<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 19:20:00.000"
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 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) 19:20:00</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">
FF202628910161920009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.624" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.435" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.000" 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="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" 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="2.426" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="366.758" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="268.952" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.439" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="135.225" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.390" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="72.413" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="156.510" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.490" 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" >
5.9 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 11.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 311.667 313.333 315.000 316.667 318.333 320.000 320.000 321.000 322.000 323.000 324.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 331.000 332.000 333.000 334.000 335.000 335.000 336.842 338.684 340.526 342.368 344.211 346.053 347.895 349.737 351.579 353.421 355.263 357.105 358.947 360.789 362.632 364.474 366.316 368.158 370.000 371.842 373.684 375.526 377.368 379.211 381.053 382.895 384.737 386.579 388.421 390.263 392.105 393.947 395.789 397.632 399.474 401.316 403.158 405.000 406.842 408.684 410.526 412.368 414.211 416.053 417.895 419.737 421.579 423.421 425.263 427.105 428.947 430.789 432.632 434.474 436.316 438.158 440.000 441.842 443.684 445.526 447.368 449.211 451.053 452.895 454.737 456.579 458.421 460.263 462.105 463.947 465.789 467.632 469.474 471.316 473.158 475.000 480.000 485.000 490.000 495.000 505.000 515.000 525.000 535.000 549.037 566.556 589.037 618.935 660.645
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 66 0 0 0 69 0 0 0 0 72 72 75 75 72 75 75 72 0 0 0 0 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 63 60 60 57 57 57 57 57 57 54 57 54 48 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 -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 -1.171875 -2.734375 -0.390625 2.734375 -0.390625 -1.171875 -0.390625 2.734375 1.953125 1.171875 1.171875 2.734375 -1.953125 -1.171875 -2.734375 2.734375 -1.953125 2.734375 -0.390625 1.171875 -1.953125 2.734375 1.953125 1.171875 2.734375 0.390625 -1.953125 1.171875 1.171875 -2.734375 2.734375 -0.390625 -1.953125 1.953125 2.734375 -1.953125 -1.171875 -1.171875 -1.171875 2.734375 2.734375 -0.390625 -2.734375 -0.390625 -1.171875 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
</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" >
89.655 90.0 95.0 100.0 105.0 110.0 115.0 115.956 120.0 121.911 125.0 127.867 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 366.758 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.628 2.101 2.347 2.426 2.338 2.301 2.301 2.301 2.366 2.426 2.502 2.681 2.863 3.046 3.232 3.419 3.608 3.8 3.993 4.188 4.385 4.585 4.786 4.989 5.194 5.401 5.609 5.82 6.033 6.247 6.463 6.681 6.901 7.122 7.345 7.57 7.796 8.022 8.25 8.479 8.707 8.936 9.164 9.391 9.616 9.838 10.056 10.268 10.474 10.67 10.855 11.027 11.181 11.316 11.428 11.514 11.571 11.598 11.6 11.598 11.586 11.564 11.532 11.491 11.442 11.385 11.32 11.247 11.169 11.083 10.992 10.896 10.795 10.689 10.579 10.465 10.347 10.227 10.104 9.978 9.85 9.72 9.588 9.455 9.321 9.186 9.05 8.914 8.777 8.641 8.504 8.367 8.231 8.095 7.96 7.826 7.692 7.559 7.427 7.296 7.167 7.038 6.911 6.786 6.661 6.538 6.417 6.297 6.178 6.061 5.946 5.832 5.72 5.61 5.501 5.394 5.289 5.185 5.083 4.982 4.883 4.786 4.691 4.597 4.504 4.414 4.325 4.237 4.151 4.067 3.984 3.903 3.823 3.745 3.668 3.592 3.518 3.446 3.375 3.305 3.236 3.169 3.104 3.039 2.976 2.914 2.853 2.793 2.735 2.678 2.622 2.567 2.513 2.46 2.409 2.358 2.308 2.26 2.212 2.166 2.12 2.075 2.032 1.989 1.947 1.906 1.865 1.826 1.787 1.749 1.712 1.676 1.641 1.606 1.572 1.538 1.506 1.474 1.443 1.412 1.382 1.353 1.324 1.296 1.268 1.241

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.426" PeakHeight="110.0" Num="3" Error="0.0">
-29.631 11.893 -2.607
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.426" EndFrequency="11.6" PeakHeight="366.758" Num="5" zHalfNm="268.952" Error="1.659">
-218.308 -32.472 13.915 -2.225 0.199
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="17.867" Depth="0.125"/>
<TopsideChapman PeakHeight="366.758" PeakDensity="1669478.9" PeakScaleHeight="72.413" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
