<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 10:30:00.000"
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) 10:30:00</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">
FF202628810151030009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.978" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.230" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="270.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="270.000" 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="9.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="400.197" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="2.630" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="304.782" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="235.261" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.798" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="94.206" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="29.595" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="52.600" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="118.890" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="110">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
270.000 275.000 276.250 277.500 278.750 280.000 280.000 280.909 281.818 282.727 283.636 284.545 285.455 286.364 287.273 288.182 289.091 290.000 290.000 290.833 291.667 292.500 293.333 294.167 295.000 295.000 295.000 295.000 295.000 295.000 295.000 297.500 300.000 300.000 300.000 300.000 300.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 305.000 305.000 306.670 308.340 310.010 311.680 313.351 315.021 316.691 318.361 320.031 321.701 323.371 325.041 326.712 328.382 330.052 331.722 333.392 335.062 336.732 338.402 340.073 341.743 343.413 345.083 346.753 348.423 350.093 351.763 353.434 355.104 356.774 358.444 360.114 361.784 363.454 365.124 366.794 368.465 370.135 371.805 373.475 375.145 376.815 378.485 380.155 381.826 383.496 385.166 386.836 388.506 390.176 391.846 393.516 395.187 396.857 398.527 400.197 405.000 415.000 420.000 435.000 450.000 480.000 523.644
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 69 0 0 0 60 0 0 0 0 75 75 0 81 0 72 0 78 0 78 0 75 72 72 75 0 78 78 72 0 0 75 0 0 0 0 0 0 0 0 0 0 0 0 45 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 1.171875 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 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 -1.171875 1.171875 2.734375 -2.734375 1.953125 -0.390625 -0.390625 1.171875 2.734375 -2.734375 -1.953125 1.171875 -2.734375 -2.734375 -0.390625 0.390625 2.734375 -1.953125 1.171875 -1.171875 -2.734375 -2.734375 2.734375 -0.390625 1.171875 -1.953125 -1.171875 0.390625 -1.171875 2.734375 0.390625 0.390625 2.734375 1.171875 2.734375 -1.171875 -0.390625 2.734375 -1.953125 -0.390625 1.171875 0.390625 -1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -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" >
89.613 90.0 95.0 100.0 105.0 110.0 114.943 115.0 119.887 120.0 124.83 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 304.782 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.232 1.766 2.277 2.545 2.63 2.507 2.507 2.507 2.51 2.63 2.638 2.863 3.062 3.25 3.431 3.609 3.787 3.964 4.144 4.325 4.51 4.698 4.891 5.089 5.292 5.502 5.717 5.94 6.169 6.406 6.651 6.903 7.163 7.43 7.703 7.981 8.261 8.541 8.817 9.083 9.335 9.565 9.765 9.93 10.052 10.126 10.15 10.15 10.14 10.114 10.072 10.016 9.945 9.863 9.769 9.665 9.551 9.429 9.3 9.164 9.022 8.875 8.724 8.569 8.411 8.251 8.089 7.925 7.761 7.597 7.432 7.267 7.104 6.941 6.779 6.619 6.46 6.304 6.149 5.996 5.846 5.698 5.552 5.409 5.268 5.131 4.995 4.863 4.733 4.606 4.482 4.361 4.242 4.126 4.013 3.902 3.794 3.689 3.586 3.486 3.389 3.293 3.201 3.11 3.023 2.937 2.854 2.772 2.694 2.617 2.542 2.469 2.398 2.33 2.263 2.198 2.135 2.073 2.013 1.955 1.899 1.844 1.79 1.739 1.688 1.639 1.592 1.546 1.501 1.457 1.415 1.374 1.334 1.295 1.257 1.221 1.185 1.151 1.117 1.085 1.053 1.022 0.992 0.963 0.935 0.908 0.882 0.856 0.831 0.807 0.783 0.76 0.738 0.716 0.695 0.675 0.655 0.636 0.618 0.6 0.582 0.565 0.549 0.533 0.517 0.502 0.487 0.473 0.459 0.446 0.433 0.42 0.408 0.396 0.384 0.373 0.362 0.351 0.341 0.331 0.321 0.312 0.303 0.294 0.285 0.277 0.269

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.63" PeakHeight="110.0" Num="3" Error="0.0">
-29.851 12.205 -2.741
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.63" EndFrequency="10.15" PeakHeight="304.782" Num="5" zHalfNm="235.261" Error="2.992">
-153.396 -34.937 6.124 2.343 -0.086
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="14.83" Depth="0.123"/>
<TopsideChapman PeakHeight="304.782" PeakDensity="1278194.8" PeakScaleHeight="52.6" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
