<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 19:10:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: One of F2 cusps was derived from the other</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" >
2026.11.01 (305) 19:10:00</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">
FF202630511011910009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.682" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.168" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="450.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.490" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="355.652" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="263.402" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.828" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="127.379" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.880" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="68.895" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="145.740" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.570" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="142">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.2 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 260.000 260.000 265.000 265.000 265.000 265.000 265.000 270.000 270.000 265.000 266.500 268.000 269.500 271.000 272.500 274.000 275.500 277.000 278.500 280.000 281.500 283.000 284.500 286.000 287.500 289.000 290.500 292.000 293.500 295.000 296.500 298.000 299.500 301.000 302.500 304.000 305.500 307.000 308.500 310.000 311.500 313.000 314.500 316.000 317.500 319.000 320.500 322.000 323.500 325.000 326.500 328.000 329.500 331.000 332.500 334.000 335.500 337.000 338.500 340.000 341.500 343.000 344.500 346.000 347.500 349.000 350.500 352.000 353.500 355.000 356.500 358.000 359.500 361.000 362.500 364.000 365.500 367.000 368.500 370.000 371.667 373.333 375.000 376.667 378.333 380.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 392.500 395.000 397.500 400.000 400.000 400.000 405.000 405.000 405.000 407.500 410.000 410.000 415.000 415.000 420.000 420.000 420.000 420.000 422.500 425.000 430.000 435.000 435.000 435.000 440.000 445.000 445.000 445.000 450.000 450.000 455.000 460.000 464.789 470.064 475.901 482.397 489.669 497.865 507.173 517.837 530.175 544.615 561.746 582.395 607.771
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 69 66 66 66 66 66 63 66 66 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 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 72 0 0 0 66 72 0 66 66 60 0 66 69 66 69 63 63 0 66 0 66 57 63 66 63 0 63 60 60 60 60 60 57 51 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 2.734375 2.734375 -0.390625 -2.734375 -2.734375 -0.390625 -1.171875 0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 1.953125 0.390625 -0.390625 -0.390625 1.953125 -0.390625 -0.390625 -1.953125 1.171875 1.953125 1.953125 -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 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -0.390625 1.953125 -1.171875 -2.734375 -1.171875 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" >
89.642 90.0 95.0 100.0 105.0 110.0 115.0 115.634 120.0 121.267 125.0 126.901 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 355.652 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.23 1.672 2.156 2.409 2.49 2.392 2.365 2.365 2.365 2.448 2.49 2.591 2.752 2.912 3.072 3.235 3.4 3.568 3.739 3.914 4.094 4.278 4.466 4.659 4.856 5.058 5.265 5.476 5.691 5.91 6.134 6.361 6.592 6.826 7.064 7.303 7.545 7.789 8.033 8.278 8.523 8.767 9.01 9.249 9.484 9.713 9.935 10.148 10.35 10.538 10.71 10.863 10.994 11.101 11.18 11.23 11.25 11.25 11.246 11.23 11.204 11.169 11.123 11.069 11.006 10.935 10.857 10.772 10.681 10.584 10.481 10.374 10.262 10.146 10.026 9.903 9.776 9.648 9.517 9.384 9.249 9.113 8.976 8.838 8.699 8.56 8.42 8.281 8.142 8.003 7.864 7.726 7.589 7.453 7.318 7.183 7.05 6.918 6.788 6.659 6.531 6.405 6.28 6.157 6.036 5.916 5.798 5.682 5.567 5.454 5.343 5.234 5.127 5.021 4.917 4.815 4.714 4.616 4.519 4.424 4.33 4.239 4.149 4.06 3.974 3.889 3.806 3.724 3.644 3.565 3.488 3.413 3.339 3.266 3.195 3.126 3.058 2.991 2.926 2.862 2.799 2.738 2.678 2.619 2.561 2.505 2.45 2.396 2.343 2.291 2.241 2.191 2.143 2.095 2.049 2.003 1.959 1.916 1.873 1.831 1.791 1.751 1.712 1.674 1.637 1.6 1.565 1.53 1.496 1.462 1.43 1.398 1.367 1.336 1.306 1.277 1.249 1.221 1.194 1.167 1.141 1.115 1.091 1.066 1.042 1.019 0.996

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.49" PeakHeight="110.0" Num="3" Error="0.0">
-29.704 11.996 -2.65
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.49" EndFrequency="11.25" PeakHeight="355.652" Num="5" zHalfNm="263.402" Error="2.143">
-204.971 -31.107 7.623 -0.788 0.492
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="16.901" Depth="0.125"/>
<TopsideChapman PeakHeight="355.652" PeakDensity="1570254.4" PeakScaleHeight="68.895" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
