<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 19:00:00.000"
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 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" >
2026.10.14 (287) 19:00:00</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">
FF202628710141900009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.479" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.016" 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="11.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="10.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="515.000" 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="2.595" 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="389.208" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="280.045" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.384" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="148.792" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.250" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.146" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="178.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.390" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="111">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 325.000 330.000 331.500 333.000 334.500 336.000 337.500 339.000 340.500 342.000 343.500 345.000 350.000 350.000 350.000 350.000 352.500 355.000 357.500 360.000 360.000 361.250 362.500 363.750 365.000 367.174 369.348 371.522 373.696 375.870 378.043 380.217 382.391 384.565 386.739 388.913 391.087 393.261 395.435 397.609 399.783 401.957 404.130 406.304 408.478 410.652 412.826 415.000 417.174 419.348 421.522 423.696 425.870 428.043 430.217 432.391 434.565 436.739 438.913 441.087 443.261 445.435 447.609 449.783 451.957 454.130 456.304 458.478 460.652 462.826 465.000 467.174 469.348 471.522 473.696 475.870 478.043 480.217 482.391 484.565 486.739 488.913 491.087 493.261 495.435 497.609 499.783 501.957 504.130 506.304 508.478 510.652 512.826 515.000 520.000 525.000 530.000 535.421 541.514 548.413 556.289 565.365 575.938 588.413 603.352 621.566 644.263 673.333
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 78 75 72 75 0 0 0 0 0 0 0 0 0 72 72 54 72 72 57 75 0 72 72 0 69 0 72 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 48 45 45 45 57 54 57 54 51 54 54 51 48 45 42
</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 -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 -1.953125 1.953125 -1.171875 2.734375 -1.171875 -2.734375 1.953125 1.171875 1.171875 -1.171875 -2.734375 -1.171875 2.734375 0.390625 -0.390625 -1.171875 -2.734375 1.171875 2.734375 1.953125 -1.171875 1.953125 -1.953125 0.390625 1.953125 -0.390625 -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 -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" >
89.62 90.0 95.0 100.0 105.0 110.0 115.0 115.111 120.0 120.223 125.0 125.334 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 389.208 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.232 1.743 2.247 2.511 2.595 2.476 2.471 2.471 2.471 2.587 2.595 2.754 2.921 3.087 3.252 3.416 3.581 3.747 3.913 4.079 4.247 4.415 4.585 4.755 4.926 5.098 5.272 5.446 5.621 5.797 5.974 6.153 6.332 6.512 6.693 6.876 7.059 7.243 7.428 7.614 7.801 7.989 8.177 8.366 8.555 8.745 8.935 9.124 9.313 9.501 9.687 9.872 10.052 10.229 10.4 10.563 10.718 10.86 10.988 11.098 11.187 11.252 11.29 11.3 11.3 11.294 11.281 11.259 11.23 11.194 11.15 11.101 11.045 10.984 10.917 10.844 10.768 10.686 10.6 10.511 10.418 10.321 10.221 10.119 10.014 9.906 9.797 9.686 9.572 9.458 9.342 9.225 9.107 8.988 8.869 8.749 8.629 8.509 8.389 8.268 8.148 8.028 7.909 7.789 7.671 7.553 7.436 7.319 7.203 7.088 6.974 6.861 6.749 6.638 6.529 6.42 6.312 6.206 6.101 5.997 5.894 5.793 5.693 5.594 5.496 5.4 5.305 5.212 5.119 5.028 4.939 4.85 4.763 4.678 4.593 4.51 4.428 4.348 4.269 4.191 4.114 4.038 3.964 3.891 3.819 3.749 3.679 3.611 3.544 3.478 3.413 3.35 3.287 3.226 3.165 3.106 3.048 2.99 2.934 2.879 2.825 2.771 2.719 2.668 2.617 2.568 2.519 2.471 2.424 2.378 2.333 2.289 2.245 2.203 2.161 2.119 2.079 2.039 2.0 1.962 1.925 1.888 1.852 1.817 1.782 1.748 1.714

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.595" PeakHeight="110.0" Num="3" Error="0.0">
-29.815 12.154 -2.719
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.595" EndFrequency="11.3" PeakHeight="389.208" Num="5" zHalfNm="280.045" Error="1.525">
-236.197 -43.877 18.977 -3.273 0.496
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="15.334" Depth="0.124"/>
<TopsideChapman PeakHeight="389.208" PeakDensity="1584243.1" PeakScaleHeight="80.146" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
