<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-09 -282 19:40:00.000"
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="18.0">
<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" >
2026.10.09 (282) 19:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628210091940009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.505" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.552" 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="11.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="530.000" 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="2.244" 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="386.018" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="283.501" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.468" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="141.434" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.337" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.513" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="165.250" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.420" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="111">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 322.500 325.000 325.000 325.000 325.000 327.500 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 357.333 359.667 362.000 364.333 366.667 369.000 371.333 373.667 376.000 378.333 380.667 383.000 385.333 387.667 390.000 392.333 394.667 397.000 399.333 401.667 404.000 406.333 408.667 411.000 413.333 415.667 418.000 420.333 422.667 425.000 427.333 429.667 432.000 434.333 436.667 439.000 441.333 443.667 446.000 448.333 450.667 453.000 455.333 457.667 460.000 462.333 464.667 467.000 469.333 471.667 474.000 476.333 478.667 481.000 483.333 485.667 488.000 490.333 492.667 495.000 497.333 499.667 502.000 504.333 506.667 509.000 511.333 513.667 516.000 518.333 520.667 523.000 525.333 527.667 530.000 540.000 545.000 560.000 570.000 580.000 600.000 620.000 650.649
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 72 54 60 69 51 75 0 69 72 60 66 72 72 72 75 78 78 78 78 72 75 81 69 75 78 66 72 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 63 63 60 57 54 54 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 1.171875 -0.390625 2.734375 1.171875 -1.171875 0.390625 1.171875 -2.734375 -1.953125 2.734375 0.390625 -2.734375 -2.734375 2.734375 -1.171875 0.390625 1.171875 -1.953125 -2.734375 2.734375 1.953125 1.171875 2.734375 -1.953125 -2.734375 2.734375 2.734375 -0.390625 -1.171875 -1.953125 -0.390625 -1.953125 1.171875 2.734375 -1.171875 2.734375 2.734375 0.390625 -2.734375 -2.734375 2.734375 -2.734375 -1.953125 -2.734375 1.171875 2.734375 2.734375 -1.171875 0.390625 2.734375 -2.734375 -1.171875 1.953125 1.171875 0.390625 -1.953125 -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" >
89.697 90.0 95.0 100.0 105.0 110.0 115.0 116.897 120.0 123.793 125.0 130.0 130.69 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 386.018 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.226 1.505 1.943 2.171 2.244 2.177 2.116 2.116 2.116 2.138 2.231 2.244 2.391 2.558 2.725 2.894 3.064 3.238 3.415 3.595 3.778 3.964 4.153 4.344 4.537 4.732 4.928 5.125 5.323 5.522 5.721 5.921 6.12 6.32 6.52 6.72 6.92 7.12 7.32 7.521 7.721 7.921 8.121 8.321 8.521 8.721 8.921 9.12 9.319 9.516 9.713 9.907 10.099 10.287 10.47 10.646 10.812 10.967 11.105 11.222 11.313 11.374 11.399 11.4 11.397 11.384 11.362 11.332 11.293 11.245 11.191 11.129 11.061 10.986 10.906 10.82 10.729 10.633 10.533 10.429 10.321 10.21 10.096 9.979 9.86 9.739 9.616 9.491 9.364 9.237 9.108 8.979 8.849 8.719 8.588 8.458 8.327 8.197 8.067 7.937 7.808 7.68 7.552 7.425 7.299 7.174 7.051 6.928 6.806 6.686 6.567 6.449 6.333 6.218 6.105 5.993 5.882 5.773 5.665 5.559 5.454 5.351 5.25 5.15 5.052 4.955 4.859 4.765 4.673 4.582 4.493 4.405 4.319 4.234 4.151 4.069 3.989 3.91 3.832 3.756 3.681 3.608 3.536 3.465 3.396 3.327 3.261 3.195 3.131 3.067 3.005 2.945 2.885 2.827 2.769 2.713 2.658 2.604 2.551 2.499 2.448 2.398 2.349 2.301 2.254 2.208 2.163 2.118 2.075 2.032 1.991 1.95 1.91 1.871 1.832 1.794 1.758 1.721 1.686 1.651 1.617 1.584 1.551 1.519 1.488 1.457 1.427

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.244" PeakHeight="110.0" Num="3" Error="0.0">
-29.411 11.585 -2.477
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.244" EndFrequency="11.4" PeakHeight="386.018" Num="5" zHalfNm="283.501" Error="2.302">
-230.698 -41.652 22.174 -6.676 1.524
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="20.69" Depth="0.128"/>
<TopsideChapman PeakHeight="386.018" PeakDensity="1612407.0" PeakScaleHeight="74.513" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
