<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 18:30:00.000"
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" >
2026.10.17 (290) 18:30:00</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">
FF202629010171830009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.684" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.676" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.100" 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="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="445.000" 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="2.793" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="359.451" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="263.253" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.276" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="133.127" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.956" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="73.504" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="157.810" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.500" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="119">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 336.429 337.857 339.286 340.714 342.143 343.571 345.000 346.429 347.857 349.286 350.714 352.143 353.571 355.000 356.429 357.857 359.286 360.714 362.143 363.571 365.000 366.429 367.857 369.286 370.714 372.143 373.571 375.000 376.429 377.857 379.286 380.714 382.143 383.571 385.000 386.429 387.857 389.286 390.714 392.143 393.571 395.000 396.429 397.857 399.286 400.714 402.143 403.571 405.000 406.429 407.857 409.286 410.714 412.143 413.571 415.000 416.429 417.857 419.286 420.714 422.143 423.571 425.000 426.429 427.857 429.286 430.714 432.143 433.571 435.000 436.429 437.857 439.286 440.714 442.143 443.571 445.000 450.000 460.000 463.278 466.942 471.062 475.730 481.064 487.217 494.392 502.867 513.032 525.448 540.956 560.873 587.394 624.454 679.894
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 69 66 66 66 72 78 78 75 72 72 75 69 63 69 72 78 75 75 75 0 72 75 75 48 66 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 63 54 54 57 66 60 60 63 63 66 63 60 60 63 60 60 54 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 2.734375 0.390625 0.390625 -0.390625 -1.171875 -2.734375 -0.390625 -0.390625 2.734375 2.734375 -0.390625 1.953125 2.734375 -1.171875 1.953125 0.390625 0.390625 2.734375 1.953125 -1.171875 -2.734375 -0.390625 0.390625 2.734375 1.953125 1.171875 0.390625 -2.734375 2.734375 -2.734375 -2.734375 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 1.171875 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" >
89.581 90.0 95.0 100.0 105.0 110.0 114.162 115.0 118.325 120.0 122.487 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 359.451 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 1.877 2.418 2.702 2.793 2.671 2.671 2.671 2.72 2.793 2.877 3.057 3.245 3.439 3.633 3.826 4.016 4.204 4.39 4.574 4.758 4.941 5.124 5.307 5.492 5.679 5.867 6.058 6.252 6.449 6.65 6.855 7.064 7.279 7.498 7.722 7.952 8.188 8.429 8.674 8.924 9.176 9.431 9.685 9.936 10.182 10.419 10.645 10.856 11.05 11.224 11.377 11.508 11.615 11.698 11.756 11.79 11.8 11.8 11.794 11.777 11.751 11.715 11.671 11.619 11.558 11.491 11.416 11.335 11.248 11.155 11.057 10.954 10.847 10.736 10.621 10.502 10.381 10.257 10.131 10.002 9.872 9.74 9.606 9.472 9.336 9.2 9.064 8.927 8.79 8.653 8.516 8.379 8.243 8.108 7.973 7.839 7.705 7.573 7.442 7.312 7.183 7.055 6.929 6.804 6.681 6.558 6.438 6.319 6.201 6.085 5.971 5.858 5.746 5.637 5.529 5.423 5.318 5.215 5.113 5.014 4.915 4.819 4.724 4.631 4.539 4.449 4.36 4.273 4.188 4.104 4.021 3.941 3.861 3.783 3.707 3.631 3.558 3.485 3.414 3.345 3.277 3.21 3.144 3.08 3.016 2.954 2.894 2.834 2.776 2.719 2.663 2.608 2.554 2.501 2.449 2.398 2.349 2.3 2.252 2.206 2.16 2.115 2.071 2.028 1.986 1.944 1.904 1.864 1.825 1.787 1.75 1.713 1.678 1.643 1.608 1.575 1.542 1.51 1.478 1.447 1.417 1.387 1.358 1.33 1.302 1.275

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.793" PeakHeight="110.0" Num="3" Error="0.0">
-30.012 12.435 -2.842
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.793" EndFrequency="11.8" PeakHeight="359.451" Num="5" zHalfNm="263.253" Error="3.292">
-215.01 -30.093 5.833 4.614 -2.308
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="12.487" Depth="0.122"/>
<TopsideChapman PeakHeight="359.451" PeakDensity="1727543.4" PeakScaleHeight="73.504" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
