<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 17:00:00.000"
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) 17:00:00</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">
FF202628510121700009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.270" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.378" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="88" Val="9.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="597.143" 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="3.200" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.272" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="410.941" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="265.697" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.797" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="189.167" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.025" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="104.098" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="232.410" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.420" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="90">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 340.000 345.000 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 390.000 390.000 395.000 395.000 400.000 400.000 401.667 403.333 405.000 409.088 413.176 417.264 421.353 425.441 429.529 433.617 437.705 441.793 445.882 449.970 454.058 458.146 462.234 466.322 470.410 474.499 478.587 482.675 486.763 490.851 494.939 499.028 503.116 507.204 511.292 515.380 519.468 523.556 527.645 531.733 535.821 539.909 543.997 548.085 552.173 556.262 560.350 564.438 568.526 572.614 576.702 580.791 584.879 588.967 593.055 597.143 601.231 605.319 609.408 615.000 625.000 635.000 645.000 660.000 675.000 700.000 730.000 773.126
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 63 63 63 66 63 66 66 60 66 63 69 66 69 69 66 69 63 66 63 69 63 66 60 69 63 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 -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 1.953125 2.734375 -0.390625 1.171875 -2.734375 -2.734375 0.390625 1.171875 0.390625 -1.953125 1.953125 -1.171875 0.390625 -1.953125 -1.953125 0.390625 -1.171875 -0.390625 1.953125 -1.171875 2.734375 1.171875 1.953125 0.390625 -1.171875 -2.734375 1.171875 -1.171875 -2.734375 -0.390625 1.953125 0.390625 1.171875 -2.734375 -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" >
89.513 90.0 95.0 100.0 105.0 110.0 112.341 114.683 115.0 117.024 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 410.941 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.152 2.769 3.096 3.2 3.078 3.078 3.095 3.2 3.292 3.436 3.573 3.707 3.839 3.97 4.101 4.233 4.365 4.499 4.635 4.771 4.909 5.047 5.186 5.327 5.467 5.608 5.749 5.89 6.03 6.171 6.31 6.449 6.587 6.725 6.861 6.996 7.131 7.265 7.397 7.529 7.66 7.789 7.918 8.046 8.173 8.299 8.424 8.548 8.671 8.792 8.913 9.032 9.15 9.267 9.381 9.493 9.602 9.708 9.81 9.906 9.996 10.078 10.151 10.211 10.257 10.287 10.3 10.3 10.298 10.293 10.282 10.268 10.249 10.226 10.2 10.17 10.136 10.099 10.059 10.015 9.969 9.92 9.868 9.814 9.757 9.698 9.636 9.573 9.507 9.44 9.371 9.301 9.229 9.155 9.081 9.005 8.928 8.849 8.77 8.691 8.61 8.529 8.447 8.364 8.281 8.198 8.114 8.03 7.946 7.862 7.778 7.693 7.609 7.524 7.44 7.356 7.272 7.188 7.104 7.021 6.938 6.855 6.773 6.691 6.61 6.529 6.448 6.368 6.289 6.21 6.132 6.054 5.977 5.9 5.824 5.749 5.674 5.6 5.527 5.454 5.382 5.311 5.24 5.17 5.101 5.032 4.964 4.897 4.831 4.765 4.7 4.636 4.572 4.509 4.447 4.385 4.325 4.265 4.205 4.147 4.089 4.031 3.975 3.919 3.864 3.809 3.756 3.702 3.65 3.598 3.547 3.497 3.447 3.398 3.349 3.301 3.254 3.207 3.161 3.116 3.071 3.027 2.983 2.94 2.897 2.855

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.2" PeakHeight="110.0" Num="3" Error="0.0">
-30.357 12.94 -3.07
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.2" EndFrequency="10.3" PeakHeight="410.941" Num="5" zHalfNm="265.697" Error="3.234">
-263.457 -48.755 23.482 -7.557 2.37
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.024" Depth="0.122"/>
<TopsideChapman PeakHeight="410.941" PeakDensity="1316253.1" PeakScaleHeight="104.098" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
