<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 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="18.0">
<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" >
2026.10.11 (284) 11:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628410111140009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.626" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.789" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="88" Val="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="501.159" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.027" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.187" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="338.770" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="235.410" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.970" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="134.859" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="41.475" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="73.995" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="167.180" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.370" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="96">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.45 5.5 5.55 5.6 5.65 5.7 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 300.000 303.333 306.667 310.000 310.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 338.077 341.154 344.231 347.308 350.385 353.462 356.539 359.616 362.693 365.770 368.847 371.924 375.001 378.078 381.155 384.232 387.309 390.386 393.463 396.540 399.617 402.694 405.771 408.848 411.925 415.002 418.079 421.156 424.234 427.311 430.388 433.465 436.542 439.619 442.696 445.773 448.850 451.927 455.004 458.081 461.158 464.235 467.312 470.389 473.466 476.543 479.620 482.697 485.774 488.851 491.928 495.005 498.082 501.159 504.236 520.000 540.000 565.000 596.426
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 57 0 69 72 69 66 66 0 66 63 57 0 0 60 69 63 60 72 69 69 72 72 66 72 72 72 66 72 72 69 0 69 72 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
</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 0.390625 0.390625 0.390625 -0.390625 1.171875 1.953125 -2.734375 2.734375 1.171875 1.171875 0.390625 1.171875 -0.390625 0.390625 1.171875 -2.734375 -1.953125 1.171875 1.953125 1.171875 -2.734375 -1.953125 2.734375 -1.953125 1.171875 -0.390625 1.953125 -1.953125 0.390625 -2.734375 -0.390625 -2.734375 -2.734375 -1.171875 0.390625 2.734375 -1.171875 0.390625 -2.734375 -0.390625 -2.734375 1.171875 2.734375 -0.390625 -0.390625 -1.953125 -1.171875 1.953125 1.953125 0.390625 -2.734375 1.953125 1.171875 -0.390625 -0.390625 1.171875 -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" >
89.54 90.0 95.0 100.0 105.0 110.0 113.098 115.0 116.197 119.295 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 338.77 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.035 2.62 2.929 3.027 2.905 2.905 2.905 3.027 3.057 3.253 3.43 3.601 3.769 3.937 4.106 4.277 4.451 4.627 4.806 4.987 5.17 5.354 5.54 5.727 5.913 6.099 6.285 6.47 6.654 6.836 7.018 7.198 7.376 7.554 7.73 7.904 8.077 8.249 8.419 8.588 8.756 8.921 9.084 9.245 9.402 9.554 9.7 9.836 9.959 10.063 10.142 10.189 10.2 10.2 10.193 10.178 10.154 10.123 10.084 10.038 9.986 9.927 9.863 9.793 9.718 9.638 9.554 9.465 9.373 9.277 9.178 9.077 8.973 8.866 8.758 8.647 8.535 8.422 8.307 8.192 8.076 7.959 7.841 7.724 7.606 7.489 7.371 7.254 7.137 7.02 6.905 6.789 6.675 6.561 6.448 6.337 6.226 6.116 6.007 5.9 5.794 5.688 5.585 5.482 5.381 5.281 5.182 5.085 4.989 4.895 4.802 4.71 4.62 4.531 4.444 4.358 4.273 4.19 4.108 4.027 3.948 3.87 3.794 3.718 3.645 3.572 3.501 3.431 3.362 3.295 3.229 3.164 3.1 3.037 2.976 2.916 2.857 2.799 2.742 2.686 2.631 2.578 2.525 2.474 2.423 2.373 2.325 2.277 2.23 2.185 2.14 2.096 2.053 2.01 1.969 1.928 1.889 1.85 1.811 1.774 1.737 1.701 1.666 1.632 1.598 1.565 1.532 1.501 1.47 1.439 1.409 1.38 1.351 1.323 1.296 1.269 1.243 1.217 1.191 1.167 1.142 1.119 1.095 1.073 1.05 1.028

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.027" PeakHeight="110.0" Num="3" Error="0.0">
-30.218 12.735 -2.977
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.027" EndFrequency="10.2" PeakHeight="338.77" Num="5" zHalfNm="235.41" Error="3.035">
-193.3 -40.838 18.486 -5.838 2.015
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.295" Depth="0.122"/>
<TopsideChapman PeakHeight="338.77" PeakDensity="1290818.9" PeakScaleHeight="73.995" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
