<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 20:30:00.000"
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) 20:30:00</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">
FF202628810152030009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.447" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.329" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.750" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="526.218" 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="1.460" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="401.865" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="290.829" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.371" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="157.292" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.366" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.315" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="157.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.060" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="85">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 316.818 318.636 320.455 322.273 324.091 325.909 327.727 329.545 331.364 333.182 335.000 335.000 335.000 335.000 337.500 340.000 341.667 343.333 345.000 348.553 352.107 355.660 359.213 362.766 366.320 369.873 373.426 376.980 380.533 384.086 387.639 391.193 394.746 398.299 401.853 405.406 408.959 412.513 416.066 419.619 423.172 426.726 430.279 433.832 437.386 440.939 444.492 448.045 451.599 455.152 458.705 462.259 465.812 469.365 472.918 476.472 480.025 483.578 487.132 490.685 494.238 497.791 501.345 504.898 508.451 512.005 515.558 519.111 522.665 526.218 529.771 533.324 540.000 550.000 560.000 575.000 585.000 600.000 615.000 630.000 650.000 670.000 691.449
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 0 0 0 0 0 0 0 0 0 57 78 75 75 0 0 75 0 0 75 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
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.953125 -0.390625 -0.390625 1.171875 -0.390625 -1.171875 -1.171875 -0.390625 0.390625 2.734375 2.734375 -2.734375 -0.390625 1.171875 2.734375 0.390625 -1.171875 -0.390625 2.734375 1.171875 2.734375 0.390625 -2.734375 2.734375 -1.171875 -1.171875 0.390625 -2.734375 -0.390625 -0.390625 -2.734375 1.953125 1.953125 1.171875 -0.390625 -2.734375 1.953125 -1.171875 0.390625 -2.734375 2.734375 -2.734375 1.171875 1.171875 0.390625 1.953125 2.734375 2.734375 -1.953125 2.734375 1.953125 -1.171875 0.390625 2.734375 1.953125 0.390625 -1.171875 2.734375 2.734375 -2.734375 -0.390625 -1.171875 -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" >
89.954 90.0 95.0 100.0 105.0 110.0 115.0 120.0 121.561 125.0 130.0 133.122 135.0 140.0 144.683 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 401.865 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.204 0.976 1.265 1.413 1.46 1.433 1.35 1.312 1.312 1.312 1.312 1.336 1.4 1.46 1.469 1.599 1.724 1.85 1.978 2.111 2.25 2.397 2.554 2.72 2.896 3.084 3.283 3.492 3.712 3.939 4.174 4.415 4.659 4.906 5.153 5.4 5.645 5.889 6.129 6.367 6.602 6.832 7.059 7.282 7.501 7.714 7.924 8.128 8.327 8.52 8.708 8.888 9.062 9.228 9.386 9.535 9.674 9.803 9.92 10.025 10.116 10.194 10.256 10.303 10.334 10.349 10.35 10.349 10.34 10.325 10.303 10.275 10.24 10.2 10.154 10.103 10.047 9.987 9.922 9.852 9.779 9.703 9.622 9.539 9.453 9.364 9.273 9.179 9.084 8.986 8.887 8.786 8.685 8.581 8.477 8.372 8.267 8.161 8.054 7.947 7.84 7.732 7.625 7.518 7.411 7.304 7.197 7.091 6.986 6.881 6.776 6.673 6.57 6.467 6.366 6.265 6.166 6.067 5.969 5.872 5.776 5.681 5.588 5.495 5.403 5.313 5.223 5.135 5.048 4.962 4.877 4.793 4.711 4.629 4.549 4.47 4.392 4.315 4.239 4.165 4.091 4.019 3.948 3.878 3.808 3.741 3.674 3.608 3.543 3.479 3.417 3.355 3.294 3.235 3.176 3.119 3.062 3.006 2.951 2.898 2.845 2.793 2.742 2.691 2.642 2.594 2.546 2.499 2.453 2.408 2.364 2.32 2.277 2.235 2.194 2.153 2.113 2.074 2.036 1.998 1.961 1.925 1.889 1.854 1.819 1.785 1.752

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.46" PeakHeight="110.0" Num="3" Error="0.0">
-28.028 9.767 -1.785
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.46" EndFrequency="10.35" PeakHeight="401.865" Num="5" zHalfNm="290.829" Error="4.906">
-257.816 -0.842 3.434 -4.415 2.457
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="34.683" Depth="0.148"/>
<TopsideChapman PeakHeight="401.865" PeakDensity="1329063.2" PeakScaleHeight="82.315" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
