<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 12:50:00.000"
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: 50% PACIFIC flags: F2o cusp not found, 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" >
2026.10.15 (288) 12:50:00</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">
FF202628810151250009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.564" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.789" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.850" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="501.797" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.266" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.303" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="350.317" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="242.237" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.074" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="139.064" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.752" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.503" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="180.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.290" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="97">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 335.000 331.667 328.333 325.000 325.000 323.333 321.667 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 332.788 335.576 338.364 341.152 343.940 346.728 349.516 352.304 355.091 357.879 360.667 363.455 366.243 369.031 371.819 374.607 377.395 380.183 382.971 385.759 388.547 391.335 394.123 396.911 399.699 402.487 405.274 408.062 410.850 413.638 416.426 419.214 422.002 424.790 427.578 430.366 433.154 435.942 438.730 441.518 444.306 447.094 449.882 452.670 455.457 458.245 461.033 463.821 466.609 469.397 472.185 474.973 477.761 480.549 483.337 485.705 488.301 491.162 494.328 497.852 501.797 506.245 510.000 515.000 525.000 530.000 540.000 550.000 565.000 585.000 605.998
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 0 0 60 60 0 57 57 0 57 69 69 69 66 60 66 66 69 72 72 72 72 69 72 75 0 0 0 0 0 54 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 1.171875 0.390625 2.734375 0.390625 1.171875 -1.953125 -1.171875 1.171875 2.734375 -1.953125 1.171875 -0.390625 0.390625 -0.390625 0.390625 1.171875 -1.171875 0.390625 0.390625 1.953125 2.734375 -1.953125 -1.171875 2.734375 -1.171875 2.734375 1.171875 1.171875 -1.953125 1.953125 0.390625 1.953125 -2.734375 0.390625 0.390625 0.390625 -1.953125 0.390625 -1.953125 -0.390625 1.953125 1.953125 -1.953125 -1.953125 1.953125 1.171875 -0.390625 -1.953125 0.390625 -1.171875 2.734375 2.734375 -0.390625 0.390625 -2.734375 -0.390625 -1.953125 0.390625 2.734375 -1.171875 -2.734375 1.953125 -2.734375 -1.953125 -1.953125 1.953125 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" >
89.502 90.0 95.0 100.0 105.0 110.0 112.065 114.129 115.0 116.194 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 350.317 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.197 2.827 3.16 3.266 3.144 3.144 3.195 3.266 3.421 3.598 3.762 3.918 4.072 4.224 4.376 4.528 4.682 4.837 4.994 5.153 5.313 5.475 5.639 5.804 5.97 6.136 6.304 6.472 6.64 6.809 6.977 7.146 7.314 7.482 7.65 7.817 7.983 8.149 8.315 8.48 8.644 8.808 8.971 9.132 9.293 9.451 9.606 9.758 9.905 10.043 10.17 10.281 10.37 10.428 10.45 10.45 10.446 10.434 10.415 10.388 10.353 10.312 10.265 10.212 10.152 10.088 10.018 9.944 9.865 9.782 9.696 9.606 9.512 9.416 9.317 9.215 9.112 9.006 8.899 8.79 8.679 8.568 8.455 8.342 8.228 8.114 7.999 7.884 7.769 7.653 7.539 7.424 7.31 7.196 7.082 6.97 6.857 6.746 6.636 6.526 6.417 6.309 6.203 6.097 5.992 5.889 5.787 5.686 5.586 5.487 5.39 5.293 5.199 5.105 5.013 4.922 4.832 4.744 4.656 4.571 4.486 4.403 4.321 4.24 4.161 4.083 4.006 3.931 3.856 3.783 3.712 3.641 3.572 3.504 3.437 3.371 3.306 3.243 3.18 3.119 3.059 2.999 2.941 2.884 2.828 2.774 2.72 2.667 2.615 2.564 2.514 2.465 2.416 2.369 2.323 2.277 2.233 2.189 2.146 2.104 2.062 2.022 1.982 1.943 1.904 1.867 1.83 1.794 1.759 1.724 1.69 1.656 1.624 1.591 1.56 1.529 1.499 1.469 1.44 1.411 1.383 1.356 1.329 1.303 1.277 1.252

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.266" PeakHeight="110.0" Num="3" Error="0.0">
-30.409 13.016 -3.105
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.266" EndFrequency="10.45" PeakHeight="350.317" Num="5" zHalfNm="242.237" Error="3.741">
-200.492 -50.31 19.482 -4.768 1.965
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.194" Depth="0.122"/>
<TopsideChapman PeakHeight="350.317" PeakDensity="1354869.8" PeakScaleHeight="77.503" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
