 5.104 5.266 5.428 5.59 5.751 5.913 6.074 6.236 6.398 6.561 6.723 6.886 7.049 7.213 7.377 7.541 7.705 7.869 8.032 8.196 8.358 8.52 8.68 8.838 8.993 9.146 9.294 9.437 9.574 9.704 9.825 9.936 10.035 10.121 10.191 10.245 10.281 10.298 10.3 10.299 10.292 10.279 10.26 10.236 10.206 10.171 10.131 10.086 10.037 9.983 9.926 9.865 9.8 9.732 9.661 9.586 9.509 9.43 9.348 9.264 9.178 9.09 9.0 8.909 8.816 8.722 8.627 8.531 8.434 8.337 8.238 8.14 8.041 7.941 7.841 7.742 7.642 7.542 7.442 7.343 7.244 7.145 7.046 6.948 6.85 6.753 6.657 6.561 6.465 6.371 6.277 6.184 6.091 6.0 5.909 5.819 5.731 5.643 5.555 5.469 5.384 5.3 5.216 5.134 5.053 4.972 4.893 4.814 4.737 4.661 4.585 4.511 4.437 4.365 4.293 4.223 4.154 4.085 4.017 3.951 3.885 3.821 3.757 3.694 3.632 3.572 3.512 3.453 3.394 3.337 3.281 3.225 3.171 3.117 3.064 3.012 2.961 2.91 2.86 2.812 2.763 2.716 2.67 2.624 2.579 2.534 2.491 2.448 2.406 2.364 2.324 2.284 2.244 2.205 2.167 2.13 2.093 2.057 2.021 1.986 1.952 1.918 1.884 1.852 1.819 1.788 1.757

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.18" PeakHeight="110.0" Num="3" Error="0.0">
-30.342 12.917 -3.06
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.18" EndFrequency="10.3" PeakHeight="362.079" Num="5" zHalfNm="242.145" Error="1.939">
-224.213 -32.242 13.108 -1.254 -0.196
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.282" Depth="0.122"/>
<TopsideChapman PeakHeight="362.079" PeakDensity="1316253.1" PeakScaleHeight="88.08" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
