<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 19:10:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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) 19:10:00</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">
FF202628910161910009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.580" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.802" 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="11.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="2.512" 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="376.621" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="270.872" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.414" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="146.064" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.098" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="78.546" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="166.850" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="115">
<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 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.000 310.000 310.000 312.500 315.000 315.000 315.000 315.000 315.000 320.000 320.000 321.250 322.500 323.750 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 340.000 340.000 341.987 343.974 345.962 347.949 349.936 351.923 353.910 355.897 357.885 359.872 361.859 363.846 365.833 367.821 369.808 371.795 373.782 375.769 377.756 379.744 381.731 383.718 385.705 387.692 389.679 391.667 393.654 395.641 397.628 399.615 401.603 403.590 405.577 407.564 409.551 411.538 413.526 415.513 417.500 419.487 421.474 423.462 425.449 427.436 429.423 431.410 433.397 435.385 437.372 439.359 441.346 443.333 445.321 447.308 449.295 451.282 453.269 455.256 457.244 459.231 461.218 463.205 465.192 467.179 469.167 471.154 473.141 475.128 477.115 479.103 481.090 483.077 485.064 487.051 489.038 491.026 493.013 495.000 500.000 510.000 520.000 525.000 540.000 555.000 570.000 591.647 619.338 656.012 706.889
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 0 72 72 0 72 72 0 0 72 75 75 0 0 48 75 75 75 72 75 75 75 72 75 60 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 0 0 0 0 0 0 0 0 0 0 0 51 42 54 57 57 54 54 54 51 45 42 45
</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 1.171875 0.390625 0.390625 0.390625 0.390625 -0.390625 1.953125 1.171875 1.171875 1.171875 -1.953125 1.953125 -2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 2.734375 -1.171875 -1.953125 -0.390625 2.734375 1.953125 -2.734375 2.734375 -2.734375 0.390625 -2.734375 1.953125 -1.953125 0.390625 -0.390625 -1.171875 1.171875 -2.734375 2.734375 1.953125 -0.390625 1.171875 1.953125 -2.734375 2.734375 2.734375 -1.171875 1.171875 -2.734375 -0.390625 -1.953125 -0.390625 -1.171875 0.390625 2.734375 -2.734375 -2.734375 1.953125 -1.171875 1.953125 -0.390625 0.390625 -0.390625 1.171875 0.390625 1.953125 -2.734375 1.171875 -0.390625 -1.953125 -0.390625 -1.953125 2.734375 2.734375 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
</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" >
89.638 90.0 95.0 100.0 105.0 110.0 115.0 115.521 120.0 121.043 125.0 126.564 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 376.621 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.23 1.687 2.175 2.431 2.512 2.411 2.388 2.388 2.388 2.477 2.512 2.626 2.796 2.969 3.144 3.322 3.502 3.684 3.869 4.055 4.243 4.432 4.624 4.817 5.012 5.208 5.407 5.607 5.809 6.012 6.217 6.424 6.633 6.843 7.054 7.267 7.481 7.696 7.912 8.129 8.346 8.564 8.781 8.997 9.212 9.425 9.636 9.842 10.045 10.241 10.431 10.612 10.783 10.942 11.086 11.215 11.325 11.415 11.483 11.528 11.549 11.55 11.548 11.537 11.518 11.491 11.456 11.414 11.365 11.309 11.246 11.178 11.104 11.025 10.942 10.853 10.76 10.664 10.564 10.46 10.354 10.244 10.132 10.018 9.902 9.784 9.665 9.544 9.422 9.299 9.175 9.05 8.925 8.8 8.675 8.549 8.424 8.298 8.173 8.049 7.925 7.801 7.678 7.556 7.435 7.315 7.195 7.077 6.959 6.843 6.728 6.614 6.501 6.39 6.28 6.171 6.063 5.957 5.852 5.749 5.646 5.546 5.446 5.348 5.252 5.157 5.063 4.971 4.88 4.79 4.702 4.615 4.53 4.446 4.363 4.282 4.202 4.123 4.046 3.97 3.895 3.822 3.75 3.679 3.609 3.54 3.473 3.407 3.342 3.278 3.216 3.154 3.094 3.034 2.976 2.919 2.863 2.808 2.753 2.7 2.648 2.597 2.547 2.498 2.449 2.402 2.355 2.31 2.265 2.221 2.178 2.135 2.094 2.053 2.013 1.974 1.935 1.898 1.861 1.824 1.789 1.754 1.719 1.686 1.653 1.621 1.589

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.512" PeakHeight="110.0" Num="3" Error="0.0">
-29.728 12.03 -2.664
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.512" EndFrequency="11.55" PeakHeight="376.621" Num="5" zHalfNm="270.872" Error="1.981">
-231.253 -29.32 12.195 -1.695 0.016
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="16.564" Depth="0.124"/>
<TopsideChapman PeakHeight="376.621" PeakDensity="1655117.9" PeakScaleHeight="78.546" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
