<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 15:20:00.000"
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: 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" >
2026.10.13 (286) 15:20:00</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">
FF202628610131520009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.359" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.656" 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="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="88" Val="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="571.184" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.389" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.360" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="388.890" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="255.845" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.996" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="169.919" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.586" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="94.674" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="219.860" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.300" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="93">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 383.414 386.828 390.242 393.656 397.070 400.484 403.898 407.312 410.726 414.140 417.554 420.968 424.382 427.796 431.210 434.624 438.038 441.452 444.866 448.280 451.694 455.108 458.522 461.936 465.350 468.764 472.178 475.592 479.006 482.420 485.834 489.248 492.662 496.076 499.490 502.904 506.318 509.732 513.146 516.560 519.974 523.388 526.802 530.216 533.630 537.044 540.458 543.872 547.286 550.700 554.114 557.528 560.942 564.356 567.770 571.184 574.598 580.000 590.000 595.000 605.000 620.000 630.000 650.000 675.000 706.104
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 51 51 57 57 54 54 54 54 54 57 66 69 69 69 60 69 63 66 0 0 0 63 63 66 66 66 0 0 63 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 -0.390625 1.171875 0.390625 -1.953125 1.953125 2.734375 1.953125 -1.953125 -0.390625 -2.734375 0.390625 -2.734375 1.171875 0.390625 -2.734375 0.390625 -0.390625 -1.171875 -1.171875 -0.390625 1.171875 -0.390625 1.171875 1.171875 -2.734375 -2.734375 0.390625 1.953125 -0.390625 1.953125 1.953125 -0.390625 -2.734375 1.171875 1.171875 -1.171875 0.390625 0.390625 -1.171875 -0.390625 1.171875 0.390625 2.734375 1.171875 0.390625 -1.953125 -2.734375 -1.953125 1.953125 -2.734375 2.734375 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" >
89.484 90.0 95.0 100.0 105.0 110.0 111.554 113.108 114.662 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 388.89 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.28 2.933 3.279 3.389 3.266 3.266 3.389 3.401 3.566 3.718 3.864 4.005 4.144 4.283 4.421 4.559 4.697 4.836 4.976 5.116 5.256 5.398 5.539 5.681 5.823 5.965 6.107 6.248 6.39 6.531 6.671 6.811 6.951 7.09 7.228 7.366 7.503 7.64 7.776 7.911 8.046 8.181 8.315 8.448 8.581 8.713 8.845 8.976 9.106 9.236 9.364 9.491 9.617 9.74 9.86 9.975 10.085 10.186 10.276 10.352 10.408 10.442 10.45 10.45 10.446 10.436 10.422 10.402 10.377 10.347 10.314 10.275 10.233 10.187 10.137 10.083 10.026 9.966 9.903 9.837 9.769 9.697 9.624 9.548 9.471 9.391 9.309 9.226 9.142 9.056 8.969 8.88 8.791 8.701 8.61 8.518 8.426 8.333 8.24 8.146 8.052 7.958 7.864 7.77 7.675 7.581 7.487 7.394 7.3 7.207 7.114 7.021 6.929 6.838 6.747 6.656 6.566 6.477 6.388 6.3 6.213 6.126 6.04 5.955 5.87 5.787 5.704 5.622 5.541 5.46 5.381 5.302 5.224 5.147 5.071 4.996 4.921 4.848 4.775 4.703 4.632 4.562 4.493 4.425 4.357 4.291 4.225 4.16 4.096 4.033 3.971 3.909 3.849 3.789 3.73 3.672 3.615 3.558 3.503 3.448 3.393 3.34 3.288 3.236 3.185 3.134 3.085 3.036 2.988 2.94 2.894 2.848 2.802 2.758 2.714 2.67 2.628 2.586 2.544 2.503 2.463 2.424 2.385 2.347 2.309 2.272

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.389" PeakHeight="110.0" Num="3" Error="0.0">
-30.499 13.15 -3.167
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.389" EndFrequency="10.45" PeakHeight="388.89" Num="5" zHalfNm="255.845" Error="2.701">
-237.827 -56.626 24.916 -6.69 1.999
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.662" Depth="0.123"/>
<TopsideChapman PeakHeight="388.89" PeakDensity="1354869.8" PeakScaleHeight="94.674" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
