<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 11:00:00.000"
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) 11:00:00</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">
FF202628810151100009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.975" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.384" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.900" 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="10.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="406.740" 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="2.826" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="302.201" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="234.215" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.947" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="90.652" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="31.224" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="50.974" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="121.190" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.160" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="110">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.3 10.35 10.4 10.45 10.5 10.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
285.000 285.000 285.000 285.000 285.455 285.909 286.364 286.818 287.273 287.727 288.182 288.636 289.091 289.545 290.000 292.500 295.000 295.000 295.000 295.000 296.250 297.500 298.750 300.000 300.000 300.000 300.000 302.500 305.000 300.000 300.000 300.000 300.000 300.000 301.250 302.500 303.750 305.000 305.000 305.000 306.562 308.124 309.686 311.248 312.811 314.373 315.935 317.497 319.059 320.621 322.183 323.745 325.308 326.870 328.432 329.994 331.556 333.118 334.680 336.242 337.804 339.367 340.929 342.491 344.053 345.615 347.177 348.739 350.301 351.863 353.426 354.988 356.550 358.112 359.674 361.236 362.798 364.360 365.923 367.485 369.047 370.609 372.171 373.733 375.295 376.857 378.419 379.982 381.544 383.106 384.668 386.230 387.792 389.354 390.160 391.068 392.099 393.280 394.645 396.243 398.137 400.418 403.219 406.740 411.301 420.000 425.000 440.000 460.000 511.102
</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 69 0 69 72 69 75 0 0 0 72 0 0 78 0 69 78 0 75 75 66 60 0 0 72 69 69 57 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 -1.953125 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 0.390625 -1.171875 -0.390625 0.390625 -0.390625 -1.171875 -2.734375 1.953125 2.734375 0.390625 0.390625 2.734375 -1.953125 -2.734375 -1.953125 1.171875 2.734375 1.171875 2.734375 2.734375 -2.734375 -0.390625 2.734375 -1.953125 1.953125 -1.171875 -1.953125 1.953125 -1.953125 -2.734375 -1.171875 2.734375 1.953125 -2.734375 -2.734375 2.734375 0.390625 -1.171875 -0.390625 1.171875 0.390625 0.390625 2.734375 0.390625 -0.390625 1.953125 2.734375
</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" >
89.576 90.0 95.0 100.0 105.0 110.0 114.011 115.0 118.023 120.0 122.034 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 302.201 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.899 2.446 2.734 2.826 2.704 2.704 2.704 2.764 2.826 2.972 3.192 3.395 3.588 3.775 3.96 4.143 4.326 4.51 4.696 4.883 5.074 5.268 5.466 5.669 5.876 6.089 6.307 6.532 6.763 7.002 7.247 7.5 7.76 8.028 8.302 8.581 8.864 9.148 9.427 9.696 9.947 10.169 10.351 10.479 10.543 10.55 10.547 10.527 10.488 10.434 10.363 10.279 10.182 10.073 9.953 9.824 9.686 9.541 9.39 9.233 9.071 8.904 8.735 8.563 8.389 8.214 8.038 7.861 7.684 7.508 7.333 7.159 6.986 6.814 6.645 6.478 6.313 6.15 5.99 5.833 5.678 5.527 5.378 5.232 5.089 4.949 4.813 4.679 4.548 4.421 4.296 4.174 4.056 3.94 3.827 3.717 3.61 3.506 3.404 3.306 3.209 3.116 3.025 2.936 2.85 2.766 2.685 2.606 2.529 2.454 2.381 2.311 2.242 2.176 2.111 2.048 1.987 1.928 1.87 1.814 1.76 1.708 1.657 1.607 1.559 1.512 1.467 1.423 1.38 1.339 1.299 1.26 1.222 1.185 1.149 1.115 1.081 1.049 1.017 0.987 0.957 0.928 0.9 0.873 0.847 0.821 0.797 0.773 0.749 0.727 0.705 0.684 0.663 0.643 0.624 0.605 0.587 0.569 0.552 0.535 0.519 0.503 0.488 0.473 0.459 0.445 0.432 0.419 0.406 0.394 0.382 0.371 0.359 0.348 0.338 0.328 0.318 0.308 0.299 0.29 0.281 0.273 0.264 0.257 0.249 0.241

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.826" PeakHeight="110.0" Num="3" Error="0.0">
-30.043 12.48 -2.861
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.826" EndFrequency="10.55" PeakHeight="302.201" Num="5" zHalfNm="234.215" Error="3.032">
-149.184 -42.128 9.501 1.845 -0.201
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="12.034" Depth="0.122"/>
<TopsideChapman PeakHeight="302.201" PeakDensity="1380924.4" PeakScaleHeight="50.974" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
