<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 15:00:00.000"
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="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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</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" >
2026.10.14 (287) 15:00:00</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">
FF202628710141500009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.448" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.904" 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="11.700" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="532.244" 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="3.400" 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="387.527" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="254.531" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.843" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="176.860" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="67.180" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="97.235" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="207.660" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="112">
<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 11.25 11.3 11.35 11.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 315.000 315.000 320.000 320.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 322.756 325.513 328.269 331.026 333.782 336.538 339.295 342.051 344.808 347.564 350.321 353.077 355.833 358.590 361.346 364.103 366.859 369.615 372.372 375.128 377.885 380.641 383.397 386.154 388.910 391.667 394.423 397.179 399.936 402.692 405.449 408.205 410.962 413.718 416.474 419.231 421.987 424.744 427.500 430.256 433.013 435.769 438.526 441.282 444.038 446.795 449.551 452.308 455.064 457.821 460.577 463.333 466.090 468.846 471.603 474.359 477.115 479.872 482.628 485.385 488.141 490.897 493.654 496.410 499.167 501.923 504.679 507.436 510.192 512.949 515.705 518.462 521.218 523.974 526.731 529.487 532.244 535.000 540.000 550.000 565.000 576.867 589.858 604.143 619.925 637.452 657.029 679.040 703.968 732.434
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 0 63 57 60 69 69 0 66 66 66 66 69 66 0 0 69 0 66 69 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 0 0 0 0 0 54 51 51 51 51 48 51 48 45 0 0 0 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 -1.953125 -0.390625 -1.171875 -0.390625 1.171875 0.390625 0.390625 -2.734375 -1.953125 2.734375 1.953125 -1.953125 0.390625 2.734375 -2.734375 -1.953125 1.953125 2.734375 -1.953125 -1.171875 -0.390625 1.171875 -1.953125 1.171875 -1.953125 2.734375 -0.390625 2.734375 2.734375 -2.734375 -0.390625 -1.171875 1.171875 2.734375 2.734375 1.171875 -1.953125 1.953125 -0.390625 1.953125 1.171875 0.390625 -2.734375 -2.734375 2.734375 -1.953125 1.171875 -2.734375 -1.953125 -0.390625 -2.734375 -2.734375 2.734375 1.171875 2.734375 1.953125 -2.734375 1.953125 2.734375 2.734375 1.171875 0.390625 -0.390625 -2.734375 2.734375 -2.734375 2.734375 1.953125 -2.734375 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 -1.171875 -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" >
89.482 90.0 95.0 100.0 105.0 110.0 111.511 113.021 114.532 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 387.527 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.287 2.942 3.289 3.4 3.277 3.277 3.4 3.416 3.583 3.742 3.897 4.05 4.202 4.355 4.51 4.666 4.823 4.983 5.146 5.31 5.476 5.644 5.814 5.986 6.159 6.333 6.507 6.682 6.858 7.033 7.209 7.384 7.558 7.732 7.905 8.077 8.248 8.418 8.587 8.754 8.92 9.084 9.246 9.407 9.565 9.721 9.874 10.025 10.172 10.315 10.453 10.587 10.715 10.836 10.948 11.052 11.145 11.225 11.292 11.344 11.38 11.398 11.4 11.399 11.394 11.382 11.365 11.343 11.316 11.285 11.248 11.207 11.162 11.113 11.06 11.003 10.943 10.88 10.813 10.743 10.671 10.596 10.518 10.439 10.357 10.273 10.187 10.099 10.01 9.919 9.827 9.734 9.64 9.544 9.448 9.351 9.253 9.155 9.056 8.957 8.857 8.758 8.658 8.558 8.458 8.357 8.257 8.158 8.058 7.959 7.86 7.761 7.663 7.565 7.468 7.371 7.275 7.179 7.084 6.99 6.896 6.803 6.711 6.619 6.528 6.438 6.349 6.261 6.173 6.087 6.001 5.916 5.832 5.748 5.666 5.585 5.504 5.424 5.346 5.268 5.191 5.115 5.04 4.965 4.892 4.82 4.748 4.677 4.608 4.539 4.471 4.404 4.338 4.272 4.208 4.144 4.081 4.02 3.958 3.898 3.839 3.78 3.722 3.665 3.609 3.554 3.499 3.445 3.392 3.34 3.289 3.238 3.188 3.138 3.09 3.042 2.995 2.948 2.902 2.857 2.813 2.769 2.726 2.683 2.641 2.6

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.4" PeakHeight="110.0" Num="3" Error="0.0">
-30.507 13.161 -3.172
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.4" EndFrequency="11.4" PeakHeight="387.527" Num="5" zHalfNm="254.531" Error="3.869">
-249.963 -34.514 14.071 -4.151 1.562
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.532" Depth="0.123"/>
<TopsideChapman PeakHeight="387.527" PeakDensity="1612407.0" PeakScaleHeight="97.235" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
