<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 20:10:00.000"
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) 20:10:00</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">
FF202628810152010009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.483" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.821" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="506.552" 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="1.830" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="389.594" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="276.002" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.446" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="159.452" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.993" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.206" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="163.760" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.970" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="87">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 317.500 320.000 321.250 322.500 323.750 325.000 325.714 326.429 327.143 327.857 328.571 329.286 330.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 348.333 351.667 355.000 350.000 353.403 356.807 360.210 363.613 367.017 370.420 373.823 377.226 380.630 384.033 387.436 390.840 394.243 397.646 401.050 404.453 407.856 411.259 414.663 418.066 421.469 424.873 428.276 431.679 435.083 438.486 441.889 445.292 448.696 452.099 455.502 458.906 462.309 465.712 469.116 472.519 475.922 479.325 482.729 486.132 489.535 492.939 496.342 499.745 503.149 506.552 510.478 514.821 519.651 525.000 530.000 540.000 545.000 555.000 565.000 580.000 595.000 610.000 635.000 665.000 707.133
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 0 72 57 0 0 75 0 0 78 0 0 0 0 78 78 78 78 78 78 78 0 0 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 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 2.734375 1.171875 -0.390625 2.734375 1.953125 0.390625 1.953125 1.953125 1.953125 1.953125 -0.390625 2.734375 2.734375 -0.390625 -1.953125 1.171875 -1.953125 2.734375 -1.953125 -1.171875 -1.171875 -1.953125 2.734375 1.171875 2.734375 -1.953125 -1.953125 -0.390625 -0.390625 1.953125 -0.390625 -0.390625 -2.734375 0.390625 2.734375 1.953125 0.390625 -1.953125 -2.734375 -1.953125 2.734375 1.171875 2.734375 1.953125 2.734375 2.734375 -1.171875 -0.390625 -0.390625
</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" >
89.813 90.0 95.0 100.0 105.0 110.0 115.0 119.176 120.0 125.0 128.353 130.0 135.0 137.529 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 389.594 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.216 1.225 1.585 1.771 1.83 1.79 1.694 1.694 1.694 1.694 1.718 1.793 1.83 1.899 2.038 2.176 2.318 2.464 2.617 2.776 2.944 3.12 3.304 3.498 3.7 3.909 4.126 4.348 4.575 4.805 5.038 5.272 5.506 5.739 5.971 6.201 6.429 6.654 6.876 7.096 7.311 7.523 7.731 7.935 8.134 8.329 8.519 8.703 8.882 9.054 9.219 9.377 9.527 9.667 9.798 9.919 10.028 10.124 10.207 10.277 10.331 10.37 10.393 10.4 10.4 10.396 10.385 10.367 10.343 10.313 10.278 10.236 10.19 10.139 10.082 10.022 9.957 9.888 9.816 9.74 9.661 9.579 9.494 9.407 9.317 9.225 9.132 9.036 8.939 8.84 8.74 8.639 8.537 8.434 8.33 8.226 8.121 8.016 7.911 7.806 7.7 7.595 7.49 7.385 7.28 7.175 7.071 6.968 6.865 6.763 6.661 6.56 6.46 6.361 6.262 6.165 6.068 5.972 5.877 5.783 5.69 5.599 5.508 5.418 5.329 5.241 5.155 5.069 4.985 4.901 4.819 4.738 4.658 4.579 4.501 4.424 4.349 4.274 4.2 4.128 4.057 3.986 3.917 3.849 3.782 3.716 3.651 3.587 3.524 3.462 3.401 3.341 3.282 3.224 3.166 3.11 3.055 3.001 2.947 2.895 2.843 2.792 2.742 2.693 2.645 2.597 2.551 2.505 2.46 2.415 2.372 2.329 2.287 2.246 2.205 2.165 2.126 2.088 2.05 2.013 1.976 1.94 1.905 1.87 1.836 1.803 1.77

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.83" PeakHeight="110.0" Num="3" Error="0.0">
-28.787 10.744 -2.144
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.83" EndFrequency="10.4" PeakHeight="389.594" Num="5" zHalfNm="276.002" Error="3.312">
-250.351 -4.359 4.924 -4.026 1.747
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="27.529" Depth="0.136"/>
<TopsideChapman PeakHeight="389.594" PeakDensity="1341935.5" PeakScaleHeight="84.206" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
