<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 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="15.0">
<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" >
2026.10.17 (290) 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">
FF202629010171620009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="1.990" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.498" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="400.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="400.000" 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="9.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="672.395" 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="3.298" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.318" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="483.471" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="298.727" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.492" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="237.076" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="73.914" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="130.269" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="297.220" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.370" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="85">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
400.000 400.000 405.000 405.000 410.000 410.000 415.000 420.000 420.000 425.000 425.000 430.000 430.000 440.000 445.000 450.000 450.000 450.000 453.333 456.667 460.000 465.000 470.000 475.000 475.000 480.195 485.389 490.584 495.778 500.973 506.168 511.362 516.557 521.751 526.946 532.141 537.335 542.530 547.725 552.919 558.114 563.308 568.503 573.698 578.892 584.087 589.281 594.476 599.671 604.865 610.060 615.254 620.449 625.644 630.838 636.033 641.228 646.422 651.617 656.811 662.006 667.201 672.395 677.590 682.784 687.979 693.174 698.368 703.563 708.757 713.952 719.147 725.000 735.000 740.000 750.000 760.000 775.000 785.000 800.000 815.000 830.000 850.000 875.000 898.860
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 69 63 72 69 72 69 66 72 69 63 69 0 69 63 63 66 0 66 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 2.734375 2.734375 0.390625 1.171875 0.390625 -0.390625 -2.734375 -1.953125 0.390625 -0.390625 -0.390625 0.390625 1.953125 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 -1.171875 2.734375 0.390625 1.171875 2.734375 -1.171875 -0.390625 -0.390625 -2.734375 0.390625 -2.734375 1.953125 1.953125 1.171875 -1.171875 0.390625 -1.953125 2.734375 -0.390625 -1.953125 -0.390625 -1.171875 -1.953125 -1.171875 -0.390625 -0.390625 0.390625 -1.171875 0.390625 -1.171875 0.390625 -1.953125 -0.390625 2.734375 -1.953125 2.734375 0.390625 1.171875 -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" >
89.498 90.0 95.0 100.0 105.0 110.0 111.93 113.859 115.0 115.789 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 483.471 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.218 2.854 3.191 3.298 3.176 3.176 3.248 3.298 3.406 3.523 3.633 3.739 3.843 3.946 4.048 4.151 4.254 4.357 4.462 4.568 4.675 4.783 4.892 5.002 5.113 5.225 5.338 5.451 5.564 5.677 5.79 5.903 6.016 6.128 6.24 6.351 6.461 6.57 6.679 6.786 6.893 6.998 7.103 7.207 7.309 7.411 7.512 7.612 7.711 7.81 7.907 8.004 8.101 8.196 8.291 8.385 8.479 8.572 8.664 8.756 8.847 8.938 9.028 9.118 9.207 9.295 9.383 9.469 9.555 9.639 9.722 9.803 9.881 9.957 10.028 10.094 10.155 10.207 10.249 10.279 10.296 10.3 10.3 10.297 10.292 10.284 10.273 10.26 10.244 10.226 10.205 10.181 10.156 10.128 10.098 10.066 10.032 9.996 9.959 9.919 9.878 9.835 9.79 9.744 9.697 9.648 9.598 9.546 9.493 9.44 9.385 9.329 9.272 9.214 9.155 9.095 9.035 8.974 8.912 8.85 8.786 8.723 8.659 8.594 8.529 8.464 8.398 8.332 8.265 8.199 8.132 8.065 7.998 7.931 7.863 7.796 7.728 7.661 7.593 7.526 7.458 7.391 7.324 7.257 7.19 7.123 7.056 6.99 6.924 6.858 6.792 6.726 6.661 6.596 6.532 6.467 6.403 6.339 6.276 6.213 6.15 6.088 6.026 5.964 5.903 5.843 5.782 5.722 5.663 5.603 5.545 5.486 5.429 5.371 5.314 5.258 5.201 5.146 5.091 5.036 4.981 4.928 4.874 4.821 4.769 4.717

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.298" PeakHeight="110.0" Num="3" Error="0.0">
-30.433 13.052 -3.121
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.298" EndFrequency="10.3" PeakHeight="483.471" Num="5" zHalfNm="298.727" Error="5.692">
-324.453 -70.214 36.109 -13.592 4.468
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.789" Depth="0.122"/>
<TopsideChapman PeakHeight="483.471" PeakDensity="1316253.1" PeakScaleHeight="130.269" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
