<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-28 -301 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" >
2026.10.28 (301) 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">
FF202630110281840009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.571" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.096" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="450.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="450.000" 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="9.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="481.744" 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="2.714" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="359.459" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="240.029" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.317" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="163.657" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.123" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="88.679" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="175.360" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.890" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="27">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
450.000 451.667 453.333 455.000 460.000 460.000 465.000 465.000 465.000 470.000 475.000 478.197 481.744 485.703 490.149 495.178 500.913 507.514 515.194 524.238 535.049 548.197 564.534 585.380 612.901 650.912 706.825
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 66 57 66 57 66 63 63 66 63 63 63 63 63 63 63 60 60 57 54 54 51 0 0 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 -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 95.0 100.0 105.0 110.0 114.536 115.0 119.073 120.0 123.609 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 359.459 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.823 2.35 2.626 2.714 2.591 2.591 2.591 2.616 2.714 2.757 2.913 3.073 3.236 3.405 3.578 3.757 3.94 4.129 4.322 4.519 4.719 4.922 5.128 5.335 5.542 5.75 5.958 6.165 6.371 6.575 6.778 6.978 7.176 7.371 7.563 7.751 7.936 8.117 8.294 8.466 8.633 8.794 8.95 9.099 9.241 9.375 9.501 9.618 9.726 9.822 9.908 9.982 10.043 10.09 10.124 10.144 10.15 10.15 10.146 10.136 10.121 10.099 10.073 10.041 10.004 9.963 9.917 9.867 9.813 9.755 9.694 9.629 9.561 9.49 9.416 9.34 9.261 9.18 9.097 9.012 8.925 8.837 8.747 8.656 8.563 8.47 8.376 8.281 8.185 8.089 7.992 7.895 7.797 7.7 7.602 7.504 7.407 7.309 7.212 7.115 7.018 6.922 6.826 6.73 6.635 6.541 6.447 6.354 6.261 6.17 6.079 5.988 5.899 5.81 5.723 5.636 5.55 5.464 5.38 5.297 5.214 5.133 5.052 4.973 4.894 4.817 4.74 4.664 4.589 4.516 4.443 4.371 4.3 4.23 4.161 4.093 4.026 3.96 3.895 3.831 3.767 3.705 3.644 3.583 3.523 3.465 3.407 3.35 3.294 3.238 3.184 3.13 3.078 3.026 2.975 2.924 2.875 2.826 2.778 2.731 2.685 2.639 2.594 2.55 2.506 2.463 2.421 2.38 2.339 2.299 2.26 2.221 2.183 2.145 2.109 2.072 2.037 2.002 1.967 1.933 1.9 1.867 1.835 1.803 1.772 1.742

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.714" PeakHeight="110.0" Num="3" Error="0.0">
-29.935 12.326 -2.794
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.714" EndFrequency="10.15" PeakHeight="359.459" Num="5" zHalfNm="240.029" Error="1.745">
-231.318 -7.677 4.867 -2.39 0.668
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.609" Depth="0.123"/>
<TopsideChapman PeakHeight="359.459" PeakDensity="1278194.8" PeakScaleHeight="88.679" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
