<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 12:40:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.17 (290) 12:40:00</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">
FF202629010171240009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.654" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.396" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.150" 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="10.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="471.772" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.240" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.290" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="348.512" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="253.103" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.040" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="124.811" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="44.620" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.560" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="169.250" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.190" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="103">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.6 5.65 5.7 5.75 5.8 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 325.000 330.000 335.000 340.000 340.000 335.000 335.000 340.000 340.000 335.000 340.000 345.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 350.000 351.780 353.560 355.340 357.120 358.901 360.681 362.461 364.241 366.021 367.801 369.581 371.361 373.141 374.922 376.702 378.482 380.262 382.042 383.822 385.602 387.382 389.162 390.943 392.723 394.503 396.283 398.063 399.843 401.623 403.403 405.183 406.963 408.744 410.524 412.304 414.084 415.864 417.644 419.424 421.204 422.984 424.765 426.545 428.325 430.105 431.885 433.665 435.445 437.225 439.005 440.786 442.566 444.346 446.126 447.906 449.686 451.466 453.246 455.026 457.759 460.756 464.055 467.708 471.772 476.321 480.000 485.000 495.000 500.000 510.000 520.000 535.000 550.000 570.000 596.107
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 57 0 0 0 0 69 72 66 69 57 0 66 66 69 72 75 72 72 72 75 0 72 72 66 69 72 72 0 0 72 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 0.390625 2.734375 1.953125 0.390625 1.171875 1.953125 2.734375 -2.734375 1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -0.390625 1.171875 -1.953125 -1.953125 -2.734375 -0.390625 0.390625 -1.171875 1.171875 -1.953125 -0.390625 -2.734375 1.171875 -2.734375 1.171875 -2.734375 2.734375 -1.171875 -0.390625 -1.953125 1.171875 -1.171875 -0.390625 1.953125 1.171875 2.734375 1.171875 0.390625 0.390625 -2.734375 1.171875 -2.734375 -1.171875 -2.734375 1.171875 1.171875 1.171875 2.734375 1.953125 1.171875 -1.171875 -1.953125 1.171875 -1.953125 -2.734375 -1.171875 2.734375 2.734375 -2.734375 2.734375 -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" >
89.506 90.0 95.0 100.0 105.0 110.0 112.176 114.351 115.0 116.527 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 348.512 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.179 2.804 3.135 3.24 3.118 3.118 3.154 3.24 3.383 3.571 3.744 3.909 4.066 4.219 4.368 4.515 4.66 4.804 4.948 5.091 5.235 5.38 5.526 5.673 5.821 5.972 6.124 6.28 6.437 6.598 6.762 6.929 7.1 7.274 7.453 7.636 7.823 8.014 8.21 8.41 8.613 8.819 9.027 9.236 9.443 9.646 9.842 10.027 10.197 10.349 10.478 10.58 10.652 10.692 10.7 10.7 10.692 10.674 10.647 10.612 10.568 10.517 10.458 10.392 10.32 10.242 10.158 10.069 9.976 9.877 9.775 9.67 9.56 9.448 9.334 9.216 9.097 8.976 8.853 8.729 8.604 8.478 8.351 8.224 8.097 7.969 7.841 7.714 7.587 7.46 7.334 7.208 7.084 6.96 6.837 6.715 6.594 6.474 6.356 6.239 6.123 6.008 5.895 5.783 5.673 5.565 5.457 5.352 5.247 5.145 5.044 4.944 4.846 4.75 4.655 4.562 4.47 4.38 4.292 4.204 4.119 4.035 3.953 3.872 3.792 3.714 3.637 3.562 3.488 3.416 3.345 3.275 3.207 3.14 3.074 3.01 2.947 2.885 2.824 2.765 2.707 2.65 2.594 2.539 2.485 2.432 2.381 2.33 2.281 2.233 2.185 2.139 2.093 2.048 2.005 1.962 1.92 1.879 1.839 1.8 1.761 1.724 1.687 1.651 1.615 1.581 1.547 1.514 1.481 1.449 1.418 1.388 1.358 1.329 1.3 1.272 1.245 1.218 1.192 1.167 1.141 1.117 1.093 1.069 1.046 1.024

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.24" PeakHeight="110.0" Num="3" Error="0.0">
-30.389 12.986 -3.091
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.24" EndFrequency="10.7" PeakHeight="348.512" Num="5" zHalfNm="253.103" Error="3.207">
-195.068 -50.763 10.971 3.721 -0.846
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.527" Depth="0.122"/>
<TopsideChapman PeakHeight="348.512" PeakDensity="1420471.5" PeakScaleHeight="71.56" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
