<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 17:10:00.000"
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: 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) 17:10:00</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">
FF202630310301710009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.508" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.828" 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="9.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="8.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.144" 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="4.244" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="377.645" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="256.928" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.868" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="158.564" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="43.790" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.486" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="196.220" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.490" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="104">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 240.000 250.000 260.000 270.000 280.000 290.000 292.500 295.000 297.500 300.000 302.500 305.000 307.500 310.000 312.500 315.000 317.500 320.000 322.500 325.000 327.500 330.000 332.500 335.000 337.500 340.000 342.500 345.000 347.500 350.000 352.500 355.000 357.500 360.000 362.500 365.000 367.500 370.000 372.500 375.000 377.500 380.000 382.500 385.000 387.500 390.000 392.500 395.000 397.500 400.000 402.500 405.000 407.500 410.000 412.500 415.000 417.500 420.000 422.500 425.000 427.500 430.000 432.500 435.000 437.500 440.000 442.500 445.000 447.500 450.000 452.500 455.000 457.500 460.000 462.500 465.000 467.500 470.000 472.500 475.000 477.500 480.000 482.500 485.000 487.500 490.000 492.500 495.000 497.500 500.000 510.000 515.000 515.000 525.000 532.236 540.759 550.945 563.336 578.731 598.376 624.311 660.135 712.835
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 57 0 60 0 51 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 57 51 0 57 57 57 57 0 51 54 48 54 51 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -0.390625 0.390625 1.953125 -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 2.734375 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 -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 -1.953125 -0.390625 1.171875 -0.390625 0.390625 -2.734375 -2.734375 -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
</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" >
89.521 90.0 95.0 100.0 105.0 110.0 112.584 115.0 115.168 117.752 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 377.645 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.114 2.721 3.042 3.144 3.022 3.022 3.022 3.144 3.197 3.316 3.438 3.562 3.686 3.811 3.936 4.061 4.186 4.31 4.435 4.559 4.684 4.808 4.934 5.06 5.186 5.313 5.442 5.571 5.702 5.834 5.968 6.103 6.24 6.379 6.519 6.662 6.806 6.953 7.101 7.251 7.402 7.554 7.707 7.86 8.013 8.164 8.313 8.458 8.599 8.734 8.861 8.981 9.09 9.188 9.274 9.347 9.407 9.452 9.482 9.498 9.5 9.499 9.494 9.483 9.467 9.446 9.421 9.39 9.356 9.317 9.274 9.228 9.178 9.124 9.067 9.008 8.945 8.88 8.812 8.742 8.67 8.595 8.519 8.441 8.362 8.281 8.199 8.115 8.031 7.946 7.859 7.772 7.685 7.596 7.508 7.419 7.329 7.24 7.15 7.061 6.971 6.882 6.792 6.703 6.614 6.526 6.437 6.35 6.262 6.175 6.089 6.003 5.918 5.833 5.749 5.666 5.583 5.502 5.42 5.34 5.261 5.182 5.104 5.027 4.95 4.875 4.8 4.726 4.653 4.581 4.51 4.44 4.37 4.301 4.234 4.167 4.101 4.036 3.971 3.908 3.845 3.784 3.723 3.663 3.604 3.545 3.488 3.431 3.375 3.32 3.266 3.213 3.16 3.108 3.057 3.007 2.957 2.908 2.86 2.813 2.766 2.72 2.675 2.631 2.587 2.544 2.502 2.46 2.419 2.378 2.339 2.299 2.261 2.223 2.186 2.149 2.113 2.077 2.042 2.008 1.974 1.941 1.908 1.876 1.844 1.813

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.144" PeakHeight="110.0" Num="3" Error="0.0">
-30.313 12.875 -3.041
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.144" EndFrequency="9.5" PeakHeight="377.645" Num="5" zHalfNm="256.928" Error="3.396">
-228.208 -39.463 6.332 2.712 -1.266
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.752" Depth="0.122"/>
<TopsideChapman PeakHeight="377.645" PeakDensity="1119727.0" PeakScaleHeight="90.486" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
