<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 13:00:00.000"
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="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) 13:00:00</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">
FF202629010171300009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.591" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.850" 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="11.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="10.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="486.856" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.289" 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="4.313" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="352.498" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="243.516" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.113" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="143.160" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.707" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.053" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="179.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.390" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="100">
<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 10.65 10.7 10.75
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 328.333 326.667 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 327.480 329.960 332.439 334.919 337.399 339.879 342.358 344.838 347.318 349.798 352.277 354.757 357.237 359.717 362.196 364.676 367.156 369.636 372.116 374.595 377.075 379.555 382.035 384.514 386.994 389.474 391.954 394.433 396.913 399.393 401.873 404.352 406.832 409.312 411.792 414.272 416.751 419.231 421.711 424.191 426.670 429.150 431.630 434.110 436.589 439.069 441.549 444.029 446.508 448.988 451.468 453.948 456.427 458.907 461.387 463.867 466.347 468.826 471.306 473.843 476.625 479.689 483.081 486.856 491.082 495.848 500.000 510.000 515.000 525.000 535.000 545.000 560.000 580.000 605.000 635.406
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 0 0 0 54 0 57 0 0 69 69 75 75 63 0 69 69 72 72 72 72 72 75 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 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 -1.171875 -1.171875 1.171875 -2.734375 -1.953125 -2.734375 -1.171875 2.734375 0.390625 -0.390625 1.171875 -2.734375 -0.390625 -2.734375 -1.953125 -1.953125 -2.734375 -2.734375 0.390625 -1.953125 -0.390625 2.734375 -2.734375 -1.171875 0.390625 -1.171875 1.171875 -1.171875 -1.171875 -1.171875 2.734375 -2.734375 1.953125 -1.953125 -0.390625 -2.734375 -0.390625 2.734375 -0.390625 -0.390625 1.953125 2.734375 1.953125 -1.171875 2.734375 -1.953125 0.390625 2.734375 2.734375 -1.953125 0.390625 0.390625 -1.953125 1.171875 0.390625 -1.953125 1.171875 1.953125 -2.734375 1.171875 -1.171875 1.171875 1.953125 -1.953125 -2.734375 -0.390625 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" >
89.5 90.0 95.0 100.0 105.0 110.0 111.968 113.937 115.0 115.905 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 352.498 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.212 2.846 3.182 3.289 3.167 3.167 3.233 3.289 3.452 3.635 3.807 3.973 4.135 4.295 4.454 4.613 4.772 4.932 5.092 5.254 5.416 5.58 5.745 5.912 6.08 6.25 6.421 6.593 6.767 6.943 7.119 7.297 7.475 7.655 7.835 8.016 8.198 8.38 8.561 8.742 8.923 9.102 9.279 9.454 9.625 9.792 9.952 10.104 10.247 10.377 10.493 10.59 10.667 10.72 10.747 10.75 10.749 10.741 10.725 10.702 10.672 10.635 10.592 10.543 10.488 10.427 10.362 10.291 10.216 10.137 10.054 9.968 9.878 9.785 9.689 9.59 9.489 9.386 9.281 9.175 9.066 8.957 8.846 8.734 8.622 8.508 8.394 8.28 8.166 8.051 7.937 7.822 7.708 7.594 7.48 7.367 7.254 7.142 7.03 6.919 6.81 6.7 6.592 6.485 6.379 6.274 6.169 6.066 5.964 5.863 5.764 5.665 5.568 5.472 5.377 5.283 5.191 5.1 5.01 4.921 4.834 4.748 4.663 4.579 4.497 4.416 4.336 4.257 4.18 4.104 4.029 3.955 3.883 3.811 3.741 3.672 3.604 3.537 3.472 3.407 3.344 3.282 3.22 3.16 3.101 3.043 2.986 2.93 2.875 2.821 2.767 2.715 2.664 2.614 2.564 2.516 2.468 2.421 2.375 2.33 2.286 2.242 2.2 2.158 2.117 2.076 2.037 1.998 1.96 1.922 1.886 1.85 1.814 1.78 1.746 1.712 1.679 1.647 1.616 1.585 1.554 1.524 1.495 1.466 1.438 1.411

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.289" PeakHeight="110.0" Num="3" Error="0.0">
-30.426 13.042 -3.116
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.289" EndFrequency="10.75" PeakHeight="352.498" Num="5" zHalfNm="243.516" Error="3.302">
-208.613 -40.881 13.309 -1.028 0.62
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.905" Depth="0.122"/>
<TopsideChapman PeakHeight="352.498" PeakDensity="1433777.9" PeakScaleHeight="80.053" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
