<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-09 -282 19:00:00.000"
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" >
2026.10.09 (282) 19:00:00</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">
FF202628210091900009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.515" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.293" 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="11.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="10.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="530.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.605" 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="377.189" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="269.768" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.383" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="145.717" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.209" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.956" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="173.310" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="108">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 320.000 320.000 322.500 325.000 320.000 320.000 320.000 320.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 345.000 335.000 335.000 335.000 337.500 340.000 340.000 340.000 345.000 345.000 345.000 347.500 350.000 352.500 355.000 357.500 360.000 362.500 365.000 367.500 370.000 372.500 375.000 377.500 380.000 382.500 385.000 387.500 390.000 392.500 395.000 397.500 400.000 402.500 405.000 407.500 410.000 412.500 415.000 417.500 420.000 422.500 425.000 427.500 430.000 432.500 435.000 437.500 440.000 442.500 445.000 447.500 450.000 452.500 455.000 457.500 460.000 462.500 465.000 467.500 470.000 472.500 475.000 477.500 480.000 482.500 485.000 487.500 490.000 492.500 495.000 497.500 500.000 502.500 505.000 507.500 510.000 512.500 515.000 517.500 520.000 522.500 525.000 527.500 530.000 540.000 550.000 561.396 575.916 595.049 621.411 660.049
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 63 69 0 63 72 57 66 51 72 66 72 0 66 66 69 51 72 72 69 66 0 0 0 69 69 75 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 57 54 57 0 57 45 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 -1.171875 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 0.390625 0.390625 -1.171875 -1.953125 -1.171875 -1.171875 -0.390625 -1.171875 -1.953125 -1.171875 -0.390625 -0.390625 2.734375 -1.953125 1.953125 -2.734375 -0.390625 1.953125 1.171875 -2.734375 -2.734375 -1.953125 2.734375 1.953125 0.390625 -2.734375 -1.953125 -1.171875 0.390625 -1.171875 -2.734375 0.390625 0.390625 -0.390625 2.734375 -2.734375 2.734375 -1.171875 0.390625 -1.953125 -1.953125 -1.953125 -0.390625 2.734375 1.953125 -2.734375 -1.953125 -2.734375 -1.171875 0.390625 2.734375 2.734375 1.953125 2.734375 -1.953125 -0.390625 0.390625 1.953125 1.171875 1.953125 2.734375 0.390625 -1.171875 1.171875 1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -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" >
89.619 90.0 95.0 100.0 105.0 110.0 115.0 115.062 120.0 120.124 125.0 125.186 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 377.189 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.232 1.749 2.255 2.521 2.605 2.484 2.481 2.481 2.481 2.6 2.605 2.78 2.954 3.126 3.297 3.469 3.642 3.818 3.995 4.175 4.357 4.54 4.726 4.913 5.101 5.29 5.48 5.67 5.861 6.053 6.244 6.436 6.627 6.819 7.01 7.201 7.392 7.583 7.773 7.964 8.154 8.343 8.533 8.722 8.91 9.098 9.284 9.47 9.654 9.835 10.015 10.19 10.36 10.525 10.68 10.824 10.954 11.066 11.155 11.216 11.247 11.25 11.249 11.239 11.221 11.195 11.162 11.121 11.073 11.018 10.957 10.891 10.819 10.741 10.659 10.572 10.481 10.387 10.288 10.187 10.082 9.974 9.865 9.753 9.638 9.523 9.405 9.287 9.167 9.046 8.924 8.802 8.679 8.556 8.433 8.31 8.187 8.064 7.941 7.819 7.697 7.576 7.456 7.336 7.217 7.099 6.982 6.867 6.752 6.638 6.525 6.414 6.303 6.194 6.086 5.98 5.875 5.771 5.668 5.567 5.467 5.369 5.272 5.176 5.082 4.989 4.898 4.807 4.719 4.631 4.545 4.461 4.378 4.296 4.215 4.136 4.058 3.982 3.906 3.832 3.759 3.688 3.618 3.549 3.481 3.414 3.349 3.285 3.221 3.159 3.099 3.039 2.98 2.922 2.866 2.81 2.756 2.702 2.65 2.598 2.548 2.498 2.45 2.402 2.355 2.309 2.264 2.22 2.176 2.133 2.092 2.051 2.011 1.971 1.932 1.894 1.857 1.821 1.785 1.75 1.715 1.682 1.649 1.616 1.584 1.553 1.522

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.605" PeakHeight="110.0" Num="3" Error="0.0">
-29.825 12.169 -2.725
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.605" EndFrequency="11.25" PeakHeight="377.189" Num="5" zHalfNm="269.768" Error="2.335">
-226.783 -41.532 20.62 -5.735 1.427
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="15.186" Depth="0.124"/>
<TopsideChapman PeakHeight="377.189" PeakDensity="1570254.4" PeakScaleHeight="77.956" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
