<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 18:40:00.000"
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: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, 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) 18:40:00</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">
FF202630310301840009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.530" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.201" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="445.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="445.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.712" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="364.209" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="248.328" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.318" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="156.945" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.595" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="83.982" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="175.420" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.660" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="37">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
445.000 445.000 447.500 450.000 450.000 455.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 475.000 480.000 480.000 480.000 485.000 490.000 495.000 497.500 500.000 505.000 510.000 515.000 525.000 530.000 540.000 545.000 555.000 568.414 584.729 605.001 630.867 665.014
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 54 60 48 57 63 60 66 60 66 63 63 63 63 60 60 63 45 0 51 0 60 60 0 60 0 57 54 54 54 54 54 51 48 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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
</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" >
89.598 90.0 95.0 100.0 105.0 110.0 114.547 115.0 119.094 120.0 123.641 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 364.209 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.822 2.348 2.624 2.712 2.589 2.589 2.589 2.614 2.712 2.756 2.916 3.077 3.241 3.41 3.585 3.766 3.954 4.149 4.35 4.556 4.766 4.98 5.196 5.412 5.628 5.843 6.056 6.267 6.475 6.681 6.883 7.083 7.28 7.474 7.665 7.853 8.039 8.222 8.402 8.579 8.754 8.926 9.095 9.26 9.422 9.58 9.734 9.882 10.024 10.158 10.284 10.399 10.502 10.589 10.66 10.712 10.742 10.75 10.75 10.745 10.733 10.714 10.689 10.657 10.62 10.577 10.528 10.474 10.415 10.352 10.285 10.213 10.138 10.059 9.976 9.891 9.803 9.712 9.619 9.523 9.426 9.326 9.225 9.123 9.019 8.914 8.808 8.701 8.594 8.486 8.377 8.268 8.159 8.05 7.94 7.831 7.722 7.613 7.505 7.397 7.289 7.182 7.076 6.97 6.865 6.76 6.657 6.554 6.452 6.351 6.251 6.152 6.054 5.956 5.86 5.765 5.671 5.579 5.487 5.396 5.307 5.218 5.131 5.045 4.96 4.876 4.793 4.712 4.631 4.552 4.474 4.397 4.321 4.246 4.173 4.1 4.029 3.959 3.889 3.821 3.754 3.688 3.623 3.559 3.496 3.434 3.373 3.313 3.254 3.197 3.14 3.084 3.028 2.974 2.921 2.869 2.817 2.766 2.717 2.668 2.62 2.572 2.526 2.48 2.436 2.392 2.348 2.306 2.264 2.223 2.183 2.143 2.104 2.066 2.028 1.991 1.955 1.919 1.884 1.85 1.816 1.783 1.751 1.719 1.687 1.656

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.712" PeakHeight="110.0" Num="3" Error="0.0">
-29.933 12.323 -2.792
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.712" EndFrequency="10.75" PeakHeight="364.209" Num="5" zHalfNm="248.328" Error="2.832">
-226.941 -23.132 14.709 -7.152 1.948
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.641" Depth="0.123"/>
<TopsideChapman PeakHeight="364.209" PeakDensity="1433777.9" PeakScaleHeight="83.982" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
