<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 19:30:00.000"
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 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" >
2026.10.13 (286) 19:30:00</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">
FF202628610131930009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.579" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.050" 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="12.050" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="510.000" 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="2.338" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="372.469" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="276.165" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.457" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="132.834" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.718" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.405" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="156.920" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.390" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="117">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 305.000 305.000 308.333 311.667 315.000 315.000 315.000 315.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 345.000 347.089 349.177 351.266 353.354 355.443 357.532 359.620 361.709 363.797 365.886 367.975 370.063 372.152 374.241 376.329 378.418 380.506 382.595 384.684 386.772 388.861 390.949 393.038 395.127 397.215 399.304 401.392 403.481 405.570 407.658 409.747 411.835 413.924 416.013 418.101 420.190 422.278 424.367 426.456 428.544 430.633 432.722 434.810 436.899 438.987 441.076 443.165 445.253 447.342 449.430 451.519 453.608 455.696 457.785 459.873 461.962 464.051 466.139 468.228 470.316 472.405 474.494 476.582 478.671 480.759 482.848 484.937 487.025 489.114 491.203 493.291 495.380 497.468 499.557 501.646 503.734 505.823 507.911 510.000 520.000 525.000 540.000 550.000 567.808 594.254 637.635
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 75 63 0 0 75 78 75 72 72 75 75 72 75 75 72 75 75 75 75 75 75 69 72 72 63 66 72 72 69 72 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 0 57 60 57 57 57 48 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 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.953125 -2.734375 1.953125 1.171875 2.734375 -0.390625 -1.171875 -1.953125 -0.390625 -1.953125 -1.953125 -0.390625 2.734375 1.953125 -1.171875 1.171875 -2.734375 2.734375 1.171875 0.390625 -1.171875 -1.953125 -1.953125 -1.171875 2.734375 -2.734375 -2.734375 2.734375 2.734375 2.734375 1.953125 -2.734375 2.734375 -0.390625 -1.171875 -2.734375 -1.171875 -1.953125 -0.390625 0.390625 -2.734375 1.171875 -2.734375 -1.953125 -0.390625 2.734375 -2.734375 0.390625 0.390625 2.734375 1.171875 -2.734375 1.953125 1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 1.953125 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" >
89.675 90.0 95.0 100.0 105.0 110.0 115.0 116.407 120.0 122.813 125.0 129.22 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 372.469 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.227 1.569 2.024 2.262 2.338 2.261 2.211 2.211 2.211 2.254 2.338 2.367 2.55 2.73 2.911 3.093 3.276 3.462 3.65 3.84 4.032 4.227 4.424 4.623 4.823 5.025 5.228 5.433 5.639 5.846 6.054 6.264 6.474 6.685 6.897 7.11 7.324 7.539 7.754 7.97 8.187 8.405 8.623 8.841 9.06 9.279 9.497 9.714 9.93 10.143 10.353 10.558 10.757 10.945 11.121 11.28 11.418 11.528 11.605 11.645 11.65 11.649 11.637 11.615 11.583 11.541 11.49 11.431 11.363 11.288 11.206 11.117 11.022 10.922 10.816 10.705 10.59 10.472 10.349 10.224 10.095 9.964 9.831 9.696 9.559 9.421 9.282 9.142 9.001 8.86 8.719 8.578 8.437 8.296 8.156 8.016 7.877 7.739 7.601 7.465 7.33 7.196 7.063 6.932 6.802 6.674 6.547 6.422 6.298 6.176 6.056 5.937 5.821 5.705 5.592 5.48 5.37 5.262 5.156 5.051 4.948 4.847 4.748 4.65 4.554 4.46 4.368 4.277 4.188 4.1 4.014 3.93 3.848 3.767 3.687 3.609 3.533 3.458 3.384 3.312 3.242 3.173 3.105 3.039 2.974 2.91 2.847 2.786 2.726 2.668 2.61 2.554 2.499 2.445 2.392 2.341 2.29 2.24 2.192 2.144 2.098 2.052 2.008 1.964 1.922 1.88 1.839 1.799 1.76 1.721 1.684 1.647 1.611 1.576 1.542 1.508 1.475 1.443 1.412 1.381 1.351 1.321 1.292 1.264 1.236 1.209 1.183

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.338" PeakHeight="110.0" Num="3" Error="0.0">
-29.527 11.747 -2.545
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.338" EndFrequency="11.65" PeakHeight="372.469" Num="5" zHalfNm="276.165" Error="1.772">
-218.244 -41.02 19.861 -4.789 0.943
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="19.22" Depth="0.127"/>
<TopsideChapman PeakHeight="372.469" PeakDensity="1683902.0" PeakScaleHeight="70.405" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
