<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 16:20:00.000"
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) 16:20:00</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">
FF202628610131620009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.321" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.136" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.750" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="582.083" 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="3.303" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.320" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="396.931" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.795" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.491" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="177.894" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.975" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="98.239" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="224.180" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.360" 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" >
5.8 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 335.000 335.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 370.000 372.500 375.000 378.765 382.530 386.295 390.061 393.826 397.591 401.356 405.121 408.886 412.651 416.417 420.182 423.947 427.712 431.477 435.242 439.007 442.773 446.538 450.303 454.068 457.833 461.598 465.363 469.128 472.894 476.659 480.424 484.189 487.954 491.719 495.484 499.250 503.015 506.780 510.545 514.310 518.075 521.840 525.606 529.371 533.136 536.901 540.666 544.431 548.196 551.962 555.727 559.492 563.257 567.022 570.787 574.552 578.318 582.083 585.848 590.000 600.000 605.000 615.000 625.000 635.000 650.000 670.000 695.000 725.406
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 60 66 63 60 63 63 0 63 63 63 66 63 66 0 66 69 69 69 69 69 66 69 66 0 66 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
</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 -2.734375 -0.390625 2.734375 -1.171875 -1.171875 -1.171875 -1.953125 1.953125 -2.734375 1.953125 -2.734375 -1.953125 0.390625 1.953125 -1.171875 2.734375 0.390625 0.390625 2.734375 -1.171875 1.171875 -0.390625 1.171875 -2.734375 1.171875 2.734375 2.734375 -0.390625 1.953125 1.171875 -1.171875 -1.171875 2.734375 2.734375 1.953125 -0.390625 2.734375 1.953125 2.734375 -2.734375 1.953125 1.171875 1.171875 1.171875 1.953125 1.953125 2.734375 -2.734375 -2.734375 -1.171875 1.171875 -2.734375 0.390625 1.953125 -2.734375 2.734375 -2.734375 -2.734375 2.734375 0.390625 1.953125 -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" >
89.496 90.0 95.0 100.0 105.0 110.0 111.91 113.82 115.0 115.73 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 396.931 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.222 2.859 3.195 3.303 3.18 3.18 3.256 3.303 3.444 3.594 3.736 3.873 4.009 4.143 4.278 4.413 4.549 4.687 4.826 4.967 5.108 5.251 5.395 5.539 5.684 5.828 5.973 6.118 6.262 6.406 6.549 6.691 6.832 6.972 7.112 7.25 7.387 7.523 7.658 7.792 7.925 8.057 8.188 8.318 8.447 8.575 8.703 8.829 8.955 9.079 9.203 9.325 9.446 9.564 9.681 9.795 9.904 10.009 10.107 10.196 10.273 10.334 10.377 10.398 10.4 10.399 10.393 10.383 10.367 10.347 10.322 10.293 10.26 10.223 10.182 10.138 10.09 10.039 9.984 9.927 9.867 9.804 9.739 9.671 9.602 9.53 9.456 9.38 9.303 9.224 9.144 9.062 8.979 8.895 8.81 8.724 8.637 8.55 8.462 8.373 8.284 8.194 8.105 8.015 7.924 7.834 7.744 7.653 7.563 7.473 7.383 7.293 7.203 7.114 7.025 6.937 6.849 6.761 6.674 6.587 6.501 6.416 6.331 6.247 6.163 6.08 5.998 5.916 5.835 5.755 5.676 5.597 5.519 5.442 5.365 5.29 5.215 5.141 5.068 4.995 4.924 4.853 4.783 4.714 4.645 4.577 4.511 4.445 4.38 4.315 4.252 4.189 4.127 4.066 4.005 3.946 3.887 3.829 3.771 3.715 3.659 3.604 3.55 3.496 3.443 3.391 3.34 3.289 3.239 3.19 3.141 3.093 3.046 3.0 2.954 2.909 2.864 2.82 2.777 2.734 2.692 2.651 2.61 2.57 2.53 2.491

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.303" PeakHeight="110.0" Num="3" Error="0.0">
-30.437 13.057 -3.124
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.303" EndFrequency="10.4" PeakHeight="396.931" Num="5" zHalfNm="258.795" Error="3.678">
-247.346 -53.592 25.21 -8.184 2.711
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.73" Depth="0.123"/>
<TopsideChapman PeakHeight="396.931" PeakDensity="1341935.5" PeakScaleHeight="98.239" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
