<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 11:10:00.000"
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" >
2026.10.16 (289) 11:10:00</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">
FF202628910161110009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.971" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.458" 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="10.650" 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="9.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="395.844" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.883" 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="/" />
<URSI ID="92" Val="296.432" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="220.609" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.964" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="100.369" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="31.878" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="55.852" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="128.770" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.290" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="90">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
285.000 285.000 285.714 286.429 287.143 287.857 288.571 289.286 290.000 290.000 291.667 293.333 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 296.250 297.500 298.750 300.000 300.000 300.000 301.743 303.485 305.228 306.970 308.713 310.456 312.198 313.941 315.684 317.426 319.169 320.911 322.654 324.397 326.139 327.882 329.625 331.367 333.110 334.852 336.595 338.338 340.080 341.823 343.565 345.308 347.051 348.793 350.536 352.279 354.021 355.764 357.506 359.249 360.992 362.734 364.477 366.220 367.962 369.705 371.447 373.190 374.933 376.675 378.418 380.160 381.903 383.646 385.388 387.131 388.874 390.616 392.359 394.101 395.844 399.444 403.716 410.000 415.000 425.000 435.000 450.000 465.000 498.062
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 0 0 0 0 0 0 66 69 51 57 60 63 0 72 0 0 0 0 0 0 0 72 69 69 0 66 48 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 -1.171875 0.390625 0.390625 0.390625 -0.390625 1.953125 1.953125 0.390625 -0.390625 -1.171875 2.734375 0.390625 -2.734375 -0.390625 0.390625 1.953125 -0.390625 1.171875 -0.390625 2.734375 -2.734375 1.953125 0.390625 -1.171875 1.953125 -0.390625 0.390625 1.171875 -0.390625 1.953125 1.953125 0.390625 2.734375 1.953125 -2.734375 -1.171875 -0.390625 1.953125 -1.171875 -1.171875 -0.390625 -2.734375 -2.734375 0.390625 1.171875 -1.171875 1.171875 -0.390625 1.171875 -1.171875 -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" >
89.565 90.0 95.0 100.0 105.0 110.0 113.748 115.0 117.496 120.0 121.244 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 296.432 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.938 2.496 2.789 2.883 2.761 2.761 2.761 2.843 2.883 3.064 3.304 3.538 3.766 3.988 4.206 4.42 4.632 4.842 5.051 5.26 5.469 5.68 5.892 6.106 6.323 6.542 6.765 6.991 7.22 7.452 7.689 7.928 8.17 8.415 8.66 8.904 9.144 9.377 9.597 9.798 9.972 10.111 10.205 10.248 10.25 10.246 10.227 10.194 10.147 10.088 10.017 9.935 9.843 9.742 9.633 9.516 9.393 9.264 9.129 8.99 8.847 8.701 8.552 8.4 8.247 8.092 7.936 7.78 7.623 7.467 7.31 7.155 7.0 6.846 6.694 6.543 6.393 6.246 6.1 5.956 5.815 5.675 5.538 5.403 5.27 5.14 5.012 4.887 4.764 4.643 4.525 4.41 4.297 4.186 4.078 3.972 3.868 3.767 3.669 3.572 3.478 3.386 3.297 3.209 3.124 3.041 2.959 2.88 2.803 2.728 2.654 2.583 2.513 2.446 2.379 2.315 2.252 2.191 2.132 2.074 2.018 1.963 1.909 1.857 1.807 1.757 1.709 1.663 1.617 1.573 1.53 1.488 1.447 1.408 1.369 1.332 1.295 1.26 1.225 1.191 1.159 1.127 1.096 1.066 1.036 1.008 0.98 0.953 0.927 0.902 0.877 0.853 0.829 0.806 0.784 0.763 0.742 0.721 0.701 0.682 0.663 0.645 0.627 0.61 0.593 0.577 0.561 0.545 0.53 0.516 0.502 0.488 0.474 0.461 0.448 0.436 0.424 0.412 0.401 0.39 0.379 0.369 0.359 0.349 0.339 0.33

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.883" PeakHeight="110.0" Num="3" Error="0.0">
-30.095 12.555 -2.895
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.883" EndFrequency="10.25" PeakHeight="296.432" Num="5" zHalfNm="220.609" Error="1.685">
-153.281 -33.313 11.959 -0.012 -0.541
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.244" Depth="0.122"/>
<TopsideChapman PeakHeight="296.432" PeakDensity="1303505.0" PeakScaleHeight="55.852" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
