<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 13:20:00.000"
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) 13:20:00</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">
FF202628910161320009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.670" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.574" 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="11.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="11.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.329" 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="4.332" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="342.725" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="243.385" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.208" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="130.586" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.702" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="72.947" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="168.430" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.290" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="107">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 305.000 305.000 307.500 310.000 310.000 310.000 310.000 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 321.987 323.974 325.962 327.949 329.936 331.923 333.910 335.897 337.885 339.872 341.859 343.846 345.833 347.821 349.808 351.795 353.782 355.769 357.756 359.744 361.731 363.718 365.705 367.692 369.679 371.667 373.654 375.641 377.628 379.615 381.603 383.590 385.577 387.564 389.551 391.538 393.526 395.513 397.500 399.487 401.474 403.462 405.449 407.436 409.423 411.410 413.397 415.385 417.372 419.359 421.346 423.333 425.321 427.308 429.295 431.282 433.269 435.256 437.244 439.231 441.218 443.205 445.192 447.179 449.167 451.154 453.141 455.128 457.115 459.103 461.090 463.077 465.064 467.051 469.038 471.026 473.013 475.000 480.000 485.000 495.000 502.538 512.192 525.000 542.808 569.254 612.635
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 63 63 0 63 66 66 63 63 69 69 66 66 0 66 66 69 69 66 66 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 0 0 0 57 54 57 57 57 57 54 51 42 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 -1.171875 0.390625 -0.390625 -1.953125 -2.734375 -0.390625 0.390625 1.953125 -1.953125 -1.953125 -1.171875 -2.734375 1.171875 0.390625 2.734375 0.390625 -1.171875 2.734375 -1.171875 1.171875 -1.171875 -1.171875 1.171875 1.171875 2.734375 0.390625 -2.734375 -2.734375 1.171875 2.734375 0.390625 -1.171875 2.734375 -2.734375 -1.171875 1.953125 -2.734375 -2.734375 2.734375 -1.171875 -2.734375 -2.734375 2.734375 1.171875 0.390625 1.953125 1.953125 -0.390625 2.734375 0.390625 2.734375 1.953125 -2.734375 1.171875 -2.734375 -2.734375 -1.953125 2.734375 0.390625 -0.390625 0.390625 -1.171875 -2.734375 0.390625 -0.390625 -1.953125 -0.390625 -1.171875 0.390625 1.171875 -1.953125 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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" >
89.492 90.0 95.0 100.0 105.0 110.0 111.801 113.601 115.0 115.402 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 342.725 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.24 2.881 3.221 3.329 3.206 3.206 3.302 3.329 3.523 3.726 3.922 4.113 4.3 4.484 4.666 4.846 5.025 5.203 5.381 5.559 5.737 5.915 6.094 6.275 6.456 6.638 6.822 7.008 7.195 7.384 7.575 7.768 7.963 8.16 8.359 8.56 8.763 8.967 9.173 9.379 9.586 9.793 9.998 10.201 10.399 10.591 10.773 10.943 11.096 11.227 11.332 11.406 11.444 11.45 11.449 11.439 11.419 11.39 11.352 11.306 11.252 11.19 11.121 11.045 10.963 10.876 10.783 10.685 10.582 10.476 10.365 10.251 10.134 10.014 9.892 9.767 9.64 9.512 9.382 9.251 9.119 8.986 8.853 8.719 8.585 8.451 8.317 8.184 8.05 7.918 7.785 7.654 7.523 7.394 7.265 7.138 7.011 6.886 6.762 6.639 6.518 6.398 6.28 6.163 6.048 5.934 5.822 5.711 5.602 5.494 5.388 5.284 5.181 5.08 4.981 4.883 4.786 4.692 4.599 4.507 4.417 4.329 4.242 4.157 4.073 3.991 3.91 3.831 3.753 3.677 3.602 3.528 3.456 3.385 3.316 3.248 3.181 3.116 3.051 2.988 2.927 2.866 2.807 2.749 2.691 2.636 2.581 2.527 2.475 2.423 2.372 2.323 2.274 2.227 2.18 2.135 2.09 2.046 2.004 1.962 1.92 1.88 1.841 1.802 1.764 1.727 1.691 1.655 1.62 1.586 1.553 1.52 1.488 1.457 1.426 1.396 1.367 1.338 1.31 1.282 1.255 1.229 1.203 1.177 1.152 1.128

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.329" PeakHeight="110.0" Num="3" Error="0.0">
-30.457 13.086 -3.137
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.329" EndFrequency="11.45" PeakHeight="342.725" Num="5" zHalfNm="243.385" Error="1.498">
-197.328 -44.654 15.324 -0.459 -0.206
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.402" Depth="0.123"/>
<TopsideChapman PeakHeight="342.725" PeakDensity="1626581.9" PeakScaleHeight="72.947" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
