<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 18:00:00.000"
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="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" >
2026.10.13 (286) 18:00:00</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">
FF202628610131800009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.395" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.586" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="10.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="581.918" 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="2.963" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.155" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="389.927" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="269.168" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.144" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="159.524" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.349" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="86.225" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="196.660" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.340" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="107">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.8 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 315.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 352.500 355.000 357.500 360.000 363.082 366.164 369.247 372.329 375.411 378.493 381.575 384.658 387.740 390.822 393.904 396.986 400.068 403.151 406.233 409.315 412.397 415.479 418.562 421.644 424.726 427.808 430.890 433.973 437.055 440.137 443.219 446.301 449.384 452.466 455.548 458.630 461.712 464.795 467.877 470.959 474.041 477.123 480.205 483.288 486.370 489.452 492.534 495.616 498.699 501.781 504.863 507.945 511.027 514.110 517.192 520.274 523.356 526.438 529.521 532.603 535.685 538.767 541.849 544.932 548.014 551.096 554.178 557.260 560.342 563.425 566.507 569.589 572.671 575.753 578.836 581.918 585.000 598.832 620.000 656.443 734.031
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 63 54 0 0 69 72 66 66 69 69 66 69 69 66 69 72 69 66 69 69 69 69 0 69 69 0 72 0 69 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 57 54 51 42 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 -0.390625 -0.390625 -2.734375 1.953125 -1.953125 -2.734375 -0.390625 -2.734375 1.953125 0.390625 2.734375 -0.390625 1.171875 1.171875 1.953125 1.953125 -1.171875 -0.390625 2.734375 -0.390625 0.390625 -1.953125 -1.953125 -2.734375 -0.390625 2.734375 0.390625 0.390625 -1.171875 -2.734375 0.390625 1.953125 1.953125 -1.171875 -1.171875 0.390625 -1.171875 -2.734375 -2.734375 0.390625 -0.390625 -1.171875 2.734375 -1.171875 1.171875 1.953125 -0.390625 2.734375 0.390625 1.171875 -0.390625 -2.734375 -2.734375 1.171875 0.390625 -0.390625 2.734375 -1.953125 -2.734375 -1.953125 -1.171875 -1.171875 0.390625 -1.953125 -1.171875 2.734375 -2.734375 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 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" >
89.551 90.0 95.0 100.0 105.0 110.0 113.382 115.0 116.765 120.0 120.147 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 389.927 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.992 2.565 2.867 2.963 2.841 2.841 2.841 2.958 2.963 3.135 3.298 3.454 3.607 3.76 3.913 4.067 4.223 4.381 4.542 4.704 4.868 5.034 5.201 5.369 5.538 5.708 5.878 6.047 6.217 6.386 6.555 6.723 6.89 7.057 7.222 7.387 7.551 7.714 7.876 8.037 8.198 8.357 8.516 8.675 8.833 8.99 9.146 9.302 9.457 9.611 9.764 9.916 10.065 10.213 10.357 10.497 10.63 10.754 10.867 10.963 11.037 11.084 11.1 11.1 11.096 11.086 11.068 11.044 11.014 10.978 10.936 10.889 10.837 10.78 10.718 10.652 10.582 10.508 10.43 10.349 10.265 10.178 10.088 9.996 9.901 9.805 9.706 9.606 9.504 9.401 9.296 9.19 9.084 8.976 8.868 8.759 8.65 8.54 8.431 8.321 8.211 8.101 7.991 7.882 7.773 7.664 7.556 7.448 7.34 7.234 7.128 7.022 6.918 6.814 6.711 6.609 6.508 6.408 6.309 6.21 6.113 6.017 5.922 5.828 5.735 5.643 5.552 5.462 5.373 5.286 5.199 5.114 5.03 4.946 4.864 4.784 4.704 4.625 4.548 4.471 4.396 4.322 4.249 4.176 4.106 4.036 3.967 3.899 3.832 3.766 3.702 3.638 3.575 3.514 3.453 3.393 3.334 3.276 3.219 3.163 3.108 3.054 3.001 2.948 2.897 2.846 2.796 2.747 2.699 2.651 2.605 2.559 2.514 2.47 2.426 2.383 2.341 2.3 2.259 2.219 2.18 2.141 2.103 2.066 2.03 1.993

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.963" PeakHeight="110.0" Num="3" Error="0.0">
-30.164 12.656 -2.941
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.963" EndFrequency="11.1" PeakHeight="389.927" Num="5" zHalfNm="269.168" Error="3.596">
-237.328 -52.258 25.563 -8.257 2.5
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.147" Depth="0.122"/>
<TopsideChapman PeakHeight="389.927" PeakDensity="1528660.0" PeakScaleHeight="86.225" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
