<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 19:40:00.000"
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" >
2026.10.13 (286) 19:40:00</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">
FF202628610131940009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.589" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.424" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.250" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.233" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="373.302" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="277.477" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.468" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="132.995" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.306" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.133" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="154.750" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.430" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="112">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 346.962 348.924 350.886 352.848 354.810 356.772 358.734 360.696 362.658 364.620 366.582 368.544 370.506 372.468 374.430 376.392 378.354 380.316 382.278 384.241 386.203 388.165 390.127 392.089 394.051 396.013 397.975 399.937 401.899 403.861 405.823 407.785 409.747 411.709 413.671 415.633 417.595 419.557 421.519 423.481 425.443 427.405 429.367 431.329 433.291 435.253 437.215 439.177 441.139 443.101 445.063 447.025 448.987 450.949 452.911 454.873 456.835 458.797 460.759 462.722 464.684 466.646 468.608 470.570 472.532 474.494 476.456 478.418 480.380 482.342 484.304 486.266 488.228 490.190 492.152 494.114 496.076 498.038 500.000 505.000 515.000 525.000 534.388 545.644 559.388 576.546 598.573 627.881
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 72 72 72 63 69 72 72 63 66 72 75 78 72 75 78 75 72 75 63 75 75 75 78 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 0 0 54 54 54 57 57 54 54 0 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 0.390625 -0.390625 -1.171875 -0.390625 -0.390625 0.390625 -1.953125 2.734375 -2.734375 -0.390625 1.953125 -1.171875 -1.171875 -2.734375 2.734375 -1.171875 -0.390625 1.953125 -0.390625 1.953125 -1.953125 -1.953125 2.734375 2.734375 -2.734375 -2.734375 1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -0.390625 1.171875 -2.734375 2.734375 2.734375 2.734375 -2.734375 -1.171875 -1.953125 -2.734375 -2.734375 2.734375 1.171875 1.953125 0.390625 -2.734375 -1.171875 -1.953125 -1.953125 -1.953125 -0.390625 -1.171875 -2.734375 -2.734375 0.390625 1.171875 -2.734375 -2.734375 -0.390625 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
</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" >
89.699 90.0 95.0 100.0 105.0 110.0 115.0 116.951 120.0 123.901 125.0 130.0 130.852 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 373.302 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.226 1.498 1.934 2.161 2.233 2.167 2.105 2.105 2.105 2.125 2.217 2.233 2.376 2.552 2.732 2.917 3.106 3.299 3.495 3.695 3.897 4.101 4.308 4.516 4.725 4.936 5.148 5.36 5.574 5.789 6.004 6.22 6.437 6.654 6.873 7.092 7.312 7.532 7.753 7.975 8.198 8.421 8.645 8.869 9.093 9.317 9.54 9.763 9.983 10.201 10.416 10.625 10.827 11.019 11.198 11.36 11.5 11.614 11.696 11.741 11.75 11.749 11.74 11.719 11.688 11.647 11.597 11.538 11.471 11.396 11.313 11.224 11.129 11.028 10.921 10.81 10.694 10.574 10.45 10.324 10.194 10.061 9.927 9.79 9.652 9.512 9.371 9.23 9.087 8.944 8.801 8.658 8.516 8.373 8.231 8.089 7.948 7.809 7.669 7.532 7.395 7.259 7.125 6.992 6.861 6.731 6.602 6.476 6.35 6.227 6.105 5.985 5.867 5.75 5.635 5.522 5.411 5.302 5.194 5.088 4.984 4.882 4.782 4.683 4.586 4.491 4.397 4.305 4.215 4.127 4.04 3.955 3.872 3.79 3.709 3.631 3.554 3.478 3.404 3.331 3.26 3.19 3.122 3.055 2.989 2.925 2.862 2.8 2.74 2.68 2.622 2.566 2.51 2.456 2.403 2.35 2.299 2.249 2.2 2.153 2.106 2.06 2.015 1.971 1.928 1.886 1.845 1.805 1.765 1.727 1.689 1.652 1.616 1.58 1.546 1.512 1.479 1.446 1.415 1.384 1.353 1.324 1.295 1.266 1.239 1.211 1.185

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.233" PeakHeight="110.0" Num="3" Error="0.0">
-29.397 11.565 -2.469
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.233" EndFrequency="11.75" PeakHeight="373.302" Num="5" zHalfNm="277.477" Error="1.444">
-219.909 -37.797 19.689 -5.172 0.739
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="20.852" Depth="0.128"/>
<TopsideChapman PeakHeight="373.302" PeakDensity="1712934.2" PeakScaleHeight="70.133" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
