<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 12:30:00.000"
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="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) 12:30:00</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">
FF202629010171230009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.621" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.655" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.000" 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="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="476.963" 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="3.211" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.277" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="348.912" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="245.597" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.013" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="133.862" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.459" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.372" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="178.030" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.230" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="91">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 330.000 330.000 331.667 333.333 335.000 335.000 335.000 335.000 335.000 337.500 340.000 340.000 345.000 345.000 345.000 347.041 349.082 351.123 353.163 355.204 357.245 359.286 361.327 363.368 365.408 367.449 369.490 371.531 373.572 375.613 377.653 379.694 381.735 383.776 385.817 387.858 389.898 391.939 393.980 396.021 398.062 400.103 402.144 404.184 406.225 408.266 410.307 412.348 414.389 416.429 418.470 420.511 422.552 424.593 426.634 428.674 430.715 432.756 434.797 436.838 438.879 440.919 442.960 445.001 447.042 449.083 451.124 453.164 455.205 457.246 459.287 461.328 463.369 465.410 467.450 469.491 473.047 476.963 481.298 486.122 490.000 500.000 505.000 515.000 520.000 530.000 545.000 560.000 580.000 603.136
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 57 0 0 54 60 0 63 60 0 60 57 0 0 0 63 0 0 66 0 60 0 0 0 0 0 45 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 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 0.390625 0.390625 -0.390625 -2.734375 0.390625 -1.171875 0.390625 2.734375 -1.171875 0.390625 -2.734375 -1.953125 -1.953125 -1.953125 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 0.390625 0.390625 1.171875 1.171875 1.171875
</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" >
89.511 90.0 95.0 100.0 105.0 110.0 112.296 114.591 115.0 116.887 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 348.912 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.159 2.779 3.106 3.211 3.089 3.089 3.111 3.211 3.333 3.524 3.71 3.89 4.066 4.236 4.404 4.568 4.73 4.89 5.048 5.206 5.362 5.519 5.675 5.831 5.987 6.144 6.302 6.461 6.621 6.782 6.944 7.108 7.273 7.44 7.609 7.779 7.952 8.126 8.302 8.479 8.658 8.838 9.018 9.198 9.377 9.554 9.726 9.892 10.048 10.191 10.316 10.419 10.495 10.539 10.55 10.55 10.543 10.528 10.505 10.474 10.436 10.39 10.338 10.279 10.215 10.145 10.07 9.99 9.905 9.817 9.724 9.628 9.529 9.427 9.322 9.214 9.105 8.994 8.881 8.766 8.65 8.534 8.416 8.298 8.179 8.06 7.94 7.821 7.701 7.582 7.463 7.344 7.226 7.109 6.992 6.876 6.761 6.646 6.533 6.421 6.309 6.199 6.09 5.982 5.876 5.77 5.666 5.564 5.462 5.362 5.263 5.166 5.07 4.975 4.882 4.79 4.7 4.611 4.523 4.437 4.352 4.269 4.187 4.106 4.026 3.948 3.872 3.796 3.722 3.649 3.578 3.507 3.438 3.371 3.304 3.239 3.175 3.112 3.05 2.989 2.93 2.871 2.814 2.758 2.703 2.649 2.595 2.543 2.492 2.442 2.393 2.345 2.298 2.251 2.206 2.161 2.118 2.075 2.033 1.992 1.951 1.912 1.873 1.835 1.798 1.761 1.726 1.691 1.656 1.622 1.589 1.557 1.525 1.494 1.464 1.434 1.405 1.376 1.348 1.321 1.294 1.267 1.241 1.216 1.191 1.167

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.211" PeakHeight="110.0" Num="3" Error="0.0">
-30.366 12.953 -3.076
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.211" EndFrequency="10.55" PeakHeight="348.912" Num="5" zHalfNm="245.597" Error="1.87">
-199.914 -48.841 17.697 -0.436 -0.531
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.887" Depth="0.122"/>
<TopsideChapman PeakHeight="348.912" PeakDensity="1380924.4" PeakScaleHeight="75.372" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
