<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 19:20:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.15 (288) 19:20:00</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">
FF202628810151920009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.460" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.088" 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="10.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="9.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="521.275" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.428" 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="/" />
<URSI ID="92" Val="389.420" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="266.834" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.439" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="167.901" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.787" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.073" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="186.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.690" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="84">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 335.000 335.000 335.000 335.000 336.667 338.333 340.000 345.000 347.500 350.000 350.000 352.500 355.000 357.500 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 368.256 371.511 374.767 378.023 381.279 384.534 387.790 391.046 394.302 397.557 400.813 404.069 407.324 410.580 413.836 417.092 420.347 423.603 426.859 430.115 433.370 436.626 439.882 443.137 446.393 449.649 452.905 456.160 459.416 462.672 465.927 469.183 472.439 475.695 478.950 482.206 485.462 488.718 491.973 495.229 498.485 501.740 504.996 508.252 511.508 514.763 518.019 521.275 524.531 527.786 535.000 545.000 555.000 565.000 580.000 595.000 610.000 630.000 650.000 680.000 711.974
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 63 0 72 72 0 0 72 69 0 63 69 0 66 51 60 66 69 60 0 72 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
</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 -2.734375 -0.390625 -2.734375 1.953125 -0.390625 -1.953125 2.734375 -0.390625 -0.390625 1.953125 -1.171875 2.734375 -1.953125 -0.390625 1.953125 1.953125 -2.734375 1.171875 1.171875 0.390625 2.734375 -1.953125 -1.953125 -1.171875 -2.734375 2.734375 1.171875 1.953125 2.734375 1.171875 0.390625 1.171875 -1.171875 1.953125 -1.953125 -0.390625 -1.953125 -1.171875 -1.953125 1.171875 2.734375 -1.953125 1.171875 -0.390625 -0.390625 -2.734375 2.734375 -1.953125 -2.734375 -2.734375
</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" >
89.655 90.0 95.0 100.0 105.0 110.0 115.0 115.945 120.0 121.891 125.0 127.836 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 389.42 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.63 2.102 2.349 2.428 2.34 2.303 2.303 2.303 2.368 2.428 2.49 2.635 2.782 2.931 3.083 3.239 3.399 3.563 3.731 3.901 4.075 4.252 4.431 4.611 4.793 4.976 5.16 5.344 5.527 5.711 5.894 6.076 6.258 6.438 6.618 6.796 6.973 7.148 7.323 7.495 7.666 7.835 8.002 8.167 8.329 8.489 8.646 8.799 8.949 9.094 9.234 9.369 9.498 9.619 9.732 9.836 9.929 10.01 10.078 10.132 10.171 10.194 10.2 10.2 10.196 10.187 10.171 10.151 10.124 10.093 10.058 10.017 9.972 9.923 9.871 9.814 9.754 9.69 9.624 9.554 9.482 9.407 9.33 9.25 9.168 9.085 9.0 8.913 8.824 8.735 8.644 8.552 8.459 8.365 8.271 8.176 8.08 7.984 7.888 7.792 7.695 7.598 7.502 7.405 7.309 7.213 7.117 7.021 6.926 6.831 6.737 6.643 6.55 6.457 6.365 6.274 6.183 6.093 6.004 5.916 5.828 5.741 5.655 5.57 5.486 5.403 5.32 5.239 5.158 5.079 5.0 4.922 4.845 4.769 4.694 4.62 4.547 4.475 4.404 4.333 4.264 4.196 4.128 4.062 3.996 3.931 3.867 3.805 3.743 3.682 3.621 3.562 3.504 3.446 3.389 3.333 3.278 3.224 3.171 3.118 3.066 3.015 2.965 2.916 2.867 2.819 2.772 2.726 2.68 2.635 2.591 2.548 2.505 2.463 2.421 2.38 2.34 2.301 2.262 2.224 2.186 2.149 2.113 2.077 2.042 2.007

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.428" PeakHeight="110.0" Num="3" Error="0.0">
-29.633 11.896 -2.608
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.428" EndFrequency="10.2" PeakHeight="389.42" Num="5" zHalfNm="266.834" Error="2.51">
-249.376 -21.227 12.532 -4.619 1.106
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="17.836" Depth="0.125"/>
<TopsideChapman PeakHeight="389.42" PeakDensity="1290818.9" PeakScaleHeight="90.073" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
