<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 21:10:00.000"
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="14.0">
<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: 50% PACIFIC flags: F2o cusp not found, F2 cusps do not match</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" >
2026.10.22 (295) 21:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629510222110009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.695" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.553" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="0.400" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="12.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.637" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="380.352" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="324.348" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.072" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="83.222" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="34.574" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="41.305" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="88.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="161">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.45 4.5 4.55 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 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 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4 12.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 290.000 295.000 295.000 296.250 297.500 298.750 300.000 302.500 305.000 306.250 307.500 308.750 310.000 305.000 306.000 307.000 308.000 309.000 310.000 311.000 312.000 313.000 314.000 315.000 316.000 317.000 318.000 319.000 320.000 321.000 322.000 323.000 324.000 325.000 325.000 327.000 329.000 331.000 333.000 335.000 335.000 335.000 335.000 336.667 338.333 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 351.667 353.333 355.000 357.500 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 367.500 370.000 370.000 371.190 372.381 373.571 374.762 375.952 377.143 378.333 379.524 380.714 381.905 383.095 384.286 385.476 386.667 387.857 389.048 390.238 391.429 392.619 393.810 395.000 396.190 397.381 398.571 399.762 400.952 402.143 403.333 404.524 405.714 406.905 408.095 409.286 410.476 411.667 412.857 414.048 415.238 416.429 417.619 418.810 420.000 421.190 422.381 423.571 424.762 425.952 427.143 428.333 429.524 430.714 431.905 433.095 434.286 435.476 436.667 437.857 439.048 440.238 441.429 442.619 443.810 445.000 445.000 450.000 450.000 450.000 452.727 455.455 458.182 460.909 463.636 466.364 469.091 471.818 474.545 477.273 480.000 480.000 480.000 485.000 489.583 494.698 500.442 506.940 514.350
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 0 72 0 0 0 84 0 0 0 54 0 63 81 0 0 0 0 0 0 0 0 0 0 0 78 0 0 0 0 0 0 0 69 75 0 0 0 0 60 66 0 66 0 0 60 63 69 63 60 66 66 63 51 0 0 69 69 0 0 66 0 63 72 75 72 66 63 63 60 57 0 60 63 0 0 0 0 0 51 0 0 54 0 0 0 0 54 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 48 0 54 48 45 45 0 0 0 0 0 0 0 0 0 0 0 48 51 54 54 54 54 60 63 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="185">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.964 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 135.98 140.0 145.0 150.0 155.0 160.0 161.959 165.0 170.0 175.0 180.0 185.0 187.939 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 380.352 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.422 0.552 0.617 0.637 0.628 0.6 0.55 0.472 0.344 0.307 0.307 0.307 0.307 0.307 0.307 0.307 0.346 0.409 0.473 0.536 0.6 0.637 0.706 0.852 0.995 1.146 1.31 1.49 1.689 1.909 2.149 2.409 2.687 2.983 3.292 3.614 3.947 4.288 4.637 4.993 5.355 5.723 6.097 6.476 6.861 7.25 7.645 8.045 8.449 8.857 9.268 9.681 10.094 10.503 10.903 11.288 11.646 11.962 12.216 12.385 12.45 12.45 12.435 12.387 12.309 12.203 12.072 11.919 11.747 11.557 11.353 11.136 10.909 10.673 10.429 10.181 9.928 9.673 9.416 9.159 8.902 8.646 8.393 8.142 7.894 7.65 7.41 7.175 6.944 6.718 6.497 6.281 6.071 5.866 5.667 5.473 5.285 5.102 4.924 4.752 4.585 4.423 4.267 4.115 3.968 3.826 3.689 3.557 3.428 3.305 3.185 3.07 2.958 2.85 2.747 2.646 2.55 2.456 2.367 2.28 2.196 2.116 2.038 1.963 1.891 1.821 1.754 1.689 1.627 1.567 1.509 1.453 1.4 1.348 1.298 1.25 1.204 1.159 1.116 1.075 1.035 0.997 0.96 0.924 0.89 0.857 0.825 0.795 0.765 0.737 0.71 0.683 0.658 0.634 0.61 0.587 0.566 0.545 0.525 0.505 0.486 0.468 0.451 0.434 0.418 0.403 0.388 0.373 0.359 0.346 0.333 0.321 0.309 0.297 0.286 0.276 0.266 0.256 0.246 0.237 0.228 0.22 0.212 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.637" PeakHeight="110.0" Num="3" Error="0.0">
-24.069 5.682 -0.649
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.637" EndFrequency="12.45" PeakHeight="380.352" Num="5" zHalfNm="324.348" Error="3.725">
-180.256 -25.276 17.849 -7.475 2.745
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="77.939" Depth="0.33"/>
<TopsideChapman PeakHeight="380.352" PeakDensity="1923108.0" PeakScaleHeight="41.305" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
