<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 14:20:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.10.16 (289) 14:20:00</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">
FF202628910161420009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.601" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.435" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.396" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.363" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="360.186" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="256.502" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.564" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="137.743" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.281" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.488" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="174.780" 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="119">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 320.000 320.000 320.000 320.000 320.000 322.500 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 336.000 337.000 338.000 339.000 340.000 345.000 346.884 348.768 350.652 352.536 354.420 356.304 358.188 360.072 361.957 363.841 365.725 367.609 369.493 371.377 373.261 375.145 377.029 378.913 380.797 382.681 384.565 386.449 388.333 390.217 392.101 393.986 395.870 397.754 399.638 401.522 403.406 405.290 407.174 409.058 410.942 412.826 414.710 416.594 418.478 420.362 422.246 424.130 426.014 427.899 429.783 431.667 433.551 435.435 437.319 439.203 441.087 442.971 444.855 446.739 448.623 450.507 452.391 454.275 456.159 458.043 459.928 461.812 463.696 465.580 467.464 469.348 471.232 473.116 475.000 475.000 480.000 485.000 491.250 497.500 503.750 510.000 515.124 521.172 528.420 537.264 548.297 562.445 581.246 607.445 646.480
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 60 57 57 63 60 60 66 66 63 60 66 63 57 63 66 63 69 69 72 75 75 75 0 66 66 69 66 0 0 0 0 51 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 57 54 0 51 0 42 0 45 45 54 45 45 48 45 51 51 51
</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 1.171875 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -1.953125 1.171875 1.171875 1.953125 0.390625 0.390625 0.390625 -0.390625 2.734375 0.390625 0.390625 1.171875 0.390625 2.734375 2.734375 0.390625 1.171875 -1.171875 0.390625 1.953125 0.390625 -2.734375 -0.390625 2.734375 2.734375 0.390625 2.734375 -0.390625 -2.734375 2.734375 0.390625 1.953125 1.953125 -0.390625 1.171875 -1.953125 -1.171875 2.734375 -2.734375 2.734375 0.390625 2.734375 1.171875 -1.953125 -0.390625 -0.390625 -0.390625 2.734375 1.953125 2.734375 -2.734375 2.734375 1.171875 -1.171875 2.734375 -1.171875 2.734375 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -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" >
89.483 90.0 95.0 100.0 105.0 110.0 111.526 113.051 114.577 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 360.186 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.285 2.939 3.285 3.396 3.273 3.273 3.396 3.413 3.607 3.784 3.953 4.116 4.275 4.431 4.587 4.742 4.897 5.053 5.209 5.367 5.526 5.687 5.85 6.016 6.183 6.353 6.526 6.701 6.879 7.061 7.245 7.432 7.623 7.816 8.013 8.213 8.415 8.62 8.828 9.037 9.248 9.46 9.672 9.883 10.092 10.298 10.498 10.692 10.877 11.049 11.208 11.349 11.47 11.567 11.64 11.684 11.7 11.7 11.696 11.682 11.66 11.629 11.591 11.545 11.491 11.431 11.365 11.292 11.214 11.131 11.043 10.95 10.853 10.752 10.647 10.539 10.428 10.314 10.198 10.08 9.959 9.837 9.714 9.589 9.463 9.336 9.208 9.08 8.951 8.823 8.694 8.565 8.436 8.308 8.18 8.052 7.925 7.799 7.673 7.549 7.425 7.302 7.181 7.06 6.94 6.822 6.705 6.589 6.475 6.362 6.25 6.139 6.03 5.923 5.817 5.712 5.608 5.507 5.406 5.307 5.21 5.114 5.019 4.926 4.834 4.744 4.655 4.568 4.482 4.398 4.314 4.233 4.152 4.073 3.996 3.919 3.845 3.771 3.698 3.627 3.558 3.489 3.422 3.355 3.291 3.227 3.164 3.103 3.042 2.983 2.925 2.868 2.812 2.757 2.703 2.65 2.598 2.547 2.497 2.448 2.4 2.353 2.307 2.261 2.217 2.173 2.13 2.088 2.047 2.007 1.967 1.928 1.89 1.853 1.816 1.78 1.745 1.71 1.676 1.643 1.611 1.579 1.547 1.517 1.487 1.457

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.396" PeakHeight="110.0" Num="3" Error="0.0">
-30.504 13.157 -3.17
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.396" EndFrequency="11.7" PeakHeight="360.186" Num="5" zHalfNm="256.502" Error="2.995">
-211.471 -46.007 10.139 1.638 0.092
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.577" Depth="0.123"/>
<TopsideChapman PeakHeight="360.186" PeakDensity="1698387.1" PeakScaleHeight="77.488" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
