<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 20:00:00.000"
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 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" >
2026.10.14 (287) 20:00:00</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">
FF202628710142000009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.374" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.468" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="10.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="556.963" 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="1.983" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="416.237" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="300.734" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.464" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="161.015" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.032" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.076" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="179.180" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.570" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="110">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.7 5.75 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 322.000 324.000 326.000 328.000 330.000 332.000 334.000 336.000 338.000 340.000 340.000 340.000 343.333 346.667 350.000 350.000 350.000 355.000 360.000 360.000 361.250 362.500 363.750 365.000 367.500 370.000 375.000 377.635 380.269 382.904 385.538 388.173 390.808 393.442 396.077 398.711 401.346 403.981 406.615 409.250 411.884 414.519 417.154 419.788 422.423 425.057 427.692 430.326 432.961 435.596 438.230 440.865 443.499 446.134 448.769 451.403 454.038 456.672 459.307 461.942 464.576 467.211 469.845 472.480 475.115 477.749 480.384 483.018 485.653 488.288 490.922 493.557 496.191 498.826 501.461 504.095 506.730 509.364 511.999 514.634 517.268 519.903 522.537 525.172 527.806 530.441 533.076 535.710 538.345 540.979 543.614 546.249 549.491 553.047 556.963 561.298 566.122 570.000 580.000 585.000 595.000 600.000 610.000 625.000 640.000 660.000 685.000 714.002
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 75 0 0 0 0 78 81 0 0 81 78 0 78 0 78 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 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 -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 -1.171875 -0.390625 1.171875 2.734375 -2.734375 -2.734375 -0.390625 -1.171875 2.734375 -0.390625 1.171875 -1.171875 2.734375 -0.390625 2.734375 -0.390625 1.171875 2.734375 1.953125 1.171875 0.390625 -1.953125 -1.953125 -0.390625 -1.953125 2.734375 -2.734375 2.734375 2.734375 -1.953125 1.953125 1.953125 -0.390625 0.390625 -1.171875 -2.734375 -2.734375 1.953125 2.734375 -0.390625 2.734375 -0.390625 1.953125 0.390625 -1.171875 -1.171875 -2.734375 -1.953125 -2.734375 1.953125 1.953125 -0.390625 -1.953125 0.390625 2.734375 2.734375 -1.171875 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" >
89.765 90.0 95.0 100.0 105.0 110.0 115.0 118.306 120.0 125.0 126.611 130.0 134.917 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 416.237 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22 1.329 1.717 1.919 1.983 1.936 1.85 1.85 1.85 1.85 1.904 1.983 1.985 2.129 2.269 2.409 2.55 2.696 2.845 2.999 3.159 3.323 3.492 3.667 3.846 4.028 4.215 4.404 4.595 4.788 4.982 5.177 5.372 5.567 5.762 5.956 6.15 6.343 6.536 6.727 6.918 7.107 7.296 7.484 7.671 7.857 8.042 8.226 8.409 8.591 8.772 8.951 9.129 9.305 9.479 9.651 9.819 9.984 10.145 10.3 10.448 10.588 10.718 10.835 10.938 11.023 11.088 11.131 11.149 11.15 11.148 11.138 11.122 11.098 11.068 11.032 10.989 10.941 10.888 10.829 10.765 10.697 10.625 10.548 10.468 10.384 10.297 10.207 10.114 10.018 9.92 9.82 9.718 9.614 9.508 9.401 9.293 9.184 9.074 8.962 8.851 8.738 8.626 8.513 8.4 8.286 8.173 8.06 7.947 7.835 7.723 7.611 7.5 7.389 7.279 7.17 7.061 6.953 6.847 6.741 6.635 6.531 6.428 6.326 6.225 6.125 6.026 5.928 5.831 5.736 5.641 5.548 5.456 5.365 5.275 5.187 5.099 5.013 4.928 4.844 4.761 4.68 4.599 4.52 4.442 4.365 4.29 4.215 4.142 4.069 3.998 3.928 3.859 3.791 3.725 3.659 3.594 3.531 3.468 3.406 3.346 3.286 3.228 3.17 3.114 3.058 3.003 2.949 2.896 2.844 2.793 2.743 2.694 2.645 2.597 2.55 2.504 2.459 2.415 2.371 2.328 2.286 2.244 2.204 2.164 2.124 2.086

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.983" PeakHeight="110.0" Num="3" Error="0.0">
-29.043 11.082 -2.274
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.983" EndFrequency="11.15" PeakHeight="416.237" Num="5" zHalfNm="300.734" Error="3.569">
-262.171 -34.014 20.948 -8.543 2.46
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="24.917" Depth="0.133"/>
<TopsideChapman PeakHeight="416.237" PeakDensity="1542462.8" PeakScaleHeight="84.076" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
