<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 19:20:00.000"
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) 19:20:00</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">
FF202628410111920009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.568" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.970" 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="12.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="11.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.437" 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="383.386" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="289.164" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.438" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="131.566" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.583" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.916" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="158.470" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.340" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="133">
<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 12.35 12.4 12.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 322.500 325.000 325.000 325.000 327.500 330.000 330.000 330.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 355.000 355.000 355.000 357.500 360.000 360.000 360.000 365.000 365.000 365.000 365.000 366.316 367.632 368.947 370.263 371.579 372.895 374.211 375.526 376.842 378.158 379.474 380.789 382.105 383.421 384.737 386.053 387.368 388.684 390.000 391.316 392.632 393.947 395.263 396.579 397.895 399.211 400.526 401.842 403.158 404.474 405.789 407.105 408.421 409.737 411.053 412.368 413.684 415.000 416.316 417.632 418.947 420.263 421.579 422.895 424.211 425.526 426.842 428.158 429.474 430.789 432.105 433.421 434.737 436.053 437.368 438.684 440.000 441.316 442.632 443.947 445.263 446.579 447.895 449.211 450.526 451.842 453.158 454.474 455.789 457.105 458.421 459.737 461.053 462.368 463.684 465.000 465.000 465.000 470.000 470.000 475.000 475.000 480.000 480.000 485.000 488.333 491.667 495.000 495.000 500.000 504.160 508.910 514.383 520.759 528.281 537.289 548.272 561.959 579.488 602.742 635.073 683.082
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 72 0 66 69 75 66 72 72 72 75 78 72 75 75 75 75 78 78 75 66 69 75 60 72 78 78 75 75 75 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 0 0 48 60 63 57 66 60 63 63 66 63 0 0 66 66 60 0 63 63 60 57 60 60 57 54 0 0 0
</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 -0.390625 -1.953125 -0.390625 -0.390625 2.734375 -1.953125 -0.390625 -0.390625 2.734375 -1.953125 -0.390625 1.171875 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.953125 -0.390625 -1.953125 -1.953125 2.734375 -0.390625 1.953125 2.734375 1.171875 -0.390625 -1.953125 1.953125 -1.171875 -0.390625 1.953125 -0.390625 1.953125 0.390625 1.953125 1.953125 -0.390625 -1.171875 -1.953125 -1.953125 -1.171875 1.171875 0.390625 1.953125 -0.390625 2.734375 -1.953125 -0.390625 -0.390625 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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
</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" >
89.653 90.0 95.0 100.0 105.0 110.0 115.0 115.901 120.0 121.803 125.0 127.704 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 383.386 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.636 2.11 2.358 2.437 2.348 2.312 2.312 2.312 2.38 2.437 2.513 2.686 2.868 3.053 3.241 3.428 3.614 3.799 3.983 4.166 4.349 4.531 4.714 4.897 5.081 5.266 5.453 5.641 5.832 6.025 6.22 6.418 6.62 6.825 7.033 7.245 7.461 7.681 7.905 8.133 8.366 8.603 8.844 9.089 9.337 9.588 9.842 10.096 10.35 10.602 10.849 11.091 11.322 11.541 11.745 11.928 12.089 12.223 12.328 12.402 12.442 12.45 12.449 12.44 12.419 12.387 12.344 12.292 12.231 12.162 12.084 11.998 11.906 11.807 11.701 11.591 11.475 11.354 11.229 11.101 10.968 10.833 10.695 10.554 10.412 10.267 10.121 9.974 9.826 9.677 9.527 9.377 9.228 9.078 8.928 8.779 8.63 8.483 8.336 8.189 8.044 7.9 7.758 7.616 7.477 7.338 7.201 7.066 6.932 6.8 6.67 6.541 6.414 6.289 6.166 6.045 5.925 5.807 5.691 5.577 5.465 5.355 5.247 5.14 5.035 4.932 4.831 4.732 4.634 4.539 4.445 4.353 4.262 4.173 4.086 4.001 3.917 3.834 3.754 3.675 3.597 3.521 3.447 3.374 3.302 3.232 3.163 3.096 3.03 2.966 2.902 2.84 2.78 2.72 2.662 2.605 2.549 2.494 2.441 2.388 2.337 2.287 2.237 2.189 2.142 2.096 2.051 2.006 1.963 1.921 1.879 1.839 1.799 1.76 1.722 1.685 1.648 1.612 1.577 1.543 1.51 1.477 1.445 1.414 1.383 1.353

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.437" PeakHeight="110.0" Num="3" Error="0.0">
-29.644 11.911 -2.614
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.437" EndFrequency="12.45" PeakHeight="383.386" Num="5" zHalfNm="289.164" Error="2.453">
-226.817 -43.35 14.727 1.323 -1.565
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="17.704" Depth="0.125"/>
<TopsideChapman PeakHeight="383.386" PeakDensity="1923108.0" PeakScaleHeight="70.916" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
