<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 19:50:00.000"
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="12.0">
<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" >
2026.10.19 (292) 19:50:00</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">
FF202629210191950009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.450" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.482" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="9.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="520.823" 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="2.103" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="394.649" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="281.155" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.472" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="156.220" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.518" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.074" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="173.900" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="117">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 280.000 285.000 285.000 287.500 290.000 292.500 295.000 295.000 296.765 298.529 300.294 302.059 303.824 305.588 307.353 309.118 310.882 312.647 314.412 316.176 317.941 319.706 321.471 323.235 325.000 325.000 327.692 330.385 333.077 335.769 338.462 341.154 343.846 346.538 349.231 351.923 354.615 357.308 360.000 360.000 360.000 360.000 360.000 370.000 371.250 372.500 373.750 375.000 375.000 380.000 385.000 390.000 385.000 385.000 390.000 395.000 395.000 397.500 400.000 402.810 405.620 408.429 411.239 414.049 416.859 419.669 422.479 425.288 428.098 430.908 433.718 436.528 439.338 442.147 444.957 447.767 450.577 453.387 456.197 459.006 461.816 464.626 467.436 470.246 473.055 475.865 478.675 481.485 484.295 487.105 489.914 492.724 495.534 498.344 501.154 503.964 506.773 509.583 512.393 515.203 518.013 520.823 525.774 530.000 535.000 545.000 550.000 560.000 565.000 575.000 590.000 600.000 615.000 635.000 655.000 676.557
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 63 60 0 0 0 48 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 72 69 0 0 0 63 0 0 0 0 0 0 0 0 48 63 0 66 0 63 0 0 48 72 0 0 0 57 72 0 0 72 69 0 69 69 0 0 0 0 0 0 51 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 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 2.734375 -2.734375 2.734375 1.171875 -2.734375 -2.734375 -1.171875 -0.390625 -0.390625 -2.734375 -2.734375 2.734375 -2.734375 -2.734375 1.953125 -1.171875 -1.171875 -1.953125 1.171875 -1.171875 2.734375 -1.171875 -1.171875 0.390625 2.734375 -1.171875 -1.953125 -1.953125 2.734375 0.390625 -2.734375 -1.171875 2.734375 1.171875 -0.390625 -1.171875 1.953125 2.734375 0.390625 1.953125 -1.953125 -1.953125 -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" >
89.733 90.0 95.0 100.0 105.0 110.0 115.0 117.648 120.0 125.0 125.295 130.0 132.943 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 394.649 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.223 1.41 1.821 2.035 2.103 2.048 1.973 1.973 1.973 1.973 2.053 2.103 2.166 2.31 2.449 2.588 2.729 2.874 3.024 3.179 3.341 3.508 3.682 3.863 4.048 4.238 4.432 4.628 4.826 5.025 5.224 5.422 5.619 5.815 6.009 6.201 6.392 6.58 6.766 6.95 7.132 7.313 7.491 7.668 7.842 8.015 8.187 8.356 8.524 8.689 8.852 9.013 9.17 9.325 9.475 9.62 9.759 9.89 10.012 10.122 10.217 10.296 10.354 10.389 10.4 10.4 10.396 10.384 10.366 10.341 10.309 10.272 10.229 10.18 10.126 10.068 10.004 9.937 9.865 9.79 9.711 9.628 9.543 9.455 9.364 9.271 9.175 9.078 8.979 8.878 8.776 8.673 8.568 8.463 8.357 8.25 8.143 8.035 7.927 7.819 7.711 7.603 7.495 7.387 7.279 7.172 7.066 6.96 6.854 6.749 6.645 6.542 6.439 6.337 6.237 6.137 6.038 5.94 5.843 5.747 5.652 5.558 5.465 5.374 5.283 5.194 5.105 5.018 4.932 4.847 4.764 4.681 4.6 4.52 4.441 4.363 4.286 4.211 4.136 4.063 3.991 3.92 3.85 3.781 3.713 3.646 3.581 3.516 3.453 3.39 3.329 3.269 3.209 3.151 3.093 3.037 2.982 2.927 2.873 2.821 2.769 2.718 2.668 2.619 2.571 2.523 2.477 2.431 2.386 2.342 2.299 2.256 2.214 2.173 2.133 2.093 2.054 2.016 1.979 1.942 1.906 1.87 1.835 1.801 1.768 1.735 1.702

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.103" PeakHeight="110.0" Num="3" Error="0.0">
-29.219 11.322 -2.37
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.103" EndFrequency="10.4" PeakHeight="394.649" Num="5" zHalfNm="281.155" Error="3.046">
-243.529 -31.051 18.885 -9.031 3.02
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="22.943" Depth="0.13"/>
<TopsideChapman PeakHeight="394.649" PeakDensity="1341935.5" PeakScaleHeight="82.074" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
