<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 12:00:00.000"
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" >
2026.11.02 (306) 12:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630611021200009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.783" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.435" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" 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="8.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="430.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.102" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.224" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="318.761" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.800" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.977" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="116.858" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="32.432" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.262" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="151.450" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="106">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.25 4.3 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 220.000 225.000 230.000 235.000 240.000 245.000 247.102 249.205 251.307 253.409 255.511 257.614 259.716 261.818 263.920 266.023 268.125 270.227 272.330 274.432 276.534 278.636 280.739 282.841 284.943 287.045 289.148 291.250 293.352 295.455 297.557 299.659 301.761 303.864 305.966 308.068 310.170 312.273 314.375 316.477 318.580 320.682 322.784 324.886 326.989 329.091 331.193 333.295 335.398 337.500 339.602 341.705 343.807 345.909 348.011 350.114 352.216 354.318 356.420 358.523 360.625 362.727 364.830 366.932 369.034 371.136 373.239 375.341 377.443 379.545 381.648 383.750 385.852 387.955 390.057 392.159 394.261 396.364 398.466 400.568 402.670 404.773 406.875 408.977 411.080 413.182 415.284 417.386 419.489 421.591 423.693 425.795 427.898 430.000 435.000 440.000 445.000 449.398 454.720 461.293 469.617 480.497 495.326 516.729 550.326
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 57 54 57 57 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 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 54 51 48 0 54 0 54 51 51 48 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 1.171875 0.390625 -2.734375 0.390625 0.390625 0.390625 -2.734375 -1.171875 2.734375 -2.734375 0.390625 -2.734375 2.734375 2.734375 -1.953125 -1.953125 1.953125 1.171875 -2.734375 1.171875 -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 1.171875 -0.390625 1.953125 -1.953125 1.953125 -0.390625 2.734375 -0.390625 2.734375 -2.734375 2.734375 -0.390625 -1.171875 1.953125 0.390625 0.390625 2.734375 0.390625 1.953125 -1.171875 2.734375 -1.171875 -1.953125 0.390625 1.171875 -1.953125 -1.171875 -0.390625 1.171875 2.734375 0.390625 -2.734375 -1.171875 -0.390625 -2.734375 -0.390625 -0.390625 -2.734375 0.390625 -0.390625 -0.390625 2.734375 -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 -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" >
89.529 90.0 95.0 100.0 105.0 110.0 112.767 115.0 115.533 118.3 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 318.761 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.086 2.685 3.001 3.102 2.98 2.98 2.98 3.102 3.15 3.293 3.441 3.594 3.75 3.908 4.069 4.231 4.395 4.56 4.726 4.893 5.061 5.23 5.4 5.57 5.742 5.915 6.089 6.264 6.44 6.618 6.796 6.976 7.157 7.34 7.523 7.707 7.891 8.075 8.258 8.439 8.617 8.79 8.954 9.106 9.242 9.355 9.439 9.489 9.5 9.5 9.492 9.474 9.447 9.411 9.367 9.314 9.255 9.188 9.115 9.036 8.952 8.863 8.769 8.671 8.569 8.464 8.355 8.244 8.131 8.016 7.899 7.78 7.66 7.54 7.418 7.296 7.174 7.052 6.929 6.807 6.685 6.564 6.443 6.324 6.205 6.086 5.969 5.854 5.739 5.625 5.513 5.403 5.293 5.185 5.079 4.974 4.871 4.769 4.669 4.571 4.474 4.379 4.285 4.193 4.102 4.014 3.926 3.841 3.757 3.675 3.594 3.515 3.437 3.361 3.286 3.213 3.141 3.071 3.002 2.935 2.869 2.804 2.741 2.679 2.618 2.559 2.501 2.444 2.389 2.334 2.281 2.229 2.178 2.128 2.079 2.032 1.985 1.94 1.895 1.852 1.809 1.768 1.727 1.687 1.648 1.61 1.573 1.537 1.501 1.467 1.433 1.4 1.367 1.336 1.305 1.275 1.245 1.216 1.188 1.16 1.134 1.107 1.082 1.057 1.032 1.008 0.985 0.962 0.939 0.918 0.896 0.876 0.855 0.835 0.816 0.797 0.778 0.76 0.743 0.725 0.708 0.692 0.676 0.66 0.645 0.63

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.102" PeakHeight="110.0" Num="3" Error="0.0">
-30.279 12.826 -3.018
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.102" EndFrequency="9.5" PeakHeight="318.761" Num="5" zHalfNm="227.8" Error="1.193">
-169.127 -41.081 11.674 -1.829 -0.098
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.3" Depth="0.122"/>
<TopsideChapman PeakHeight="318.761" PeakDensity="1119727.0" PeakScaleHeight="66.262" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
