<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-26 -299 19:00:00.000"
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="14.0">
<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" >
2026.10.26 (299) 19:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629910261900009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.571" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.891" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="10.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.821" 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="2.576" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="367.264" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.421" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.387" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="148.325" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.137" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="79.625" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="170.340" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.550" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="82">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 341.667 343.333 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 358.333 361.667 365.000 365.000 370.000 370.000 372.171 374.342 376.513 378.684 380.855 383.026 385.197 387.368 389.539 391.710 393.880 396.051 398.222 400.393 402.564 404.735 406.906 409.077 411.248 413.419 415.590 417.761 419.932 422.103 424.274 426.445 428.616 430.787 432.958 435.129 437.300 439.470 441.641 443.812 445.983 448.154 450.325 452.496 454.667 456.838 459.009 461.180 463.351 465.522 467.693 469.864 472.035 474.696 477.612 480.821 484.370 488.315 492.727 497.694 505.000 510.000 515.000 525.000 535.000 550.000 565.000 585.000 605.000 640.000 686.123
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 0 0 75 63 0 0 72 72 72 75 0 0 66 72 63 69 60 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 -1.171875 0.390625 1.953125 -0.390625 -0.390625 1.171875 2.734375 -2.734375 -1.953125 2.734375 1.171875 0.390625 1.953125 -0.390625 -0.390625 2.734375 -0.390625 1.953125 -1.953125 -2.734375 -1.171875 1.953125 -1.953125 1.171875 0.390625 0.390625 -1.171875 -0.390625 2.734375 2.734375 -0.390625 2.734375 -1.953125 -1.953125 -1.953125 -2.734375 1.953125 1.171875 2.734375 1.953125 1.171875 1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -1.953125 -1.171875 2.734375 2.734375 0.390625 -1.953125
</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" >
89.624 90.0 95.0 100.0 105.0 110.0 115.0 115.208 120.0 120.417 125.0 125.625 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 367.264 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.231 1.73 2.23 2.493 2.576 2.462 2.452 2.452 2.452 2.561 2.576 2.712 2.875 3.045 3.222 3.404 3.591 3.782 3.976 4.172 4.37 4.569 4.768 4.968 5.168 5.368 5.568 5.767 5.966 6.165 6.363 6.56 6.757 6.953 7.149 7.345 7.539 7.733 7.927 8.119 8.31 8.501 8.69 8.877 9.062 9.244 9.424 9.599 9.77 9.935 10.092 10.241 10.378 10.503 10.613 10.704 10.775 10.823 10.847 10.85 10.849 10.84 10.824 10.8 10.769 10.731 10.687 10.636 10.58 10.518 10.451 10.379 10.302 10.222 10.137 10.049 9.957 9.862 9.764 9.664 9.561 9.456 9.35 9.241 9.131 9.02 8.907 8.793 8.679 8.564 8.448 8.332 8.216 8.1 7.983 7.867 7.751 7.636 7.52 7.405 7.291 7.178 7.065 6.953 6.841 6.731 6.621 6.513 6.405 6.299 6.193 6.089 5.986 5.884 5.783 5.684 5.586 5.488 5.393 5.298 5.205 5.113 5.022 4.933 4.844 4.758 4.672 4.588 4.505 4.423 4.342 4.263 4.185 4.108 4.033 3.959 3.886 3.814 3.743 3.674 3.605 3.538 3.472 3.407 3.343 3.281 3.219 3.159 3.099 3.041 2.983 2.927 2.872 2.817 2.764 2.711 2.66 2.609 2.56 2.511 2.463 2.416 2.37 2.325 2.28 2.237 2.194 2.152 2.111 2.07 2.031 1.992 1.953 1.916 1.879 1.843 1.808 1.773 1.739 1.705 1.672 1.64 1.609 1.578 1.547 1.517 1.488

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.576" PeakHeight="110.0" Num="3" Error="0.0">
-29.796 12.126 -2.706
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.576" EndFrequency="10.85" PeakHeight="367.264" Num="5" zHalfNm="258.421" Error="1.479">
-224.43 -28.564 15.487 -4.62 0.488
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="15.625" Depth="0.124"/>
<TopsideChapman PeakHeight="367.264" PeakDensity="1460576.9" PeakScaleHeight="79.625" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
