<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 16:20:00.000"
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" >
2026.10.11 (284) 16:20:00</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">
FF202628410111620009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.486" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.834" 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="12.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="350.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="350.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.305" 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="4.321" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="395.465" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="289.112" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.491" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="144.202" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="64.764" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.853" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="190.730" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="124">
<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 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
350.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 390.000 390.000 390.000 391.338 392.676 394.014 395.352 396.690 398.028 399.366 400.704 402.042 403.380 404.718 406.056 407.394 408.732 410.070 411.408 412.746 414.085 415.423 416.761 418.099 419.437 420.775 422.113 423.451 424.789 426.127 427.465 428.803 430.141 431.479 432.817 434.155 435.493 436.831 438.169 439.507 440.845 442.183 443.521 444.859 446.197 447.535 448.873 450.211 451.549 452.887 454.225 455.563 456.901 458.239 459.577 460.915 462.254 463.592 464.930 466.268 467.606 468.944 470.282 471.620 472.958 474.296 475.634 476.972 478.310 479.648 480.986 482.324 483.662 485.000 485.000 486.667 488.333 490.000 495.000 500.000 500.000 505.000 505.000 505.000 510.000 515.000 518.181 521.732 525.719 530.230 535.374 541.294 548.181 556.294 565.989 577.782 592.435 611.132 635.816 669.911 720.064
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 60 60 63 63 66 63 63 66 60 60 63 63 0 69 69 0 66 66 63 0 69 66 66 69 69 0 0 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 45 48 0 0 54 51 48 54 54 57 57 54 60 63 63 63 63 63 63 63 63 60 60 60 54 42 0 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 -1.171875 -1.171875 -1.953125 0.390625 -0.390625 1.171875 -1.171875 1.171875 0.390625 -0.390625 -1.953125 -2.734375 -2.734375 -0.390625 -0.390625 1.953125 -0.390625 2.734375 0.390625 2.734375 1.171875 -1.953125 -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 -1.171875 -0.390625 -1.171875 -0.390625 2.734375 -0.390625 1.953125 2.734375 -0.390625 -0.390625 -1.953125 -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
</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" >
89.496 90.0 95.0 100.0 105.0 110.0 111.901 113.801 115.0 115.702 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 395.465 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.223 2.86 3.197 3.305 3.182 3.182 3.26 3.305 3.453 3.624 3.79 3.95 4.104 4.253 4.398 4.539 4.677 4.813 4.947 5.08 5.211 5.343 5.474 5.605 5.737 5.869 6.003 6.138 6.274 6.412 6.552 6.695 6.841 6.989 7.141 7.296 7.456 7.62 7.788 7.962 8.142 8.328 8.52 8.719 8.925 9.137 9.357 9.582 9.812 10.045 10.279 10.508 10.731 10.943 11.14 11.319 11.478 11.616 11.733 11.828 11.902 11.955 11.988 12.0 12.0 11.997 11.985 11.965 11.938 11.904 11.862 11.814 11.76 11.7 11.634 11.563 11.487 11.407 11.322 11.233 11.14 11.043 10.943 10.841 10.735 10.627 10.516 10.404 10.289 10.173 10.056 9.937 9.817 9.696 9.574 9.452 9.329 9.205 9.082 8.958 8.835 8.711 8.588 8.465 8.342 8.22 8.098 7.977 7.857 7.738 7.619 7.501 7.384 7.268 7.154 7.04 6.927 6.815 6.705 6.596 6.487 6.381 6.275 6.171 6.067 5.966 5.865 5.766 5.668 5.571 5.476 5.382 5.289 5.198 5.108 5.019 4.931 4.845 4.76 4.677 4.594 4.513 4.434 4.355 4.278 4.202 4.127 4.053 3.981 3.909 3.839 3.77 3.702 3.636 3.57 3.505 3.442 3.38 3.318 3.258 3.199 3.141 3.083 3.027 2.972 2.918 2.864 2.812 2.761 2.71 2.66 2.611 2.564 2.516 2.47 2.425 2.38 2.336 2.293 2.251 2.209 2.169 2.129 2.089 2.051 2.013

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.305" PeakHeight="110.0" Num="3" Error="0.0">
-30.439 13.06 -3.125
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.305" EndFrequency="12.0" PeakHeight="395.465" Num="5" zHalfNm="289.112" Error="3.524">
-238.809 -52.995 4.7 10.757 -3.416
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.702" Depth="0.123"/>
<TopsideChapman PeakHeight="395.465" PeakDensity="1786600.5" PeakScaleHeight="82.853" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
