<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 15:20:00.000"
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: 50% PACIFIC flags: F2o cusp not found, 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) 15:20:00</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">
FF202628910161520009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.291" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.518" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="575.919" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.386" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.359" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="406.770" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="269.543" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.996" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="174.764" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.146" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="97.297" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="230.120" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="98">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 330.000 335.000 335.000 335.000 340.000 340.000 345.000 345.000 345.000 350.000 355.000 360.000 360.000 365.000 365.000 370.000 375.000 375.000 375.000 380.000 385.000 390.000 395.000 395.000 400.000 405.000 405.000 408.108 411.215 414.323 417.430 420.538 423.646 426.753 429.861 432.969 436.076 439.184 442.291 445.399 448.507 451.614 454.722 457.829 460.937 464.045 467.152 470.260 473.367 476.475 479.583 482.690 485.798 488.906 492.013 495.121 498.228 501.336 504.444 507.551 510.659 513.766 516.874 519.982 523.089 526.197 529.304 532.412 535.520 538.627 541.735 544.843 547.950 551.058 554.165 557.273 560.381 563.488 566.596 569.703 572.811 575.919 579.026 583.280 587.927 595.000 600.000 605.000 610.000 620.000 630.000 640.000 650.000 665.000 680.000 695.000 718.494
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 72 66 69 66 66 69 66 66 57 57 0 51 51 57 66 66 63 69 66 63 63 60 63 66 69 69 69 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
</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 -1.171875 -0.390625 -0.390625 1.953125 2.734375 -0.390625 -1.171875 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 -1.171875 -2.734375 -0.390625 0.390625 0.390625 -2.734375 -0.390625 -1.171875 -1.953125 1.953125 -0.390625 2.734375 0.390625 0.390625 -0.390625 2.734375 2.734375 -1.953125 -1.171875 2.734375 1.171875 0.390625 0.390625 1.953125 -1.953125 -2.734375 -2.734375 -1.953125 1.953125 -1.171875 -2.734375 -0.390625 -1.171875 1.171875 -2.734375 2.734375 0.390625 0.390625 -0.390625 -0.390625 1.953125 1.953125
</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" >
89.485 90.0 95.0 100.0 105.0 110.0 111.565 113.131 114.696 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 406.77 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.278 2.93 3.276 3.386 3.263 3.263 3.386 3.396 3.552 3.697 3.837 3.973 4.107 4.24 4.372 4.504 4.637 4.769 4.902 5.036 5.17 5.304 5.439 5.573 5.708 5.843 5.978 6.113 6.248 6.382 6.516 6.65 6.784 6.917 7.05 7.183 7.315 7.447 7.578 7.709 7.84 7.97 8.101 8.23 8.36 8.49 8.619 8.748 8.877 9.006 9.135 9.263 9.391 9.518 9.645 9.771 9.895 10.018 10.137 10.253 10.362 10.463 10.551 10.623 10.674 10.698 10.7 10.699 10.693 10.681 10.665 10.643 10.617 10.587 10.552 10.513 10.47 10.424 10.373 10.32 10.263 10.203 10.14 10.074 10.006 9.935 9.862 9.787 9.71 9.631 9.55 9.468 9.384 9.299 9.212 9.125 9.036 8.946 8.856 8.765 8.673 8.581 8.488 8.395 8.302 8.208 8.114 8.02 7.926 7.833 7.739 7.645 7.552 7.459 7.366 7.273 7.181 7.09 6.998 6.908 6.817 6.728 6.639 6.55 6.462 6.375 6.289 6.203 6.118 6.034 5.95 5.867 5.785 5.704 5.624 5.544 5.465 5.387 5.31 5.234 5.158 5.084 5.01 4.937 4.865 4.794 4.723 4.654 4.585 4.517 4.45 4.384 4.319 4.254 4.19 4.127 4.065 4.004 3.944 3.884 3.825 3.767 3.71 3.654 3.598 3.543 3.489 3.436 3.383 3.331 3.28 3.23 3.18 3.131 3.083 3.035 2.988 2.942 2.896 2.851 2.807 2.764 2.721 2.678 2.637 2.596

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.386" PeakHeight="110.0" Num="3" Error="0.0">
-30.497 13.147 -3.165
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.386" EndFrequency="10.7" PeakHeight="406.77" Num="5" zHalfNm="269.543" Error="2.518">
-249.428 -65.91 28.718 -7.48 2.026
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.696" Depth="0.123"/>
<TopsideChapman PeakHeight="406.77" PeakDensity="1420471.5" PeakScaleHeight="97.297" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
