<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 17:20:00.000"
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) 17:20:00</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">
FF202628510121720009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.327" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.671" 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="10.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="345.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="345.000" 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="567.087" 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="3.133" 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="4.239" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="412.396" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.639" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.928" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="181.067" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.498" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="100.537" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="222.570" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.430" 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" >
5.8 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" >
345.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 390.000 390.000 390.000 395.000 395.000 395.000 398.073 401.146 404.219 407.292 410.365 413.438 416.511 419.584 422.657 425.730 428.803 431.876 434.949 438.022 441.095 444.168 447.241 450.314 453.387 456.460 459.533 462.606 465.679 468.752 471.825 474.898 477.971 481.044 484.117 487.190 490.263 493.336 496.409 499.482 502.555 505.628 508.701 511.774 514.847 517.920 520.993 524.066 527.139 530.212 533.285 536.358 539.431 542.504 545.577 548.650 551.723 554.796 557.869 560.941 564.014 567.087 570.160 573.233 580.000 585.000 590.000 600.000 610.000 620.000 630.000 645.000 670.000 695.000 730.000 779.427
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 54 63 66 69 66 69 69 69 69 66 69 72 69 72 72 72 75 72 75 75 72 75 72 72 72 72 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 45 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 -2.734375 -0.390625 -1.171875 1.953125 0.390625 -0.390625 -0.390625 -1.171875 -1.953125 2.734375 0.390625 -1.953125 2.734375 -1.171875 -1.171875 2.734375 -0.390625 2.734375 -1.171875 1.953125 -0.390625 1.953125 1.171875 -2.734375 2.734375 -2.734375 -2.734375 -2.734375 -0.390625 0.390625 -0.390625 -1.171875 2.734375 -1.171875 1.953125 1.953125 -1.953125 -1.953125 1.953125 2.734375 -2.734375 -1.953125 1.953125 -0.390625 -2.734375 0.390625 -1.953125 2.734375 1.171875 0.390625 1.171875 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" >
89.523 90.0 95.0 100.0 105.0 110.0 112.629 115.0 115.259 117.888 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 412.396 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.107 2.712 3.031 3.133 3.011 3.011 3.011 3.133 3.196 3.342 3.485 3.626 3.765 3.903 4.04 4.176 4.311 4.446 4.581 4.715 4.85 4.984 5.119 5.254 5.389 5.524 5.66 5.797 5.934 6.071 6.209 6.348 6.487 6.627 6.767 6.908 7.049 7.191 7.334 7.477 7.621 7.765 7.909 8.053 8.198 8.343 8.487 8.632 8.775 8.918 9.059 9.199 9.337 9.473 9.605 9.734 9.858 9.976 10.088 10.192 10.287 10.371 10.444 10.505 10.551 10.582 10.598 10.6 10.599 10.594 10.584 10.569 10.55 10.526 10.499 10.467 10.431 10.391 10.348 10.302 10.252 10.199 10.143 10.084 10.023 9.959 9.893 9.825 9.754 9.682 9.608 9.532 9.454 9.375 9.294 9.213 9.13 9.046 8.961 8.875 8.789 8.702 8.614 8.525 8.437 8.347 8.258 8.168 8.078 7.989 7.898 7.808 7.719 7.629 7.539 7.45 7.36 7.271 7.183 7.095 7.007 6.919 6.832 6.746 6.66 6.575 6.49 6.406 6.322 6.239 6.157 6.075 5.994 5.914 5.834 5.756 5.677 5.6 5.523 5.448 5.372 5.298 5.225 5.152 5.08 5.008 4.938 4.868 4.799 4.731 4.664 4.598 4.532 4.467 4.403 4.339 4.277 4.215 4.154 4.094 4.034 3.975 3.917 3.86 3.803 3.748 3.692 3.638 3.585 3.532 3.479 3.428 3.377 3.327 3.278 3.229 3.181 3.133 3.087 3.041 2.995 2.95 2.906 2.862 2.82 2.777

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.133" PeakHeight="110.0" Num="3" Error="0.0">
-30.304 12.862 -3.035
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.133" EndFrequency="10.6" PeakHeight="412.396" Num="5" zHalfNm="275.639" Error="1.972">
-264.248 -45.683 16.759 -1.419 0.083
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.888" Depth="0.122"/>
<TopsideChapman PeakHeight="412.396" PeakDensity="1394044.6" PeakScaleHeight="100.537" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
