<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 14:40:00.000"
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="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" >
2026.10.16 (289) 14:40:00</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">
FF202628910161440009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.439" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.444" 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="11.650" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="562.215" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.401" 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="4.366" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="375.310" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="259.022" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.699" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="147.814" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.314" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.762" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="198.290" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.180" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="109">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 320.000 320.000 320.000 321.000 322.000 323.000 324.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 337.500 340.000 340.000 345.000 345.000 345.000 347.785 350.570 353.354 356.139 358.924 361.709 364.494 367.278 370.063 372.848 375.633 378.418 381.203 383.987 386.772 389.557 392.342 395.127 397.911 400.696 403.481 406.266 409.051 411.835 414.620 417.405 420.190 422.975 425.759 428.544 431.329 434.114 436.899 439.684 442.468 445.253 448.038 450.823 453.608 456.392 459.177 461.962 464.747 467.532 470.316 473.101 475.886 478.671 481.456 484.241 487.025 489.810 492.595 495.380 498.165 500.949 503.734 506.519 509.304 512.089 514.873 517.658 520.443 523.228 526.013 528.797 531.582 534.367 537.152 539.937 542.722 545.506 548.291 551.076 553.861 556.646 559.430 562.215 565.000 570.000 585.000 595.000 612.808 639.254
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 66 0 66 0 63 0 0 69 66 0 0 66 66 0 0 63 0 63 0 69 66 66 72 72 0 0 57 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 57 54 51 51 45 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 -1.953125 -0.390625 2.734375 -2.734375 0.390625 -1.171875 -2.734375 0.390625 -1.953125 -1.953125 1.953125 -2.734375 1.953125 -1.953125 -2.734375 1.171875 1.171875 -2.734375 0.390625 2.734375 0.390625 0.390625 1.171875 2.734375 -0.390625 0.390625 -2.734375 2.734375 -1.171875 2.734375 -1.171875 -0.390625 1.953125 -1.171875 -2.734375 -2.734375 -1.953125 -0.390625 0.390625 -1.953125 0.390625 2.734375 -2.734375 2.734375 1.953125 -1.953125 2.734375 2.734375 -0.390625 -1.171875 -1.953125 1.171875 -1.171875 1.953125 -1.171875 -2.734375 -1.953125 -1.953125 2.734375 -1.171875 -2.734375 1.953125 0.390625 -2.734375 2.734375 -0.390625 -2.734375 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375
</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" >
89.481 90.0 95.0 100.0 105.0 110.0 111.505 113.009 114.514 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 375.31 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.288 2.943 3.29 3.401 3.278 3.278 3.401 3.421 3.606 3.772 3.928 4.08 4.229 4.378 4.527 4.676 4.827 4.978 5.132 5.286 5.442 5.6 5.758 5.917 6.077 6.237 6.397 6.558 6.718 6.878 7.038 7.197 7.356 7.514 7.672 7.829 7.986 8.142 8.297 8.453 8.607 8.762 8.917 9.071 9.225 9.38 9.534 9.689 9.843 9.998 10.153 10.308 10.461 10.613 10.761 10.903 11.033 11.143 11.22 11.25 11.25 11.246 11.235 11.216 11.19 11.156 11.116 11.07 11.018 10.96 10.897 10.828 10.755 10.678 10.596 10.511 10.422 10.329 10.234 10.135 10.034 9.931 9.825 9.718 9.608 9.498 9.385 9.272 9.158 9.042 8.926 8.81 8.693 8.576 8.458 8.341 8.223 8.106 7.989 7.872 7.756 7.64 7.525 7.411 7.297 7.184 7.072 6.96 6.85 6.74 6.632 6.525 6.418 6.313 6.209 6.106 6.004 5.903 5.804 5.706 5.609 5.513 5.419 5.325 5.233 5.143 5.053 4.965 4.878 4.793 4.708 4.625 4.543 4.463 4.383 4.305 4.228 4.152 4.078 4.004 3.932 3.861 3.791 3.722 3.655 3.588 3.523 3.459 3.396 3.334 3.272 3.212 3.153 3.096 3.039 2.983 2.928 2.874 2.82 2.768 2.717 2.667 2.617 2.569 2.521 2.474 2.428 2.383 2.339 2.295 2.252 2.21 2.169 2.128 2.089 2.05 2.011 1.974 1.937 1.9 1.865 1.83 1.796 1.762 1.729 1.696

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.401" PeakHeight="110.0" Num="3" Error="0.0">
-30.508 13.162 -3.173
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.401" EndFrequency="11.25" PeakHeight="375.31" Num="5" zHalfNm="259.022" Error="3.017">
-217.074 -66.809 28.741 -8.357 2.703
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.514" Depth="0.123"/>
<TopsideChapman PeakHeight="375.31" PeakDensity="1570254.4" PeakScaleHeight="81.762" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
