<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 14:40:00.000"
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" >
2026.10.19 (292) 14:40:00</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">
FF202629210191440009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.615" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.548" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.700" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="481.856" 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="3.399" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.365" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="353.098" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="249.495" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.699" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="136.777" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.043" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.031" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="172.700" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.370" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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" >
320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 322.500 325.000 325.000 325.000 325.000 330.000 327.500 325.000 330.000 330.000 330.000 330.000 330.000 332.065 334.130 336.196 338.261 340.326 342.391 344.457 346.522 348.587 350.652 352.718 354.783 356.848 358.913 360.979 363.044 365.109 367.174 369.240 371.305 373.370 375.435 377.501 379.566 381.631 383.696 385.762 387.827 389.892 391.957 394.023 396.088 398.153 400.218 402.284 404.349 406.414 408.479 410.544 412.610 414.675 416.740 418.805 420.871 422.936 425.001 427.066 429.132 431.197 433.262 435.327 437.393 439.458 441.523 443.588 445.654 447.719 449.784 451.849 453.915 455.980 458.045 460.110 462.176 464.241 466.306 468.843 471.625 474.689 478.081 481.856 486.082 490.848 495.000 505.000 510.000 520.000 530.000 540.000 555.000 575.000 600.000 630.406
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 60 0 0 0 60 0 66 66 69 69 69 69 69 69 66 63 57 0 57 63 63 60 0 0 60 63 66 66 0 66 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 2.734375 1.171875 0.390625 1.953125 -1.953125 1.953125 -0.390625 -0.390625 2.734375 0.390625 1.953125 0.390625 -2.734375 0.390625 -0.390625 1.171875 -2.734375 -0.390625 1.171875 -0.390625 -2.734375 -0.390625 -1.171875 2.734375 -2.734375 -1.953125 2.734375 1.953125 -2.734375 -1.171875 2.734375 1.171875 -1.953125 -2.734375 1.171875 1.171875 -1.171875 -2.734375 -2.734375 -1.171875 1.953125 -1.953125 2.734375 1.953125 -1.953125 -1.171875 0.390625 0.390625 1.953125 2.734375 -2.734375 2.734375 1.171875 2.734375 -0.390625 1.171875 0.390625 -2.734375 -1.171875 -2.734375 2.734375 2.734375 -2.734375 -0.390625 -1.953125 -2.734375 -2.734375 -0.390625 1.171875 0.390625 -2.734375 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" >
89.482 90.0 95.0 100.0 105.0 110.0 111.515 113.031 114.546 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 353.098 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.287 2.941 3.288 3.399 3.276 3.276 3.399 3.418 3.611 3.785 3.949 4.108 4.263 4.416 4.568 4.721 4.874 5.028 5.184 5.341 5.501 5.662 5.826 5.993 6.163 6.335 6.51 6.688 6.868 7.052 7.238 7.428 7.619 7.814 8.01 8.209 8.409 8.611 8.814 9.018 9.221 9.424 9.625 9.823 10.018 10.208 10.39 10.563 10.725 10.872 11.003 11.113 11.2 11.261 11.294 11.3 11.299 11.291 11.275 11.249 11.216 11.175 11.127 11.073 11.011 10.944 10.871 10.792 10.709 10.621 10.529 10.432 10.332 10.229 10.123 10.013 9.901 9.787 9.671 9.553 9.434 9.313 9.191 9.068 8.944 8.82 8.695 8.57 8.445 8.32 8.195 8.07 7.945 7.821 7.698 7.575 7.453 7.331 7.211 7.091 6.973 6.855 6.739 6.623 6.509 6.396 6.285 6.174 6.065 5.958 5.851 5.746 5.643 5.541 5.44 5.341 5.243 5.146 5.051 4.958 4.866 4.775 4.686 4.598 4.511 4.426 4.342 4.26 4.179 4.1 4.021 3.944 3.869 3.795 3.722 3.65 3.579 3.51 3.442 3.375 3.31 3.246 3.182 3.12 3.059 3.0 2.941 2.883 2.827 2.771 2.717 2.664 2.611 2.56 2.509 2.46 2.411 2.364 2.317 2.271 2.226 2.182 2.139 2.097 2.055 2.014 1.974 1.935 1.897 1.859 1.822 1.786 1.75 1.715 1.681 1.648 1.615 1.583 1.551 1.52 1.49 1.46 1.431 1.402 1.374 1.347

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.399" PeakHeight="110.0" Num="3" Error="0.0">
-30.506 13.16 -3.172
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.399" EndFrequency="11.3" PeakHeight="353.098" Num="5" zHalfNm="249.495" Error="3.726">
-205.608 -44.262 10.089 0.605 0.624
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.546" Depth="0.123"/>
<TopsideChapman PeakHeight="353.098" PeakDensity="1584243.1" PeakScaleHeight="77.031" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
