<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 20:50:00.000"
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" >
2026.10.13 (286) 20:50:00</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">
FF202628610132050009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.400" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.598" 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="11.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="577.407" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.030" 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="/" />
<URSI ID="92" Val="427.408" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="332.235" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.245" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="137.795" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.362" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="69.938" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="143.980" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.740" 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" >
5.8 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 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 330.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 370.000 372.593 375.185 377.778 380.370 382.963 385.556 388.148 390.741 393.333 395.926 398.519 401.111 403.704 406.296 408.889 411.481 414.074 416.667 419.259 421.852 424.444 427.037 429.630 432.222 434.815 437.407 440.000 442.593 445.185 447.778 450.370 452.963 455.556 458.148 460.741 463.333 465.926 468.519 471.111 473.704 476.296 478.889 481.481 484.074 486.667 489.259 491.852 494.444 497.037 499.630 502.222 504.815 507.407 510.000 512.593 515.185 517.778 520.370 522.963 525.556 528.148 530.741 533.333 535.926 538.519 541.111 543.704 546.296 548.889 551.481 554.074 556.667 559.259 561.852 564.444 567.037 569.630 572.222 574.815 577.407 580.000 590.000 604.148 622.949 649.148 688.183
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 0 69 0 0 78 72 75 75 66 69 75 75 72 69 75 78 75 72 75 75 75 72 66 75 75 60 78 0 0 66 0 0 0 0 51 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 51 51 48 51 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 2.734375 1.171875 -1.171875 0.390625 -1.171875 -1.171875 -1.171875 -1.171875 0.390625 -1.171875 -2.734375 -2.734375 1.171875 1.171875 -2.734375 0.390625 -1.171875 1.953125 -0.390625 0.390625 -2.734375 -1.953125 2.734375 -2.734375 1.171875 1.953125 2.734375 -1.953125 1.171875 1.953125 1.953125 0.390625 -1.953125 -1.953125 -2.734375 1.171875 -2.734375 2.734375 2.734375 2.734375 0.390625 0.390625 1.171875 -2.734375 -2.734375 -2.734375 -2.734375 2.734375 1.171875 2.734375 -2.734375 -0.390625 -1.171875 2.734375 -2.734375 1.171875 2.734375 -0.390625 -0.390625 -2.734375 2.734375 0.390625 0.390625 2.734375 2.734375 0.390625 -1.171875 -0.390625 -0.390625 -2.734375 0.390625 -0.390625 1.953125 -1.953125 -2.734375 -0.390625 0.390625 1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.241 95.0 100.0 105.0 110.0 115.0 120.0 125.0 126.335 130.0 135.0 140.0 142.669 145.0 150.0 155.0 159.004 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 427.408 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.686 0.892 0.997 1.03 1.013 0.959 0.863 0.829 0.829 0.829 0.829 0.829 0.858 0.919 0.981 1.03 1.054 1.169 1.28 1.393 1.51 1.633 1.764 1.903 2.053 2.213 2.384 2.567 2.76 2.964 3.178 3.4 3.628 3.863 4.101 4.343 4.587 4.833 5.079 5.326 5.574 5.821 6.068 6.314 6.56 6.806 7.051 7.295 7.539 7.782 8.024 8.265 8.504 8.742 8.979 9.212 9.443 9.67 9.893 10.11 10.32 10.521 10.711 10.888 11.048 11.19 11.308 11.401 11.464 11.496 11.5 11.498 11.487 11.465 11.433 11.391 11.34 11.28 11.213 11.138 11.055 10.967 10.872 10.771 10.666 10.555 10.441 10.322 10.2 10.075 9.947 9.816 9.684 9.549 9.413 9.276 9.137 8.998 8.858 8.718 8.578 8.437 8.297 8.157 8.018 7.879 7.741 7.604 7.468 7.333 7.199 7.066 6.935 6.805 6.676 6.549 6.424 6.3 6.177 6.057 5.938 5.821 5.705 5.591 5.479 5.369 5.26 5.153 5.048 4.945 4.844 4.744 4.646 4.549 4.455 4.362 4.271 4.181 4.094 4.007 3.923 3.84 3.759 3.679 3.601 3.524 3.449 3.375 3.303 3.232 3.163 3.095 3.028 2.963 2.899 2.837 2.775 2.715 2.657 2.599 2.543 2.488 2.434 2.381 2.329 2.278 2.229 2.18 2.132 2.086 2.04 1.996 1.952 1.909 1.868 1.827 1.787 1.748 1.709 1.672 1.635 1.599 1.564 1.53 1.496 1.464

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.03" PeakHeight="110.0" Num="3" Error="0.0">
-26.635 8.139 -1.263
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.03" EndFrequency="11.5" PeakHeight="427.408" Num="5" zHalfNm="332.235" Error="4.973">
-257.283 -22.147 16.945 -9.355 3.436
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="49.004" Depth="0.201"/>
<TopsideChapman PeakHeight="427.408" PeakDensity="1640818.9" PeakScaleHeight="69.938" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
