<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 18:00:00.000"
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="18.0">
<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" >
2026.10.12 (285) 18:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628510121800009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.476" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.992" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="512.176" 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="2.965" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.156" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="387.838" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.861" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.144" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="161.762" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.779" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="89.233" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="194.250" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.480" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="102">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.75 10.8 10.85 10.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 335.000 335.000 335.000 335.000 337.500 340.000 340.000 345.000 345.000 347.500 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 365.000 367.500 370.000 372.323 374.645 376.968 379.291 381.613 383.936 386.259 388.581 390.904 393.227 395.549 397.872 400.195 402.517 404.840 407.163 409.485 411.808 414.131 416.453 418.776 421.098 423.421 425.744 428.066 430.389 432.712 435.034 437.357 439.680 442.002 444.325 446.648 448.970 451.293 453.616 455.938 458.261 460.584 462.906 465.229 467.552 469.874 472.197 474.520 476.842 479.165 481.488 483.810 486.133 488.456 490.778 493.101 495.424 497.746 500.069 502.392 504.714 508.279 512.176 516.454 521.172 525.000 530.000 540.000 545.000 555.000 565.000 575.000 590.000 605.000 625.000 645.000 675.000 715.510
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 72 66 69 63 0 72 66 69 69 0 66 72 72 69 69 66 69 69 66 69 54 63 66 69 60 66 0 0 0 48 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 -1.171875 0.390625 1.953125 2.734375 -2.734375 -2.734375 -0.390625 1.171875 -1.953125 0.390625 -2.734375 -2.734375 -1.171875 1.953125 -1.171875 1.171875 1.953125 1.953125 1.953125 2.734375 0.390625 0.390625 -2.734375 -0.390625 -1.953125 1.953125 1.171875 -0.390625 0.390625 -2.734375 1.171875 2.734375 1.953125 1.953125 0.390625 1.171875 1.171875 2.734375 -2.734375 -1.953125 1.953125 -2.734375 0.390625 2.734375 -0.390625 1.953125 -0.390625 -0.390625 2.734375 -1.953125 2.734375 -1.953125 1.953125 -1.171875 0.390625 -2.734375 -1.171875 -1.171875 -0.390625 -0.390625 1.171875 0.390625 1.171875 -0.390625 -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" >
89.551 90.0 95.0 100.0 105.0 110.0 113.375 115.0 116.751 120.0 120.126 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 387.838 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.993 2.566 2.869 2.965 2.843 2.843 2.843 2.96 2.965 3.124 3.287 3.448 3.608 3.767 3.925 4.081 4.237 4.392 4.547 4.701 4.856 5.01 5.165 5.321 5.477 5.634 5.792 5.951 6.11 6.272 6.434 6.598 6.763 6.929 7.097 7.266 7.437 7.609 7.782 7.956 8.131 8.306 8.482 8.658 8.833 9.008 9.181 9.352 9.52 9.683 9.842 9.995 10.141 10.278 10.405 10.52 10.623 10.711 10.783 10.839 10.877 10.897 10.9 10.899 10.893 10.881 10.862 10.838 10.808 10.772 10.732 10.686 10.636 10.582 10.523 10.46 10.394 10.324 10.25 10.174 10.094 10.012 9.928 9.841 9.752 9.66 9.568 9.473 9.377 9.279 9.181 9.081 8.98 8.879 8.776 8.674 8.57 8.467 8.363 8.258 8.154 8.05 7.946 7.842 7.738 7.634 7.531 7.428 7.326 7.224 7.122 7.022 6.922 6.822 6.724 6.626 6.528 6.432 6.337 6.242 6.148 6.056 5.964 5.873 5.783 5.694 5.606 5.519 5.433 5.348 5.264 5.181 5.099 5.018 4.938 4.859 4.781 4.705 4.629 4.554 4.48 4.408 4.336 4.265 4.195 4.127 4.059 3.992 3.926 3.862 3.798 3.735 3.673 3.612 3.552 3.492 3.434 3.377 3.32 3.265 3.21 3.156 3.103 3.051 2.999 2.949 2.899 2.85 2.801 2.754 2.707 2.661 2.616 2.572 2.528 2.485 2.443 2.401 2.36 2.32 2.28 2.241 2.203 2.165 2.128 2.092

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.965" PeakHeight="110.0" Num="3" Error="0.0">
-30.166 12.659 -2.942
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.965" EndFrequency="10.9" PeakHeight="387.838" Num="5" zHalfNm="267.861" Error="2.169">
-243.247 -36.77 12.491 0.354 -0.54
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.126" Depth="0.122"/>
<TopsideChapman PeakHeight="387.838" PeakDensity="1474069.5" PeakScaleHeight="89.233" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
