<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 17:50:00.000"
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="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: F2x cusp not found, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.10.30 (303) 17:50:00</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">
FF202630310301750009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.586" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.988" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="265.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="265.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" 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="2.986" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.167" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="363.082" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="264.808" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.099" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="128.843" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="40.153" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="72.848" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="167.110" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="115">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.35 4.4 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
265.000 270.000 275.000 280.000 285.000 288.333 291.667 295.000 300.000 301.852 303.704 305.556 307.407 309.259 311.111 312.963 314.815 316.667 318.519 320.370 322.222 324.074 325.926 327.778 329.630 331.481 333.333 335.185 337.037 338.889 340.741 342.593 344.444 346.296 348.148 350.000 351.852 353.704 355.556 357.407 359.259 361.111 362.963 364.815 366.667 368.519 370.370 372.222 374.074 375.926 377.778 379.630 381.481 383.333 385.185 387.037 388.889 390.741 392.593 394.444 396.296 398.148 400.000 401.852 403.704 405.556 407.407 409.259 411.111 412.963 414.815 416.667 418.519 420.370 422.222 424.074 425.926 427.778 429.630 431.481 433.333 435.185 437.037 438.889 440.741 442.593 444.444 446.296 448.148 450.000 453.000 456.000 459.000 462.000 465.000 460.000 463.750 467.500 471.250 475.000 475.000 485.000 487.500 490.000 500.000 500.000 505.000 515.000 520.000 530.000 540.000 552.709 567.955 586.583 609.855
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 57 63 60 51 0 0 60 60 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 51 0 0 0 0 48 0 0 54 0 63 57 0 0 60 0 57 57 60 57 51 54 54 51 45 45
</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 -2.734375 1.171875 1.953125 -1.953125 0.390625 0.390625 -0.390625 -2.734375 -1.171875 -1.953125 -1.171875 -1.953125 2.734375 -1.171875 -1.171875 1.171875 -2.734375 0.390625 1.953125 -1.953125 -2.734375 -1.953125 2.734375 -1.171875 -2.734375 2.734375 -1.171875 1.171875 -2.734375 -1.953125 -0.390625 -0.390625 1.953125 1.953125 1.953125 0.390625 1.953125 2.734375 1.171875 0.390625 1.953125 0.390625 1.171875 -1.171875 -2.734375 0.390625 2.734375 1.953125 -0.390625 2.734375 0.390625 -0.390625 1.953125 2.734375 1.953125 1.953125 -2.734375 -2.734375 -0.390625 1.171875 1.171875 2.734375 0.390625 0.390625 0.390625 0.390625 -1.953125 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
</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" >
89.548 90.0 95.0 100.0 105.0 110.0 113.28 115.0 116.559 119.839 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 363.082 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.007 2.585 2.889 2.986 2.864 2.864 2.864 2.986 2.99 3.122 3.248 3.371 3.493 3.615 3.737 3.859 3.983 4.107 4.234 4.362 4.493 4.626 4.761 4.899 5.039 5.182 5.328 5.476 5.628 5.782 5.939 6.099 6.261 6.427 6.595 6.765 6.938 7.113 7.29 7.47 7.65 7.833 8.016 8.2 8.384 8.567 8.749 8.928 9.104 9.274 9.435 9.586 9.723 9.842 9.938 10.006 10.044 10.05 10.049 10.041 10.025 10.0 9.967 9.927 9.879 9.825 9.765 9.699 9.627 9.55 9.469 9.383 9.293 9.2 9.103 9.003 8.9 8.794 8.687 8.577 8.466 8.353 8.239 8.124 8.008 7.891 7.774 7.657 7.539 7.421 7.303 7.186 7.069 6.952 6.836 6.72 6.606 6.492 6.379 6.267 6.155 6.045 5.936 5.829 5.722 5.617 5.513 5.41 5.309 5.208 5.11 5.012 4.917 4.822 4.729 4.637 4.547 4.458 4.371 4.285 4.2 4.117 4.035 3.955 3.876 3.798 3.722 3.647 3.573 3.501 3.43 3.361 3.292 3.225 3.159 3.095 3.031 2.969 2.908 2.848 2.79 2.732 2.676 2.621 2.566 2.513 2.461 2.41 2.36 2.311 2.263 2.216 2.169 2.124 2.08 2.036 1.994 1.952 1.911 1.871 1.832 1.794 1.756 1.719 1.683 1.648 1.613 1.579 1.546 1.513 1.481 1.45 1.42 1.39 1.361 1.332 1.304 1.276 1.249 1.223 1.197 1.172 1.147 1.123 1.099 1.076

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.986" PeakHeight="110.0" Num="3" Error="0.0">
-30.183 12.685 -2.954
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.986" EndFrequency="10.05" PeakHeight="363.082" Num="5" zHalfNm="264.808" Error="2.435">
-199.702 -54.028 10.395 -0.666 0.758
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.839" Depth="0.122"/>
<TopsideChapman PeakHeight="363.082" PeakDensity="1253132.8" PeakScaleHeight="72.848" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
