<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 20:40:00.000"
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) 20:40:00</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">
FF202628410112040009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.370" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.156" 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="12.650" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="550.000" 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="1.259" 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="/" />
<URSI ID="92" Val="445.739" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="344.362" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.314" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="146.697" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.065" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.219" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="159.030" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.580" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="130">
<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 12.05 12.1 12.15 12.2 12.25 12.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
350.000 350.000 355.000 355.000 355.000 355.000 355.000 360.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 380.000 385.000 385.000 385.000 390.000 390.000 395.000 395.000 400.000 400.000 400.000 405.000 410.000 411.558 413.117 414.675 416.234 417.792 419.351 420.909 422.468 424.026 425.584 427.143 428.701 430.260 431.818 433.377 434.935 436.494 438.052 439.610 441.169 442.727 444.286 445.844 447.403 448.961 450.519 452.078 453.636 455.195 456.753 458.312 459.870 461.429 462.987 464.545 466.104 467.662 469.221 470.779 472.338 473.896 475.455 477.013 478.571 480.130 481.688 483.247 484.805 486.364 487.922 489.481 491.039 492.597 494.156 495.714 497.273 498.831 500.390 501.948 503.506 505.065 506.623 508.182 509.740 511.299 512.857 514.416 515.974 517.532 519.091 520.649 522.208 523.766 525.325 526.883 528.442 530.000 530.000 535.000 537.500 540.000 545.000 545.000 550.000 550.000 550.000 560.000 560.000 565.000 570.000 575.000 580.000 585.000 593.750 602.500 611.250 620.000 630.000 645.000 670.000 695.000 733.311
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 84 78 0 69 0 75 69 78 78 72 75 75 75 75 72 60 69 75 72 75 69 72 60 66 72 72 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 0 0 60 60 57 0 57 51 60 57 60 60 60 63 0 63 63 60 60 57 0 54 51 51 51 51 51 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 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.063 95.0 100.0 105.0 110.0 115.0 120.0 123.269 125.0 130.0 135.0 136.539 140.0 145.0 149.808 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 445.739 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.84 1.091 1.219 1.259 1.237 1.169 1.097 1.097 1.097 1.097 1.097 1.139 1.2 1.259 1.263 1.365 1.475 1.592 1.717 1.849 1.989 2.136 2.289 2.449 2.614 2.784 2.959 3.138 3.321 3.508 3.698 3.892 4.088 4.287 4.489 4.694 4.901 5.11 5.322 5.535 5.751 5.969 6.19 6.412 6.636 6.862 7.09 7.32 7.551 7.784 8.018 8.254 8.49 8.728 8.966 9.203 9.441 9.678 9.913 10.146 10.376 10.601 10.821 11.035 11.239 11.433 11.613 11.779 11.926 12.052 12.155 12.232 12.28 12.3 12.3 12.296 12.282 12.259 12.226 12.184 12.133 12.075 12.009 11.936 11.857 11.771 11.679 11.582 11.48 11.374 11.263 11.148 11.03 10.908 10.784 10.657 10.527 10.396 10.263 10.128 9.992 9.855 9.717 9.578 9.439 9.299 9.16 9.02 8.881 8.742 8.603 8.465 8.327 8.191 8.055 7.92 7.786 7.653 7.522 7.391 7.262 7.135 7.008 6.883 6.76 6.638 6.518 6.399 6.281 6.166 6.051 5.939 5.828 5.719 5.611 5.505 5.4 5.298 5.197 5.097 4.999 4.903 4.808 4.715 4.623 4.533 4.445 4.358 4.273 4.189 4.106 4.025 3.946 3.868 3.791 3.716 3.642 3.57 3.499 3.429 3.361 3.293 3.227 3.163 3.099 3.037 2.976 2.916 2.857 2.8 2.743 2.688 2.634 2.58 2.528 2.477 2.427 2.378 2.329 2.282 2.236 2.19 2.146 2.102 2.06 2.018

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.259" PeakHeight="110.0" Num="3" Error="0.0">
-27.474 9.094 -1.557
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.259" EndFrequency="12.3" PeakHeight="445.739" Num="5" zHalfNm="344.362" Error="1.383">
-277.007 -33.366 20.196 -6.503 0.749
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="39.808" Depth="0.162"/>
<TopsideChapman PeakHeight="445.739" PeakDensity="1877047.1" PeakScaleHeight="75.219" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
