<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 11:40:00.000"
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" >
2026.10.15 (288) 11:40:00</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">
FF202628810151140009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.773" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.982" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="441.221" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.029" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.188" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="323.304" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="232.614" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.970" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="118.510" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="38.984" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="65.822" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="153.720" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.260" 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" >
6.15 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.000 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 317.500 320.000 322.500 325.000 326.250 327.500 328.750 330.000 331.867 333.733 335.600 337.466 339.333 341.200 343.066 344.933 346.799 348.666 350.533 352.399 354.266 356.133 357.999 359.866 361.732 363.599 365.466 367.332 369.199 371.065 372.932 374.799 376.665 378.532 380.398 382.265 384.132 385.998 387.865 389.731 391.598 393.465 395.331 397.198 399.064 400.931 402.798 404.664 406.531 408.398 410.264 412.131 413.997 415.864 417.731 419.597 421.464 423.330 425.197 427.064 428.930 430.797 432.907 435.303 438.047 441.221 444.933 449.335 455.000 460.000 470.000 480.000 495.000 515.000 545.000 598.665
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 72 72 72 72 69 75 75 72 66 69 0 69 0 72 0 0 0 72 72 0 0 0 0 0 54 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 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 1.171875 0.390625 -0.390625 1.171875 -0.390625 -0.390625 2.734375 -0.390625 -1.953125 1.171875 -0.390625 0.390625 -2.734375 -1.953125 2.734375 1.953125 2.734375 2.734375 1.953125 -2.734375 -1.171875 -0.390625 2.734375 -0.390625 0.390625 -1.171875 -0.390625 1.171875 2.734375 1.953125 -2.734375 -2.734375 0.390625 -2.734375 -1.171875 0.390625 -1.171875 0.390625 -1.953125 -1.171875 -1.171875 0.390625 0.390625 -2.734375 2.734375 -0.390625 2.734375 1.171875 1.171875 -1.171875 -2.734375 -1.171875 2.734375 -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" >
89.541 90.0 95.0 100.0 105.0 110.0 113.088 115.0 116.177 119.265 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 323.304 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.036 2.622 2.931 3.029 2.907 2.907 2.907 3.029 3.058 3.26 3.466 3.672 3.876 4.077 4.275 4.471 4.664 4.854 5.043 5.231 5.417 5.603 5.788 5.973 6.159 6.345 6.532 6.719 6.908 7.098 7.289 7.481 7.676 7.871 8.069 8.268 8.468 8.669 8.87 9.072 9.272 9.469 9.66 9.844 10.014 10.167 10.293 10.387 10.44 10.45 10.449 10.44 10.419 10.388 10.347 10.297 10.238 10.17 10.096 10.014 9.926 9.831 9.731 9.627 9.517 9.404 9.286 9.166 9.042 8.916 8.788 8.658 8.527 8.394 8.26 8.125 7.99 7.854 7.719 7.583 7.448 7.314 7.18 7.046 6.914 6.782 6.652 6.523 6.395 6.268 6.143 6.02 5.898 5.777 5.658 5.541 5.426 5.312 5.2 5.09 4.982 4.875 4.771 4.668 4.567 4.467 4.37 4.274 4.18 4.088 3.998 3.909 3.822 3.737 3.654 3.572 3.492 3.413 3.336 3.261 3.187 3.115 3.044 2.975 2.907 2.841 2.776 2.713 2.651 2.59 2.531 2.473 2.416 2.36 2.306 2.253 2.201 2.15 2.1 2.052 2.004 1.958 1.912 1.868 1.825 1.782 1.741 1.701 1.661 1.623 1.585 1.548 1.512 1.477 1.442 1.409 1.376 1.344 1.312 1.282 1.252 1.223 1.194 1.166 1.139 1.112 1.086 1.061 1.036 1.012 0.988 0.965 0.943 0.921 0.899 0.878 0.858 0.837 0.818 0.799 0.78 0.762 0.744 0.726 0.709 0.693

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.029" PeakHeight="110.0" Num="3" Error="0.0">
-30.219 12.738 -2.978
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.029" EndFrequency="10.45" PeakHeight="323.304" Num="5" zHalfNm="232.614" Error="1.799">
-177.405 -41.3 16.956 -1.951 -0.339
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.265" Depth="0.122"/>
<TopsideChapman PeakHeight="323.304" PeakDensity="1354869.8" PeakScaleHeight="65.822" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
