<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 20:00:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.10.13 (286) 20:00:00</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">
FF202628610132000009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.601" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.559" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.986" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="375.745" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="284.105" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.464" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="128.441" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.013" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.968" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="147.680" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.430" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="121">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 305.000 305.000 306.667 308.333 310.000 310.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 345.000 345.000 345.000 346.667 348.333 350.000 351.899 353.797 355.696 357.595 359.494 361.392 363.291 365.190 367.089 368.987 370.886 372.785 374.684 376.582 378.481 380.380 382.278 384.177 386.076 387.975 389.873 391.772 393.671 395.570 397.468 399.367 401.266 403.165 405.063 406.962 408.861 410.759 412.658 414.557 416.456 418.354 420.253 422.152 424.051 425.949 427.848 429.747 431.646 433.544 435.443 437.342 439.241 441.139 443.038 444.937 446.835 448.734 450.633 452.532 454.430 456.329 458.228 460.127 462.025 463.924 465.823 467.722 469.620 471.519 473.418 475.316 477.215 479.114 481.013 482.911 484.810 486.709 488.608 490.506 492.405 494.304 496.203 498.101 500.000 500.000 505.000 515.000 525.000 535.000 547.907 565.014 588.766 623.971
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 78 78 0 48 78 78 66 0 72 75 66 72 75 75 72 75 75 75 75 75 60 69 75 75 75 75 60 63 72 0 0 72 0 0 0 0 0 0 0 0 0 0 0 0 45 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 57 60 60 60 60 63 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 1.171875 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.953125 -1.953125 1.171875 2.734375 -2.734375 -1.171875 0.390625 2.734375 2.734375 -0.390625 1.953125 2.734375 2.734375 -1.171875 -0.390625 -2.734375 -2.734375 1.171875 -1.953125 -0.390625 -0.390625 2.734375 0.390625 2.734375 2.734375 -1.171875 2.734375 -0.390625 1.953125 -2.734375 -2.734375 -1.171875 2.734375 2.734375 1.953125 -1.171875 -0.390625 2.734375 1.171875 2.734375 2.734375 0.390625 2.734375 -1.953125 -2.734375 1.171875 1.953125 1.953125 -0.390625 2.734375 0.390625 0.390625 -1.953125 1.953125 -0.390625 -1.953125 -1.953125 -2.734375 -0.390625 -1.953125 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 1.171875
</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" >
89.764 90.0 95.0 100.0 105.0 110.0 115.0 118.29 120.0 125.0 126.58 130.0 134.87 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 375.745 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22 1.331 1.72 1.922 1.986 1.938 1.853 1.853 1.853 1.853 1.908 1.986 1.99 2.163 2.336 2.512 2.693 2.879 3.069 3.264 3.463 3.666 3.873 4.084 4.296 4.512 4.729 4.948 5.169 5.391 5.614 5.837 6.062 6.288 6.514 6.741 6.969 7.198 7.427 7.657 7.887 8.118 8.35 8.582 8.815 9.047 9.28 9.512 9.743 9.973 10.2 10.423 10.641 10.851 11.05 11.235 11.4 11.541 11.649 11.721 11.75 11.75 11.745 11.729 11.7 11.661 11.611 11.551 11.482 11.405 11.319 11.226 11.127 11.02 10.908 10.791 10.669 10.542 10.412 10.278 10.141 10.001 9.859 9.715 9.569 9.422 9.274 9.125 8.976 8.826 8.676 8.527 8.377 8.228 8.08 7.933 7.786 7.641 7.497 7.354 7.212 7.072 6.934 6.797 6.662 6.528 6.396 6.266 6.138 6.012 5.888 5.766 5.645 5.527 5.41 5.296 5.183 5.072 4.964 4.857 4.752 4.65 4.549 4.45 4.353 4.257 4.164 4.073 3.983 3.895 3.809 3.724 3.642 3.561 3.481 3.404 3.327 3.253 3.18 3.109 3.039 2.97 2.904 2.838 2.774 2.711 2.65 2.59 2.531 2.474 2.418 2.363 2.309 2.257 2.205 2.155 2.106 2.058 2.011 1.965 1.92 1.876 1.834 1.792 1.751 1.711 1.671 1.633 1.596 1.559 1.524 1.489 1.454 1.421 1.389 1.357 1.326 1.295 1.265 1.236 1.208 1.18 1.153 1.127 1.101 1.075 1.051

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.986" PeakHeight="110.0" Num="3" Error="0.0">
-29.048 11.089 -2.277
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.986" EndFrequency="11.75" PeakHeight="375.745" Num="5" zHalfNm="284.105" Error="1.838">
-218.692 -37.967 20.713 -6.147 1.218
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="24.87" Depth="0.133"/>
<TopsideChapman PeakHeight="375.745" PeakDensity="1712934.2" PeakScaleHeight="66.968" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
