<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 10:40:00.000"
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" >
2026.10.16 (289) 10:40:00</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">
FF202628910161040009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.070" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.165" 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="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="379.867" 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="2.701" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="292.611" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.163" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.868" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="105.456" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="31.933" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="57.923" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="121.580" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.620" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="88">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 275.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 285.000 282.500 280.000 280.000 282.500 285.000 285.000 285.000 285.000 285.000 285.000 286.694 288.388 290.082 291.776 293.470 295.164 296.858 298.552 300.246 301.941 303.635 305.329 307.023 308.717 310.411 312.105 313.799 315.493 317.187 318.881 320.575 322.269 323.963 325.657 327.351 329.045 330.739 332.434 334.128 335.822 337.516 339.210 340.904 342.598 344.292 345.986 347.680 349.374 351.068 352.762 354.456 356.150 357.844 359.538 361.232 362.927 364.621 366.315 368.009 369.703 371.397 373.091 374.785 376.479 378.173 379.867 395.000 410.000 430.000 455.000 480.000 515.000 555.980
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 72 0 63 0 0 0 0 0 72 0 75 72 75 0 0 75 72 0 75 75 75 81 0 75 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 -1.171875 1.171875 0.390625 1.953125 1.171875 0.390625 2.734375 -2.734375 -2.734375 -1.953125 -1.171875 -2.734375 1.953125 0.390625 -0.390625 0.390625 1.953125 -2.734375 0.390625 1.953125 1.953125 2.734375 2.734375 2.734375 2.734375 -0.390625 -2.734375 1.171875 -1.171875 -1.953125 -1.171875 0.390625 -1.953125 -1.953125 -0.390625 1.953125 -2.734375 1.171875 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 2.734375 1.953125
</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" >
89.599 90.0 95.0 100.0 105.0 110.0 114.599 115.0 119.198 120.0 123.797 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 292.611 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.814 2.338 2.613 2.701 2.578 2.578 2.578 2.599 2.701 2.749 2.962 3.19 3.427 3.669 3.912 4.156 4.399 4.642 4.886 5.131 5.377 5.625 5.875 6.128 6.384 6.643 6.905 7.168 7.434 7.701 7.968 8.232 8.493 8.746 8.99 9.22 9.433 9.624 9.791 9.929 10.035 10.108 10.145 10.15 10.148 10.134 10.107 10.066 10.014 9.951 9.877 9.794 9.702 9.602 9.495 9.381 9.261 9.136 9.007 8.873 8.736 8.596 8.453 8.308 8.162 8.014 7.865 7.716 7.566 7.417 7.267 7.119 6.971 6.823 6.678 6.533 6.39 6.248 6.108 5.97 5.833 5.699 5.567 5.436 5.308 5.182 5.058 4.937 4.818 4.701 4.586 4.473 4.363 4.255 4.149 4.046 3.945 3.846 3.749 3.654 3.562 3.471 3.383 3.296 3.212 3.13 3.049 2.971 2.894 2.82 2.747 2.675 2.606 2.538 2.472 2.408 2.345 2.284 2.224 2.166 2.109 2.054 2.0 1.948 1.897 1.847 1.798 1.751 1.705 1.66 1.616 1.573 1.532 1.491 1.452 1.414 1.376 1.34 1.305 1.27 1.236 1.204 1.172 1.141 1.111 1.081 1.052 1.025 0.997 0.971 0.945 0.92 0.896 0.872 0.849 0.826 0.804 0.783 0.762 0.742 0.722 0.703 0.684 0.666 0.648 0.631 0.614 0.598 0.582 0.567 0.552 0.537 0.523 0.509 0.495 0.482 0.469 0.457 0.445 0.433 0.421 0.41 0.399 0.389 0.378 0.368

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.701" PeakHeight="110.0" Num="3" Error="0.0">
-29.922 12.307 -2.786
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.701" EndFrequency="10.15" PeakHeight="292.611" Num="5" zHalfNm="215.163" Error="3.003">
-157.045 -16.938 5.539 0.345 -0.715
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.797" Depth="0.123"/>
<TopsideChapman PeakHeight="292.611" PeakDensity="1278194.8" PeakScaleHeight="57.923" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
