<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 13:30:00.000"
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" >
2026.10.16 (289) 13:30:00</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">
FF202628910161330009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.636" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.183" 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="11.750" 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="11.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.346" 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="/" />
<Modeled Name="foF1p" Val="4.340" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="350.196" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="248.374" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.261" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="134.266" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.288" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.242" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="172.100" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="112">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.000 310.000 310.000 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 327.051 329.103 331.154 333.205 335.256 337.308 339.359 341.410 343.462 345.513 347.564 349.615 351.667 353.718 355.769 357.821 359.872 361.923 363.974 366.026 368.077 370.128 372.179 374.231 376.282 378.333 380.385 382.436 384.487 386.538 388.590 390.641 392.692 394.744 396.795 398.846 400.897 402.949 405.000 407.051 409.103 411.154 413.205 415.256 417.308 419.359 421.410 423.462 425.513 427.564 429.615 431.667 433.718 435.769 437.821 439.872 441.923 443.974 446.026 448.077 450.128 452.179 454.231 456.282 458.333 460.385 462.436 464.487 466.538 468.590 470.641 472.692 474.744 476.795 478.846 480.897 482.949 485.000 490.000 500.000 505.000 513.393 524.104 538.246 557.783 586.530 633.008
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 0 0 0 0 72 69 69 72 75 78 78 75 72 69 69 72 72 69 66 69 66 0 72 72 0 0 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 51 54 57 57 57 54 57 51 48 42
</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 -1.953125 -1.953125 2.734375 -0.390625 0.390625 1.953125 1.171875 -0.390625 2.734375 0.390625 2.734375 -2.734375 -0.390625 1.171875 1.953125 1.171875 -1.953125 0.390625 -1.171875 1.171875 -2.734375 -0.390625 -1.171875 -1.953125 2.734375 1.171875 1.953125 -1.953125 1.953125 -1.953125 2.734375 -1.171875 -2.734375 0.390625 2.734375 -1.953125 -1.953125 1.953125 0.390625 1.953125 -0.390625 1.171875 -1.953125 -1.171875 1.171875 -1.171875 2.734375 0.390625 -1.953125 -1.953125 2.734375 -1.171875 -1.953125 2.734375 -2.734375 2.734375 -0.390625 -1.953125 1.171875 1.953125 0.390625 0.390625 -1.171875 -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
</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" >
89.491 90.0 95.0 100.0 105.0 110.0 111.732 113.464 115.0 115.196 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 350.196 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.251 2.896 3.237 3.346 3.223 3.223 3.332 3.346 3.534 3.723 3.905 4.082 4.257 4.429 4.6 4.769 4.938 5.107 5.276 5.445 5.615 5.786 5.958 6.131 6.306 6.482 6.66 6.84 7.022 7.206 7.393 7.581 7.772 7.965 8.16 8.358 8.557 8.759 8.962 9.166 9.371 9.576 9.781 9.984 10.184 10.379 10.567 10.746 10.912 11.063 11.194 11.301 11.382 11.432 11.45 11.45 11.446 11.432 11.409 11.377 11.337 11.289 11.234 11.172 11.104 11.029 10.949 10.863 10.772 10.677 10.577 10.474 10.367 10.256 10.143 10.027 9.908 9.787 9.665 9.541 9.415 9.289 9.161 9.032 8.903 8.774 8.644 8.514 8.384 8.254 8.125 7.996 7.867 7.74 7.612 7.486 7.361 7.236 7.113 6.99 6.869 6.749 6.63 6.513 6.397 6.282 6.169 6.057 5.946 5.837 5.73 5.624 5.519 5.416 5.314 5.214 5.116 5.019 4.923 4.829 4.737 4.646 4.556 4.468 4.382 4.297 4.213 4.131 4.05 3.971 3.893 3.816 3.741 3.667 3.595 3.523 3.454 3.385 3.318 3.252 3.187 3.123 3.061 2.999 2.939 2.88 2.823 2.766 2.71 2.656 2.602 2.55 2.498 2.448 2.398 2.35 2.302 2.256 2.21 2.165 2.121 2.078 2.036 1.995 1.954 1.914 1.875 1.837 1.8 1.763 1.727 1.692 1.657 1.624 1.59 1.558 1.526 1.495 1.465 1.435 1.405 1.377 1.348 1.321 1.294 1.267

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.346" PeakHeight="110.0" Num="3" Error="0.0">
-30.469 13.105 -3.145
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.346" EndFrequency="11.45" PeakHeight="350.196" Num="5" zHalfNm="248.374" Error="2.251">
-203.47 -44.992 13.422 0.252 -0.212
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.196" Depth="0.123"/>
<TopsideChapman PeakHeight="350.196" PeakDensity="1626581.9" PeakScaleHeight="75.242" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
