<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 13:00:00.000"
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" >
2026.10.16 (289) 13:00:00</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">
FF202628910161300009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.776" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.477" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.100" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="440.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.289" 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="4.314" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="332.149" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="247.498" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.113" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="112.131" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.570" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="63.614" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="151.270" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.170" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="116">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 315.000 313.333 311.667 310.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 315.000 315.000 320.000 325.000 325.000 326.429 327.857 329.286 330.714 332.143 333.571 335.000 336.429 337.857 339.286 340.714 342.143 343.571 345.000 346.429 347.857 349.286 350.714 352.143 353.571 355.000 356.429 357.857 359.286 360.714 362.143 363.571 365.000 366.429 367.857 369.286 370.714 372.143 373.571 375.000 376.429 377.857 379.286 380.714 382.143 383.571 385.000 386.429 387.857 389.286 390.714 392.143 393.571 395.000 396.429 397.857 399.286 400.714 402.143 403.571 405.000 406.429 407.857 409.286 410.714 412.143 413.571 415.000 416.429 417.857 419.286 420.714 422.143 423.571 425.000 426.429 427.857 429.286 430.714 432.143 433.571 435.000 440.000 440.000 440.000 445.000 450.000 455.000 460.163 466.334 473.840 483.166 495.066 510.776 532.476 564.397
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 69 0 0 54 66 66 66 63 63 66 66 66 63 63 0 63 63 63 63 66 60 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 0 0 0 0 0 0 0 0 0 0 54 54 63 57 48 54 48 54 54 51 54 51 51 48 51
</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 -1.953125 2.734375 0.390625 -2.734375 2.734375 0.390625 2.734375 2.734375 -0.390625 1.953125 -0.390625 -1.171875 0.390625 -0.390625 2.734375 -0.390625 2.734375 0.390625 -0.390625 -2.734375 1.171875 -1.953125 0.390625 -0.390625 -1.953125 1.953125 1.171875 -2.734375 -2.734375 0.390625 1.171875 0.390625 -1.953125 2.734375 1.171875 -1.171875 -0.390625 -2.734375 2.734375 -0.390625 -1.953125 -2.734375 2.734375 1.171875 -1.953125 2.734375 2.734375 -0.390625 1.171875 1.953125 -2.734375 -1.171875 1.171875 0.390625 1.953125 0.390625 0.390625 -2.734375 0.390625 2.734375 0.390625 0.390625 -1.171875 0.390625 -1.953125 -1.171875 -1.171875 2.734375 2.734375 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 0.390625 0.390625 0.390625 0.390625 0.390625 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" >
89.5 90.0 95.0 100.0 105.0 110.0 111.967 113.934 115.0 115.901 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 332.149 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.212 2.846 3.182 3.289 3.167 3.167 3.233 3.289 3.477 3.69 3.89 4.08 4.264 4.443 4.619 4.792 4.964 5.136 5.307 5.479 5.652 5.826 6.002 6.18 6.361 6.544 6.731 6.922 7.116 7.315 7.519 7.728 7.942 8.161 8.387 8.618 8.855 9.099 9.347 9.599 9.855 10.111 10.365 10.613 10.85 11.07 11.267 11.433 11.563 11.652 11.696 11.7 11.698 11.683 11.655 11.615 11.564 11.501 11.429 11.347 11.256 11.157 11.051 10.937 10.818 10.693 10.562 10.428 10.289 10.146 10.001 9.852 9.702 9.549 9.395 9.24 9.084 8.928 8.771 8.614 8.457 8.3 8.145 7.989 7.835 7.682 7.531 7.38 7.231 7.084 6.938 6.794 6.652 6.512 6.374 6.238 6.103 5.971 5.841 5.714 5.588 5.464 5.343 5.224 5.107 4.992 4.879 4.769 4.66 4.554 4.45 4.348 4.248 4.15 4.054 3.96 3.868 3.778 3.689 3.603 3.519 3.436 3.356 3.277 3.199 3.124 3.05 2.978 2.907 2.838 2.771 2.705 2.641 2.578 2.516 2.456 2.398 2.34 2.284 2.23 2.176 2.124 2.073 2.024 1.975 1.928 1.881 1.836 1.792 1.749 1.707 1.666 1.625 1.586 1.548 1.511 1.474 1.439 1.404 1.37 1.337 1.305 1.273 1.242 1.212 1.183 1.155 1.127 1.099 1.073 1.047 1.022 0.997 0.973 0.949 0.926 0.904 0.882 0.86 0.84 0.819 0.799 0.78 0.761 0.743 0.725

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.289" PeakHeight="110.0" Num="3" Error="0.0">
-30.426 13.042 -3.116
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.289" EndFrequency="11.7" PeakHeight="332.149" Num="5" zHalfNm="247.498" Error="2.482">
-180.996 -48.709 11.136 3.223 -0.902
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.901" Depth="0.122"/>
<TopsideChapman PeakHeight="332.149" PeakDensity="1698387.1" PeakScaleHeight="63.614" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
