<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 21:10:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, 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" >
2026.10.30 (303) 21:10:00</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">
FF202630310302110009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="9.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.370" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.804" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="540.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="540.000" 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="8.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="550.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.638" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="443.257" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="355.424" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.073" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="127.690" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="29.326" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="65.450" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="129.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.880" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
540.000 540.000 545.000 550.000 550.000 560.000 565.000 570.000 575.000 580.000 586.264 593.162 600.794 609.286 618.790 629.499 641.658
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 60 63 63 60 54 57 54 54 54 54 57 57 0 0 48 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.96 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 135.962 140.0 145.0 150.0 155.0 160.0 161.923 165.0 170.0 175.0 180.0 185.0 187.885 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 443.257 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.423 0.553 0.618 0.638 0.629 0.601 0.551 0.473 0.344 0.308 0.308 0.308 0.308 0.308 0.308 0.308 0.347 0.411 0.474 0.538 0.601 0.638 0.676 0.76 0.844 0.93 1.019 1.114 1.215 1.322 1.437 1.56 1.692 1.833 1.984 2.143 2.312 2.49 2.676 2.869 3.07 3.277 3.489 3.706 3.928 4.153 4.381 4.612 4.844 5.078 5.313 5.548 5.784 6.019 6.253 6.486 6.716 6.944 7.168 7.387 7.601 7.807 8.006 8.196 8.374 8.54 8.691 8.826 8.943 9.039 9.114 9.167 9.195 9.2 9.199 9.191 9.172 9.144 9.108 9.063 9.01 8.951 8.884 8.811 8.733 8.649 8.56 8.467 8.37 8.269 8.165 8.058 7.948 7.836 7.723 7.607 7.491 7.373 7.254 7.135 7.015 6.895 6.775 6.655 6.536 6.417 6.298 6.18 6.063 5.947 5.832 5.717 5.605 5.493 5.382 5.273 5.166 5.059 4.954 4.851 4.749 4.649 4.551 4.454 4.358 4.264 4.172 4.081 3.992 3.905 3.819 3.735 3.652 3.571 3.492 3.414 3.338 3.263 3.189 3.118 3.047 2.978 2.911 2.845 2.78 2.716 2.654 2.594 2.534 2.476 2.419 2.364 2.309 2.256 2.204 2.153 2.103 2.055 2.007 1.96 1.915 1.87 1.827 1.785 1.743 1.702 1.663 1.624 1.586 1.549 1.513 1.478 1.443 1.409 1.376 1.344 1.313 1.282 1.252 1.223 1.194 1.166 1.139 1.112 1.086 1.06

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.638" PeakHeight="110.0" Num="3" Error="0.0">
-24.079 5.69 -0.651
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.638" EndFrequency="9.2" PeakHeight="443.257" Num="5" zHalfNm="355.424" Error="3.639">
-249.111 -12.169 7.696 -3.873 2.085
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="77.885" Depth="0.33"/>
<TopsideChapman PeakHeight="443.257" PeakDensity="1050124.1" PeakScaleHeight="65.45" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
