<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-10 -283 16:00:00.000"
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="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 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" >
2026.10.10 (283) 16:00:00</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">
FF202628310101600009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.613" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.183" 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="11.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="11.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="3.343" 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="4.339" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="359.208" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.569" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.324" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="129.778" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.459" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="73.585" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="173.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.190" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="115">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 321.667 323.333 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 351.753 353.506 355.260 357.013 358.766 360.519 362.273 364.026 365.779 367.532 369.286 371.039 372.792 374.545 376.299 378.052 379.805 381.558 383.312 385.065 386.818 388.571 390.325 392.078 393.831 395.584 397.338 399.091 400.844 402.597 404.351 406.104 407.857 409.610 411.364 413.117 414.870 416.623 418.377 420.130 421.883 423.636 425.390 427.143 428.896 430.649 432.403 434.156 435.909 437.662 439.416 441.169 442.922 444.675 446.429 448.182 449.935 451.688 453.442 455.195 456.948 458.701 460.455 462.208 463.961 465.714 467.468 469.221 470.974 472.727 474.481 476.234 477.987 479.740 481.494 483.247 485.000 490.000 500.000 505.000 510.000 515.000 525.000 535.000 548.029 565.330 589.417 625.258
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 0 0 48 54 57 54 57 57 57 51 54 57 57 54 0 0 0 57 54 60 63 60 57 63 63 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 57 51 54 57 54 54 54 54 51 48 45
</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 -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 -1.953125 0.390625 -2.734375 2.734375 1.171875 1.953125 2.734375 -1.171875 1.171875 0.390625 1.171875 -1.953125 1.171875 2.734375 1.953125 -1.171875 1.171875 2.734375 -0.390625 2.734375 1.171875 1.171875 -1.953125 -1.953125 -0.390625 -0.390625 -0.390625 -1.171875 -2.734375 1.171875 2.734375 -0.390625 0.390625 0.390625 1.171875 1.171875 1.171875 0.390625 1.171875 1.171875 1.171875 0.390625 0.390625 1.171875 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" >
89.49 90.0 95.0 100.0 105.0 110.0 111.741 113.483 115.0 115.224 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 359.208 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.249 2.893 3.234 3.343 3.22 3.22 3.327 3.343 3.531 3.715 3.889 4.057 4.22 4.379 4.535 4.69 4.843 4.995 5.148 5.3 5.452 5.606 5.76 5.915 6.072 6.231 6.391 6.554 6.719 6.887 7.057 7.23 7.406 7.586 7.769 7.955 8.145 8.339 8.536 8.738 8.942 9.15 9.361 9.574 9.788 10.002 10.214 10.422 10.624 10.817 10.996 11.157 11.295 11.408 11.489 11.537 11.55 11.55 11.543 11.526 11.5 11.465 11.422 11.37 11.311 11.244 11.171 11.092 11.006 10.915 10.819 10.719 10.614 10.505 10.392 10.277 10.158 10.037 9.913 9.787 9.659 9.53 9.4 9.268 9.136 9.003 8.869 8.735 8.601 8.467 8.334 8.2 8.067 7.935 7.803 7.672 7.541 7.412 7.284 7.157 7.031 6.906 6.782 6.66 6.539 6.42 6.302 6.186 6.071 5.957 5.845 5.735 5.626 5.519 5.413 5.309 5.207 5.106 5.007 4.909 4.813 4.719 4.626 4.535 4.445 4.357 4.27 4.185 4.102 4.019 3.939 3.86 3.782 3.706 3.631 3.557 3.485 3.414 3.345 3.277 3.21 3.144 3.08 3.017 2.955 2.895 2.835 2.777 2.72 2.664 2.609 2.555 2.503 2.451 2.4 2.351 2.302 2.254 2.208 2.162 2.117 2.073 2.03 1.988 1.946 1.906 1.866 1.827 1.789 1.752 1.716 1.68 1.645 1.611 1.577 1.544 1.512 1.48 1.449 1.419 1.389 1.36 1.332 1.304 1.277 1.25

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.343" PeakHeight="110.0" Num="3" Error="0.0">
-30.467 13.101 -3.144
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.343" EndFrequency="11.55" PeakHeight="359.208" Num="5" zHalfNm="260.569" Error="2.174">
-204.889 -54.173 13.293 2.445 -0.66
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.224" Depth="0.123"/>
<TopsideChapman PeakHeight="359.208" PeakDensity="1655117.9" PeakScaleHeight="73.585" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
