<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 18:00:00.000"
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="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) 18:00:00</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">
FF202629010171800009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.486" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.088" 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="11.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="540.000" 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="2.957" 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="4.152" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="391.486" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="271.933" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.145" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="162.500" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.083" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="89.416" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="192.180" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.510" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="110">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 335.000 335.000 337.000 339.000 341.000 343.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 357.434 359.868 362.303 364.737 367.171 369.605 372.039 374.474 376.908 379.342 381.776 384.211 386.645 389.079 391.513 393.947 396.382 398.816 401.250 403.684 406.118 408.553 410.987 413.421 415.855 418.289 420.724 423.158 425.592 428.026 430.461 432.895 435.329 437.763 440.197 442.632 445.066 447.500 449.934 452.368 454.803 457.237 459.671 462.105 464.539 466.974 469.408 471.842 474.276 476.711 479.145 481.579 484.013 486.447 488.882 491.316 493.750 496.184 498.618 501.053 503.487 505.921 508.355 510.789 513.224 515.658 518.092 520.526 522.961 525.395 527.829 530.263 532.697 535.132 537.566 540.000 555.000 575.000 596.862 622.686 653.657 691.483 738.723
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 54 51 63 0 0 66 69 69 69 69 69 69 72 69 69 69 72 69 69 69 69 69 69 72 72 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 51 54 54 45 45 45 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 0.390625 1.953125 1.171875 1.171875 -2.734375 1.953125 2.734375 -1.953125 -1.171875 0.390625 -0.390625 -2.734375 -2.734375 1.953125 1.171875 2.734375 -2.734375 2.734375 2.734375 -0.390625 -2.734375 -1.171875 2.734375 1.171875 2.734375 -2.734375 0.390625 -1.953125 1.171875 -0.390625 -1.171875 2.734375 -0.390625 1.171875 2.734375 2.734375 1.953125 1.171875 -1.171875 1.953125 -1.171875 1.953125 -1.171875 -2.734375 0.390625 -0.390625 -1.953125 -1.953125 -1.171875 0.390625 0.390625 -0.390625 -1.953125 2.734375 -1.171875 0.390625 1.953125 -0.390625 0.390625 -1.171875 1.171875 1.171875 -2.734375 -2.734375 -0.390625 -0.390625 0.390625 -1.171875 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 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" >
89.553 90.0 95.0 100.0 105.0 110.0 113.411 115.0 116.822 120.0 120.233 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 391.486 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.988 2.56 2.861 2.957 2.835 2.835 2.835 2.949 2.957 3.113 3.276 3.439 3.6 3.761 3.92 4.079 4.238 4.395 4.553 4.711 4.869 5.028 5.187 5.347 5.508 5.67 5.834 5.998 6.164 6.332 6.502 6.673 6.846 7.02 7.197 7.375 7.555 7.736 7.919 8.104 8.289 8.476 8.663 8.85 9.037 9.223 9.407 9.59 9.769 9.943 10.113 10.276 10.432 10.579 10.716 10.841 10.953 11.052 11.135 11.202 11.252 11.285 11.299 11.3 11.298 11.29 11.276 11.255 11.228 11.195 11.157 11.114 11.066 11.013 10.955 10.893 10.827 10.758 10.684 10.608 10.528 10.445 10.36 10.271 10.181 10.088 9.994 9.897 9.799 9.699 9.598 9.496 9.392 9.288 9.183 9.077 8.97 8.863 8.756 8.648 8.54 8.432 8.325 8.217 8.109 8.002 7.895 7.788 7.682 7.576 7.47 7.366 7.262 7.158 7.055 6.954 6.852 6.752 6.652 6.554 6.456 6.359 6.263 6.169 6.075 5.982 5.89 5.799 5.709 5.62 5.532 5.446 5.36 5.275 5.192 5.109 5.028 4.947 4.868 4.79 4.712 4.636 4.561 4.487 4.414 4.342 4.271 4.201 4.132 4.064 3.997 3.931 3.866 3.802 3.739 3.677 3.616 3.555 3.496 3.438 3.38 3.324 3.268 3.213 3.159 3.106 3.054 3.002 2.951 2.902 2.853 2.804 2.757 2.71 2.664 2.619 2.574 2.531 2.488 2.445 2.404 2.363 2.322 2.283 2.244 2.206

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.957" PeakHeight="110.0" Num="3" Error="0.0">
-30.159 12.649 -2.937
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.957" EndFrequency="11.3" PeakHeight="391.486" Num="5" zHalfNm="271.933" Error="3.096">
-247.586 -34.772 10.696 1.077 -0.668
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.233" Depth="0.122"/>
<TopsideChapman PeakHeight="391.486" PeakDensity="1584243.1" PeakScaleHeight="89.416" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
