<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 11:20:00.000"
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" >
2026.10.15 (288) 11:20:00</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">
FF202628810151120009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.834" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.330" 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="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="285.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="285.000" 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="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="437.498" 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="2.935" 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="/" />
<Modeled Name="foF1p" Val="4.141" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="312.410" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="226.926" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.971" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="112.331" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="35.966" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="61.933" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="142.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.300" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="92">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
285.000 285.000 285.000 285.000 287.000 289.000 291.000 293.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 297.088 299.176 301.264 303.352 305.440 307.527 309.615 311.703 313.791 315.879 317.967 320.055 322.143 324.231 326.319 328.406 330.494 332.582 334.670 336.758 338.846 340.934 343.022 345.110 347.198 349.286 351.373 353.461 355.549 357.637 359.725 361.813 363.901 365.989 368.077 370.165 372.253 374.340 376.428 378.516 380.604 382.692 384.780 386.868 388.956 391.044 393.132 395.219 397.307 399.395 401.483 403.571 405.659 407.747 409.835 411.923 414.011 416.099 418.186 420.274 421.778 423.490 425.457 427.740 430.423 433.621 437.498 442.295 450.000 455.000 465.000 485.000 510.000 554.146
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 69 66 69 0 0 66 0 60 0 0 0 69 0 72 0 66 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
</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 -2.734375 0.390625 0.390625 -2.734375 1.171875 -1.953125 -1.171875 -0.390625 0.390625 -0.390625 2.734375 1.171875 -1.171875 0.390625 -0.390625 -2.734375 -1.953125 1.953125 -2.734375 0.390625 -2.734375 0.390625 1.171875 1.171875 -1.171875 -1.953125 1.953125 0.390625 -0.390625 -2.734375 -1.171875 2.734375 2.734375 0.390625 0.390625 2.734375 -1.953125 2.734375 0.390625 -0.390625 -2.734375 1.171875 -1.953125 -1.953125 2.734375 0.390625 -2.734375 1.171875 -1.953125 -2.734375 -0.390625 1.953125 0.390625 -0.390625 -2.734375 1.953125 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" >
89.556 90.0 95.0 100.0 105.0 110.0 113.512 115.0 117.023 120.0 120.535 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 312.41 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.973 2.541 2.84 2.935 2.813 2.813 2.813 2.916 2.935 3.137 3.353 3.564 3.77 3.975 4.178 4.38 4.583 4.785 4.987 5.189 5.391 5.594 5.797 6.001 6.206 6.411 6.616 6.823 7.03 7.238 7.447 7.657 7.867 8.078 8.29 8.501 8.713 8.923 9.131 9.337 9.536 9.728 9.906 10.065 10.198 10.294 10.344 10.35 10.348 10.335 10.31 10.273 10.226 10.168 10.101 10.026 9.942 9.851 9.753 9.648 9.538 9.423 9.303 9.179 9.052 8.921 8.788 8.652 8.515 8.375 8.235 8.093 7.951 7.809 7.666 7.523 7.381 7.239 7.098 6.958 6.819 6.681 6.544 6.408 6.274 6.142 6.011 5.882 5.755 5.629 5.506 5.384 5.264 5.147 5.031 4.917 4.805 4.695 4.588 4.482 4.378 4.277 4.177 4.079 3.984 3.89 3.798 3.708 3.62 3.534 3.45 3.368 3.287 3.208 3.131 3.056 2.982 2.91 2.84 2.771 2.704 2.638 2.574 2.511 2.45 2.39 2.332 2.275 2.219 2.165 2.111 2.06 2.009 1.96 1.911 1.864 1.819 1.774 1.73 1.687 1.646 1.605 1.565 1.527 1.489 1.452 1.416 1.381 1.347 1.314 1.281 1.249 1.218 1.188 1.159 1.13 1.102 1.075 1.048 1.022 0.997 0.972 0.948 0.924 0.901 0.879 0.857 0.836 0.815 0.795 0.775 0.756 0.737 0.719 0.701 0.683 0.666 0.65 0.633 0.618 0.602 0.587 0.573 0.558 0.545 0.531

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.935" PeakHeight="110.0" Num="3" Error="0.0">
-30.14 12.621 -2.925
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.935" EndFrequency="10.35" PeakHeight="312.41" Num="5" zHalfNm="226.926" Error="1.438">
-167.784 -37.578 15.725 -2.689 0.451
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.535" Depth="0.122"/>
<TopsideChapman PeakHeight="312.41" PeakDensity="1329063.2" PeakScaleHeight="61.933" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
