<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 10:20:00.000"
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 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" >
2026.10.14 (287) 10:20:00</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">
FF202628710141020009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="10.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.203" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.830" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="88" Val="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="360.805" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.552" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="274.716" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="223.134" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.701" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="69.068" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="22.507" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="38.394" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="93.420" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 260.000 260.000 260.455 260.909 261.364 261.818 262.273 262.727 263.182 263.636 264.091 264.545 265.000 265.455 265.909 266.364 266.818 267.273 267.727 268.182 268.636 269.091 269.545 270.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 285.000 285.000 285.000 290.000 290.000 291.384 292.768 294.151 295.535 296.919 298.303 299.686 301.070 302.454 303.838 305.221 306.605 307.989 309.373 310.757 312.140 313.524 314.908 316.292 317.675 319.059 320.443 321.827 323.210 324.594 325.978 327.362 328.746 330.129 331.513 332.897 334.281 335.664 337.048 338.432 339.816 341.200 342.583 343.967 345.351 346.735 348.118 349.502 350.886 352.270 353.653 354.309 355.094 356.052 357.246 358.775 360.805 363.628 367.823 375.000 390.000 425.570
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 75 84 87 87 87 87 87 84 78 69 75 78 78 75 78 0 69 72 75 75 72 66 75 72 75 69 72 75 75 0 78 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 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -2.734375 2.734375 -2.734375 1.171875 1.171875 -1.171875 2.734375 -2.734375 0.390625 1.171875 0.390625 2.734375 -2.734375 -1.953125 -2.734375 1.171875 1.171875 1.953125 2.734375 0.390625 -2.734375 1.953125 2.734375 1.171875 -1.953125 1.171875 -0.390625 2.734375 -1.171875 -1.171875 1.953125 0.390625 1.171875 1.953125 -1.953125 1.953125 2.734375 0.390625 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -2.734375 0.390625 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="151">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.628 90.0 95.0 100.0 105.0 110.0 115.0 115.324 120.0 120.648 125.0 125.972 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 274.716 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.231 1.714 2.209 2.469 2.552 2.443 2.428 2.428 2.428 2.529 2.552 2.774 3.002 3.21 3.412 3.611 3.812 4.016 4.224 4.438 4.659 4.887 5.123 5.369 5.623 5.888 6.163 6.448 6.744 7.05 7.367 7.694 8.03 8.374 8.722 9.07 9.411 9.729 10.0 10.187 10.25 10.25 10.232 10.182 10.105 10.002 9.877 9.732 9.569 9.392 9.202 9.002 8.793 8.578 8.357 8.133 7.907 7.679 7.451 7.224 6.999 6.776 6.555 6.338 6.125 5.916 5.712 5.512 5.317 5.127 4.942 4.762 4.588 4.419 4.255 4.096 3.942 3.794 3.65 3.511 3.377 3.248 3.123 3.002 2.886 2.774 2.667 2.563 2.463 2.367 2.274 2.185 2.099 2.017 1.937 1.861 1.788 1.717 1.649 1.584 1.522 1.461 1.404 1.348 1.295 1.243 1.194 1.146 1.101 1.057 1.015 0.975 0.936 0.899 0.863 0.829 0.796 0.764 0.734 0.705 0.676 0.65 0.624 0.599 0.575 0.552 0.53 0.509 0.489 0.469 0.451 0.433 0.415 0.399 0.383 0.368 0.353 0.339 0.325 0.312 0.3 0.288 0.277 0.265 0.255 0.245 0.235 0.226 0.217 0.208

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.552" PeakHeight="110.0" Num="3" Error="0.0">
-29.771 12.09 -2.691
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.552" EndFrequency="10.25" PeakHeight="274.716" Num="5" zHalfNm="223.134" Error="3.332">
-118.912 -39.774 8.883 0.399 0.66
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="15.972" Depth="0.124"/>
<TopsideChapman PeakHeight="274.716" PeakDensity="1303505.0" PeakScaleHeight="38.394" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
