<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 14:50:00.000"
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) 14:50:00</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">
FF202628910161450009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.346" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.270" 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="11.500" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="596.923" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.401" 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="/" />
<Modeled Name="foF1p" Val="4.365" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="396.411" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.286" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.770" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="165.568" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="62.110" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="91.545" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="216.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="108">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 352.500 355.000 355.000 360.000 360.000 360.000 363.077 366.154 369.231 372.308 375.385 378.462 381.538 384.615 387.692 390.769 393.846 396.923 400.000 403.077 406.154 409.231 412.308 415.385 418.462 421.538 424.615 427.692 430.769 433.846 436.923 440.000 443.077 446.154 449.231 452.308 455.385 458.462 461.538 464.615 467.692 470.769 473.846 476.923 480.000 483.077 486.154 489.231 492.308 495.385 498.462 501.538 504.615 507.692 510.769 513.846 516.923 520.000 523.077 526.154 529.231 532.308 535.385 538.462 541.538 544.615 547.692 550.769 553.846 556.923 560.000 563.077 566.154 569.231 572.308 575.385 578.462 581.538 584.615 587.692 590.769 593.846 596.923 600.000 605.000 622.500 640.000 665.000 715.555
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 69 66 63 69 72 72 72 69 66 69 63 66 69 69 72 72 72 0 66 54 57 0 54 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 48 0 45 45 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 -1.171875 0.390625 2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 -0.390625 -1.171875 2.734375 -0.390625 1.953125 -1.171875 -0.390625 -2.734375 -2.734375 0.390625 -1.953125 -1.171875 2.734375 -0.390625 1.171875 -0.390625 -2.734375 2.734375 2.734375 2.734375 -1.953125 1.953125 -1.953125 2.734375 0.390625 -1.953125 -1.171875 -0.390625 1.171875 -1.171875 -0.390625 2.734375 -2.734375 2.734375 0.390625 0.390625 -0.390625 1.953125 -2.734375 1.171875 2.734375 -1.953125 -0.390625 -2.734375 -1.953125 -1.953125 1.171875 -1.953125 2.734375 -2.734375 -2.734375 -1.171875 -0.390625 -1.171875 -1.171875 2.734375 0.390625 1.953125 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875
</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" >
89.481 90.0 95.0 100.0 105.0 110.0 111.507 113.013 114.52 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 396.411 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.288 2.943 3.29 3.401 3.278 3.278 3.401 3.418 3.585 3.739 3.887 4.031 4.174 4.316 4.458 4.601 4.744 4.888 5.033 5.179 5.326 5.474 5.622 5.771 5.921 6.07 6.22 6.37 6.52 6.67 6.819 6.968 7.117 7.265 7.413 7.56 7.707 7.853 7.999 8.144 8.289 8.434 8.578 8.722 8.866 9.009 9.152 9.295 9.438 9.58 9.723 9.864 10.006 10.146 10.285 10.423 10.557 10.688 10.812 10.927 11.03 11.113 11.172 11.199 11.2 11.198 11.191 11.177 11.157 11.131 11.1 11.064 11.023 10.977 10.927 10.872 10.813 10.75 10.684 10.614 10.541 10.465 10.386 10.304 10.22 10.133 10.044 9.954 9.861 9.767 9.671 9.574 9.476 9.376 9.276 9.174 9.072 8.97 8.866 8.763 8.659 8.554 8.45 8.346 8.241 8.137 8.033 7.929 7.825 7.722 7.619 7.516 7.414 7.313 7.212 7.112 7.012 6.913 6.815 6.718 6.621 6.526 6.431 6.337 6.243 6.151 6.06 5.97 5.88 5.792 5.704 5.618 5.532 5.447 5.364 5.281 5.2 5.119 5.04 4.961 4.883 4.807 4.731 4.657 4.583 4.511 4.439 4.368 4.299 4.23 4.162 4.096 4.03 3.965 3.901 3.838 3.776 3.715 3.654 3.595 3.537 3.479 3.422 3.366 3.311 3.257 3.204 3.151 3.099 3.048 2.998 2.949 2.9 2.852 2.805 2.759 2.713 2.668 2.624 2.58 2.538 2.495 2.454 2.413 2.373 2.334

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.401" PeakHeight="110.0" Num="3" Error="0.0">
-30.508 13.162 -3.173
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.401" EndFrequency="11.2" PeakHeight="396.411" Num="5" zHalfNm="267.286" Error="2.687">
-240.118 -64.256 28.093 -7.908 2.298
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.52" Depth="0.123"/>
<TopsideChapman PeakHeight="396.411" PeakDensity="1556327.5" PeakScaleHeight="91.545" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
