<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 13:50:00.000"
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: 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" >
2026.10.15 (288) 13:50:00</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">
FF202628810151350009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.415" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.957" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="350.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="350.000" 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="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="532.120" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.373" 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="4.353" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="386.317" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.236" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.375" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="163.663" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.126" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="91.912" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="210.920" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="95">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
350.000 350.000 355.000 355.000 355.000 355.000 355.000 355.000 357.500 360.000 360.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 377.749 380.497 383.246 385.994 388.743 391.491 394.240 396.988 399.737 402.486 405.234 407.983 410.731 413.480 416.228 418.977 421.725 424.474 427.223 429.971 432.720 435.468 438.217 440.965 443.714 446.462 449.211 451.959 454.708 457.457 460.205 462.954 465.702 468.451 471.199 473.948 476.696 479.445 482.194 484.942 487.691 490.439 493.188 495.936 498.685 501.433 504.182 506.931 509.679 512.428 515.176 517.925 520.673 523.422 526.170 529.009 532.120 535.543 539.328 543.536 548.242 555.000 560.000 565.000 575.000 585.000 595.000 610.000 625.000 645.000 670.000 705.293
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 60 60 63 0 66 63 0 63 63 63 63 60 63 66 0 63 63 60 0 63 63 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 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 -1.171875 0.390625 0.390625 0.390625 -0.390625 0.390625 -2.734375 0.390625 -0.390625 0.390625 -0.390625 1.953125 -0.390625 -2.734375 -2.734375 1.953125 -1.953125 -2.734375 -2.734375 -1.171875 -2.734375 -2.734375 1.953125 -2.734375 2.734375 -1.953125 -1.171875 1.171875 2.734375 -1.953125 -1.953125 -1.171875 0.390625 -1.171875 1.171875 -1.171875 -1.171875 -1.953125 -1.953125 0.390625 1.171875 -1.171875 -1.953125 1.171875 2.734375 -1.171875 -0.390625 -1.953125 0.390625 0.390625 2.734375 2.734375 1.171875 2.734375 -2.734375 -1.953125 -0.390625 -2.734375 1.953125 -2.734375 0.390625
</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" >
89.486 90.0 95.0 100.0 105.0 110.0 111.62 113.241 114.861 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 386.317 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.269 2.919 3.263 3.373 3.25 3.25 3.373 3.378 3.549 3.711 3.866 4.018 4.166 4.311 4.455 4.598 4.739 4.88 5.021 5.161 5.301 5.441 5.581 5.722 5.862 6.003 6.145 6.287 6.429 6.573 6.717 6.861 7.006 7.152 7.299 7.446 7.594 7.743 7.893 8.043 8.194 8.345 8.497 8.649 8.801 8.953 9.104 9.255 9.405 9.553 9.699 9.841 9.98 10.113 10.239 10.356 10.463 10.556 10.633 10.693 10.732 10.749 10.75 10.748 10.741 10.727 10.708 10.684 10.655 10.62 10.581 10.537 10.489 10.436 10.38 10.32 10.257 10.19 10.12 10.048 9.972 9.894 9.814 9.731 9.647 9.56 9.472 9.382 9.29 9.197 9.104 9.009 8.913 8.816 8.718 8.62 8.522 8.422 8.323 8.223 8.124 8.024 7.924 7.824 7.725 7.625 7.526 7.427 7.329 7.231 7.133 7.036 6.939 6.844 6.748 6.654 6.56 6.466 6.374 6.282 6.191 6.101 6.012 5.924 5.836 5.75 5.664 5.579 5.495 5.412 5.33 5.249 5.169 5.09 5.012 4.934 4.858 4.783 4.708 4.635 4.562 4.491 4.42 4.35 4.282 4.214 4.147 4.081 4.016 3.952 3.889 3.826 3.765 3.704 3.645 3.586 3.528 3.471 3.415 3.359 3.305 3.251 3.198 3.146 3.095 3.044 2.994 2.945 2.897 2.849 2.803 2.757 2.711 2.667 2.623 2.579 2.537 2.495 2.454 2.413 2.373 2.334 2.295 2.257 2.22 2.183

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.373" PeakHeight="110.0" Num="3" Error="0.0">
-30.488 13.133 -3.159
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.373" EndFrequency="10.75" PeakHeight="386.317" Num="5" zHalfNm="260.236" Error="2.248">
-237.255 -51.409 18.495 -1.532 0.245
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.861" Depth="0.123"/>
<TopsideChapman PeakHeight="386.317" PeakDensity="1433777.9" PeakScaleHeight="91.912" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
