<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 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 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" >
2026.10.29 (302) 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">
FF202630210291840009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.510" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.097" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="490.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="490.000" 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="8.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="2.713" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="361.014" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="239.083" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.317" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="164.671" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="43.414" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="89.092" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="181.500" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.770" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="18">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
490.000 490.000 495.000 500.000 500.000 505.000 510.000 520.000 525.000 535.000 540.000 555.000 565.000 575.000 590.000 612.500 636.741 667.674
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 63 63 63 63 63 63 66 63 63 63 63 63 60 60 0 54 54
</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
</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" >
89.597 90.0 95.0 100.0 105.0 110.0 114.542 115.0 119.083 120.0 123.625 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 361.014 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.822 2.349 2.625 2.713 2.59 2.59 2.59 2.615 2.713 2.756 2.908 3.058 3.209 3.363 3.52 3.683 3.85 4.023 4.202 4.385 4.572 4.762 4.955 5.148 5.341 5.534 5.726 5.915 6.102 6.286 6.467 6.645 6.82 6.992 7.16 7.325 7.487 7.646 7.801 7.953 8.101 8.246 8.386 8.523 8.655 8.782 8.903 9.018 9.125 9.225 9.316 9.396 9.464 9.52 9.562 9.588 9.6 9.6 9.598 9.591 9.578 9.559 9.536 9.508 9.475 9.437 9.395 9.35 9.3 9.247 9.19 9.13 9.068 9.002 8.933 8.862 8.789 8.714 8.636 8.557 8.476 8.393 8.309 8.224 8.137 8.05 7.962 7.872 7.783 7.692 7.601 7.51 7.418 7.327 7.235 7.143 7.051 6.959 6.867 6.775 6.684 6.593 6.503 6.413 6.323 6.234 6.145 6.057 5.97 5.883 5.797 5.712 5.627 5.543 5.46 5.378 5.296 5.216 5.136 5.057 4.979 4.901 4.825 4.75 4.675 4.601 4.529 4.457 4.386 4.316 4.247 4.178 4.111 4.045 3.979 3.915 3.851 3.788 3.726 3.665 3.605 3.545 3.487 3.429 3.373 3.317 3.262 3.207 3.154 3.101 3.05 2.999 2.948 2.899 2.85 2.802 2.755 2.709 2.663 2.618 2.574 2.53 2.487 2.445 2.404 2.363 2.323 2.283 2.244 2.206 2.168 2.131 2.095 2.059 2.024 1.989 1.955 1.922 1.889 1.857 1.825 1.793 1.763 1.732 1.703 1.673

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.713" PeakHeight="110.0" Num="3" Error="0.0">
-29.934 12.324 -2.793
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.713" EndFrequency="9.6" PeakHeight="361.014" Num="5" zHalfNm="239.083" Error="3.485">
-228.105 -15.79 10.105 -5.404 1.805
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.625" Depth="0.123"/>
<TopsideChapman PeakHeight="361.014" PeakDensity="1143424.4" PeakScaleHeight="89.092" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
