<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 20:20:00.000"
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" >
2026.10.12 (285) 20:20:00</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">
FF202628510122020009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.393" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.010" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="9.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="541.130" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.667" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="412.634" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="303.417" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.414" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="153.487" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.533" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="79.513" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="168.250" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="97">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.65 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 325.000 330.000 335.000 337.500 340.000 340.000 345.000 345.000 350.000 350.000 350.000 355.000 355.000 360.000 360.000 365.000 370.000 370.000 370.000 375.000 375.000 380.000 385.000 385.000 385.000 390.000 390.000 395.000 395.000 395.000 397.865 400.731 403.596 406.461 409.326 412.192 415.057 417.922 420.788 423.653 426.518 429.384 432.249 435.114 437.979 440.845 443.710 446.575 449.441 452.306 455.171 458.036 460.902 463.767 466.632 469.498 472.363 475.228 478.094 480.959 483.824 486.689 489.555 492.420 495.285 498.151 501.016 503.881 506.747 509.612 512.477 515.342 518.208 521.073 523.938 526.804 529.669 532.534 535.399 538.265 541.130 545.468 550.205 555.000 560.000 570.000 575.000 580.000 590.000 600.000 615.000 625.000 640.000 660.000 682.948
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 75 66 75 78 72 75 69 75 75 75 75 75 78 75 66 75 78 75 78 75 69 75 75 75 75 75 78 75 0 0 69 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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 0.390625 -1.171875 1.953125 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 0.390625 -1.171875 1.953125 -0.390625 -0.390625 0.390625 -1.953125 1.953125 -1.171875 -1.953125 -2.734375 -0.390625 -1.171875 -0.390625 -2.734375 2.734375 -0.390625 -2.734375 -1.171875 -2.734375 -2.734375 -1.171875 1.953125 0.390625 0.390625 -1.171875 -0.390625 1.171875 1.171875 -0.390625 2.734375 1.953125 1.171875 2.734375 2.734375 1.953125 -1.953125 -1.171875 0.390625 1.171875 -1.171875 -0.390625 -2.734375 1.953125 -1.953125 1.171875 -1.171875 -1.171875 -2.734375 1.171875 -1.953125
</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" >
89.867 90.0 95.0 100.0 105.0 110.0 115.0 120.0 120.158 125.0 130.0 130.317 135.0 140.0 140.475 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 412.634 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.212 1.115 1.444 1.613 1.667 1.634 1.531 1.526 1.526 1.526 1.526 1.591 1.66 1.667 1.784 1.911 2.04 2.172 2.308 2.45 2.599 2.753 2.914 3.082 3.256 3.435 3.619 3.806 3.997 4.19 4.385 4.581 4.777 4.973 5.169 5.364 5.558 5.751 5.944 6.135 6.326 6.515 6.704 6.891 7.078 7.263 7.448 7.631 7.813 7.995 8.175 8.353 8.53 8.705 8.878 9.049 9.216 9.379 9.538 9.69 9.835 9.97 10.094 10.203 10.296 10.369 10.42 10.446 10.45 10.449 10.441 10.426 10.404 10.374 10.338 10.296 10.247 10.193 10.134 10.069 10.0 9.927 9.849 9.768 9.683 9.595 9.503 9.409 9.312 9.213 9.112 9.009 8.905 8.799 8.691 8.583 8.473 8.363 8.252 8.14 8.028 7.916 7.804 7.692 7.58 7.468 7.356 7.245 7.134 7.024 6.915 6.806 6.698 6.59 6.484 6.378 6.273 6.17 6.067 5.965 5.865 5.765 5.667 5.57 5.474 5.379 5.285 5.193 5.102 5.012 4.923 4.836 4.749 4.664 4.581 4.498 4.417 4.337 4.258 4.18 4.104 4.029 3.955 3.882 3.81 3.74 3.671 3.603 3.536 3.47 3.405 3.341 3.279 3.217 3.157 3.098 3.039 2.982 2.926 2.87 2.816 2.763 2.71 2.659 2.608 2.559 2.51 2.462 2.415 2.369 2.324 2.28 2.236 2.193 2.151 2.11 2.07 2.03 1.991 1.953 1.915 1.878 1.842 1.807 1.772 1.738 1.704

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.667" PeakHeight="110.0" Num="3" Error="0.0">
-28.489 10.35 -1.994
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.667" EndFrequency="10.45" PeakHeight="412.634" Num="5" zHalfNm="303.417" Error="3.986">
-255.25 -30.706 20.376 -9.178 2.599
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="30.475" Depth="0.141"/>
<TopsideChapman PeakHeight="412.634" PeakDensity="1354869.8" PeakScaleHeight="79.513" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
