<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 11:00:00.000"
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: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.10.16 (289) 11:00:00</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">
FF202628910161100009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.003" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.079" 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="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="295.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="295.000" 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="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="396.269" 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="2.827" 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="/" />
<URSI ID="92" Val="291.938" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="222.176" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.947" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="91.847" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="29.985" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="51.048" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="122.210" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.170" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="91">
<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 10.35
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 297.500 300.000 300.000 300.000 300.000 301.619 303.237 304.856 306.475 308.094 309.712 311.331 312.950 314.569 316.187 317.806 319.425 321.043 322.662 324.281 325.900 327.518 329.137 330.756 332.375 333.993 335.612 337.231 338.850 340.468 342.087 343.706 345.324 346.943 348.562 350.181 351.799 353.418 355.037 356.656 358.274 359.893 361.512 363.130 364.749 366.368 367.987 369.605 371.224 372.843 374.462 376.080 377.699 379.318 380.937 382.555 384.174 385.489 387.001 388.757 390.821 393.283 396.269 399.967 404.666 410.000 420.000 430.000 450.000 487.206
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 69 0 0 75 72 75 78 0 0 75 0 69 0 72 0 75 0 0 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
</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 2.734375 0.390625 0.390625 -0.390625 -0.390625 1.171875 1.953125 -1.953125 1.953125 1.171875 1.953125 -1.953125 -0.390625 -0.390625 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 1.953125 -1.171875 0.390625 -1.171875 0.390625 -1.171875 -2.734375 -2.734375 1.171875 1.953125 1.171875 -0.390625 -0.390625 -0.390625 1.953125 1.171875 2.734375 -1.171875 -2.734375 0.390625 0.390625 2.734375 2.734375 2.734375 1.953125 -2.734375 1.953125 -2.734375 -0.390625 2.734375 1.953125 -2.734375 2.734375 -1.953125 -1.171875 -0.390625 2.734375 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" >
89.576 90.0 95.0 100.0 105.0 110.0 114.007 115.0 118.015 120.0 122.022 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 291.938 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.9 2.447 2.735 2.827 2.705 2.705 2.705 2.765 2.827 2.975 3.224 3.468 3.705 3.934 4.158 4.377 4.593 4.807 5.02 5.232 5.444 5.657 5.872 6.088 6.307 6.529 6.754 6.983 7.216 7.453 7.695 7.942 8.193 8.448 8.707 8.967 9.227 9.482 9.726 9.949 10.138 10.275 10.344 10.35 10.346 10.326 10.287 10.233 10.164 10.08 9.984 9.877 9.76 9.633 9.498 9.355 9.207 9.052 8.894 8.731 8.565 8.396 8.226 8.054 7.881 7.708 7.535 7.363 7.191 7.02 6.851 6.683 6.517 6.353 6.192 6.033 5.876 5.722 5.57 5.422 5.276 5.133 4.993 4.856 4.722 4.591 4.463 4.338 4.216 4.097 3.981 3.867 3.757 3.649 3.544 3.442 3.342 3.245 3.151 3.059 2.97 2.883 2.799 2.716 2.637 2.559 2.484 2.41 2.339 2.27 2.203 2.137 2.074 2.012 1.952 1.894 1.838 1.783 1.73 1.678 1.628 1.579 1.532 1.486 1.442 1.399 1.357 1.316 1.277 1.238 1.201 1.165 1.13 1.096 1.063 1.032 1.001 0.97 0.941 0.913 0.886 0.859 0.833 0.808 0.784 0.76 0.737 0.715 0.694 0.673 0.652 0.633 0.614 0.595 0.577 0.56 0.543 0.527 0.511 0.496 0.481 0.466 0.452 0.438 0.425 0.412 0.4 0.388 0.376 0.365 0.354 0.343 0.333 0.323 0.313 0.304 0.295 0.286 0.277 0.269 0.261 0.253 0.245 0.238 0.231 0.224

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.827" PeakHeight="110.0" Num="3" Error="0.0">
-30.044 12.482 -2.862
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.827" EndFrequency="10.35" PeakHeight="291.938" Num="5" zHalfNm="222.176" Error="1.96">
-144.56 -38.651 14.358 -0.518 -0.545
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="12.022" Depth="0.122"/>
<TopsideChapman PeakHeight="291.938" PeakDensity="1329063.2" PeakScaleHeight="51.048" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
