<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 19:40:00.000"
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" >
2026.10.12 (285) 19:40:00</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">
FF202628510121940009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.424" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.697" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="9.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="531.440" 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="2.236" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="395.148" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="273.502" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.468" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="167.440" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.721" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="88.321" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="181.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.720" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="99">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 300.000 305.000 310.000 312.500 315.000 315.000 317.500 320.000 320.000 320.000 320.000 325.000 325.000 325.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 360.000 365.000 360.000 363.362 366.723 370.085 373.446 376.808 380.169 383.531 386.893 390.254 393.616 396.977 400.339 403.700 407.062 410.423 413.785 417.147 420.508 423.870 427.231 430.593 433.954 437.316 440.678 444.039 447.401 450.762 454.124 457.485 460.847 464.209 467.570 470.932 474.293 477.655 481.016 484.378 487.740 491.101 494.463 497.824 501.186 504.547 507.909 511.270 514.632 517.994 521.355 524.717 528.078 531.440 535.000 545.000 550.000 555.000 565.000 575.000 580.000 595.000 605.000 620.000 635.000 655.000 675.000 698.925
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 72 57 66 72 0 66 72 75 75 72 75 75 72 78 69 75 75 72 78 75 75 75 72 75 72 75 69 75 75 75 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 -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 -1.171875 -0.390625 1.171875 -1.953125 0.390625 -1.953125 1.953125 -1.953125 -2.734375 2.734375 -2.734375 -2.734375 0.390625 -1.171875 -1.171875 1.171875 1.953125 0.390625 -0.390625 -0.390625 2.734375 -1.953125 2.734375 2.734375 -1.953125 -1.953125 -2.734375 2.734375 -1.171875 -2.734375 2.734375 -1.171875 0.390625 -2.734375 -1.953125 -1.953125 -2.734375 2.734375 -0.390625 -1.953125 -0.390625 -2.734375 -0.390625 1.171875 -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" >
89.699 90.0 95.0 100.0 105.0 110.0 115.0 116.938 120.0 123.875 125.0 130.0 130.813 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 395.148 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.226 1.5 1.936 2.164 2.236 2.17 2.108 2.108 2.108 2.129 2.221 2.236 2.368 2.516 2.66 2.805 2.952 3.105 3.262 3.427 3.598 3.777 3.963 4.155 4.353 4.556 4.762 4.971 5.181 5.39 5.599 5.806 6.011 6.213 6.413 6.609 6.803 6.994 7.182 7.367 7.55 7.729 7.906 8.081 8.252 8.422 8.588 8.752 8.913 9.07 9.225 9.376 9.522 9.664 9.801 9.931 10.055 10.169 10.274 10.367 10.447 10.512 10.56 10.59 10.6 10.6 10.597 10.587 10.572 10.55 10.523 10.49 10.452 10.409 10.362 10.31 10.254 10.193 10.129 10.061 9.99 9.916 9.839 9.759 9.677 9.592 9.505 9.416 9.325 9.232 9.138 9.042 8.946 8.848 8.749 8.649 8.549 8.448 8.347 8.245 8.143 8.04 7.938 7.835 7.733 7.631 7.529 7.427 7.325 7.224 7.124 7.024 6.924 6.825 6.727 6.629 6.532 6.436 6.341 6.246 6.153 6.06 5.968 5.877 5.787 5.697 5.609 5.522 5.436 5.35 5.266 5.183 5.1 5.019 4.939 4.86 4.781 4.704 4.628 4.553 4.479 4.405 4.333 4.262 4.192 4.123 4.055 3.988 3.921 3.856 3.792 3.729 3.666 3.605 3.544 3.485 3.426 3.369 3.312 3.256 3.201 3.146 3.093 3.041 2.989 2.938 2.888 2.839 2.79 2.743 2.696 2.649 2.604 2.559 2.515 2.472 2.43 2.388 2.347 2.306 2.267 2.228 2.189 2.151 2.114 2.078 2.042

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.236" PeakHeight="110.0" Num="3" Error="0.0">
-29.401 11.571 -2.471
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.236" EndFrequency="10.6" PeakHeight="395.148" Num="5" zHalfNm="273.502" Error="4.727">
-253.085 -21.227 15.352 -8.502 3.127
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="20.813" Depth="0.128"/>
<TopsideChapman PeakHeight="395.148" PeakDensity="1394044.6" PeakScaleHeight="88.321" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
