<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 14:10:00.000"
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" >
2026.10.17 (290) 14:10:00</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">
FF202629010171410009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.568" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.784" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="11.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="510.000" 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="3.390" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.360" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="359.247" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="252.122" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.499" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="139.802" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.638" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.765" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="181.150" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.260" 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" >
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 11.55 11.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 335.000 337.215 339.430 341.646 343.861 346.076 348.291 350.506 352.722 354.937 357.152 359.367 361.582 363.797 366.013 368.228 370.443 372.658 374.873 377.089 379.304 381.519 383.734 385.949 388.165 390.380 392.595 394.810 397.025 399.241 401.456 403.671 405.886 408.101 410.316 412.532 414.747 416.962 419.177 421.392 423.608 425.823 428.038 430.253 432.468 434.684 436.899 439.114 441.329 443.544 445.759 447.975 450.190 452.405 454.620 456.835 459.051 461.266 463.481 465.696 467.911 470.127 472.342 474.557 476.772 478.987 481.203 483.418 485.633 487.848 490.063 492.278 494.494 496.709 498.924 501.139 503.354 505.570 507.785 510.000 520.000 526.683 534.835 545.000 558.029 575.330 599.417 635.258
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 63 63 63 63 66 66 66 69 69 69 66 69 72 69 69 63 66 69 69 66 66 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 0 0 54 54 54 51 48 54 51 48 48
</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 2.734375 -1.953125 -1.953125 1.953125 1.953125 0.390625 -2.734375 1.171875 -2.734375 -1.171875 -1.171875 -0.390625 -2.734375 -1.171875 -0.390625 2.734375 -0.390625 1.171875 -0.390625 -0.390625 -1.171875 -2.734375 -2.734375 0.390625 1.171875 -0.390625 -2.734375 0.390625 -0.390625 -2.734375 -1.953125 -0.390625 1.171875 1.953125 -1.171875 -1.953125 2.734375 0.390625 1.171875 2.734375 2.734375 1.171875 -2.734375 1.953125 1.953125 -2.734375 -1.171875 -0.390625 -0.390625 2.734375 2.734375 -1.953125 -2.734375 1.171875 -0.390625 1.953125 -1.953125 1.171875 -2.734375 0.390625 1.953125 -1.171875 1.953125 -2.734375 2.734375 -2.734375 2.734375 -2.734375 2.734375 -1.953125 1.953125 0.390625 -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" >
89.484 90.0 95.0 100.0 105.0 110.0 111.552 113.104 114.656 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 359.247 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.281 2.934 3.28 3.39 3.267 3.267 3.39 3.404 3.603 3.789 3.967 4.14 4.31 4.479 4.647 4.814 4.981 5.149 5.317 5.485 5.655 5.825 5.996 6.168 6.341 6.515 6.69 6.865 7.042 7.22 7.399 7.579 7.76 7.942 8.125 8.308 8.493 8.678 8.865 9.052 9.239 9.427 9.615 9.803 9.991 10.177 10.362 10.544 10.721 10.893 11.055 11.205 11.339 11.451 11.535 11.586 11.6 11.6 11.594 11.579 11.556 11.524 11.484 11.438 11.384 11.324 11.257 11.185 11.107 11.023 10.936 10.843 10.747 10.646 10.543 10.435 10.325 10.213 10.098 9.981 9.861 9.741 9.618 9.495 9.37 9.245 9.119 8.992 8.865 8.738 8.61 8.483 8.356 8.229 8.103 7.977 7.851 7.727 7.603 7.48 7.357 7.236 7.116 6.997 6.879 6.762 6.646 6.532 6.419 6.307 6.197 6.087 5.98 5.873 5.768 5.665 5.563 5.462 5.363 5.265 5.169 5.074 4.98 4.888 4.798 4.708 4.621 4.534 4.449 4.366 4.284 4.203 4.123 4.045 3.968 3.893 3.819 3.746 3.674 3.604 3.535 3.467 3.4 3.335 3.27 3.207 3.145 3.084 3.024 2.966 2.908 2.852 2.796 2.742 2.688 2.636 2.584 2.534 2.484 2.436 2.388 2.341 2.295 2.25 2.206 2.163 2.121 2.079 2.038 1.998 1.959 1.92 1.882 1.845 1.809 1.773 1.738 1.704 1.67 1.637 1.605 1.573 1.542 1.512 1.482 1.452

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.39" PeakHeight="110.0" Num="3" Error="0.0">
-30.5 13.151 -3.167
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.39" EndFrequency="11.6" PeakHeight="359.247" Num="5" zHalfNm="252.122" Error="1.924">
-209.843 -51.748 18.969 -2.721 0.752
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.656" Depth="0.123"/>
<TopsideChapman PeakHeight="359.247" PeakDensity="1669478.9" PeakScaleHeight="77.765" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
