<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 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" >
2026.11.01 (305) 21:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630511012110009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.341" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.945" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="515.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="515.000" 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="0.450" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="550.000" 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="0.640" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="456.703" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="364.402" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.025" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="134.258" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="34.979" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="68.918" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="135.770" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.910" 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" >
8.5 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 9.55 9.6 9.65 9.7 9.75 9.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
515.000 517.500 520.000 525.000 530.000 530.000 530.000 535.000 540.000 545.000 550.000 550.000 560.000 565.000 570.000 574.351 579.136 584.422 590.293 596.851 604.225 612.577 622.114 633.110 645.925 661.054 679.183
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 54 51 48 54 54 51 54 57 57 0 0 54 54 51 51 54 54 0 51 0 0 48 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 2.734375 -1.953125 1.171875 1.953125 -1.953125 -1.171875
</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" >
90.953 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 135.928 140.0 145.0 150.0 155.0 160.0 161.855 165.0 170.0 175.0 180.0 185.0 187.783 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 456.703 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.424 0.555 0.62 0.64 0.631 0.603 0.553 0.474 0.345 0.31 0.31 0.31 0.31 0.31 0.31 0.31 0.35 0.414 0.477 0.541 0.605 0.64 0.677 0.758 0.839 0.923 1.011 1.104 1.203 1.309 1.421 1.542 1.67 1.807 1.953 2.108 2.272 2.445 2.626 2.815 3.011 3.215 3.424 3.64 3.861 4.086 4.316 4.549 4.785 5.023 5.264 5.505 5.748 5.991 6.235 6.477 6.719 6.958 7.195 7.429 7.659 7.884 8.102 8.314 8.517 8.711 8.894 9.064 9.22 9.36 9.484 9.589 9.674 9.738 9.779 9.799 9.8 9.798 9.786 9.766 9.736 9.698 9.653 9.6 9.539 9.473 9.4 9.322 9.238 9.15 9.057 8.96 8.86 8.756 8.65 8.54 8.429 8.315 8.199 8.082 7.964 7.845 7.725 7.604 7.483 7.362 7.24 7.119 6.998 6.877 6.757 6.637 6.519 6.401 6.283 6.167 6.052 5.938 5.826 5.714 5.604 5.495 5.388 5.282 5.177 5.074 4.972 4.872 4.774 4.677 4.581 4.487 4.395 4.304 4.215 4.127 4.04 3.956 3.873 3.791 3.711 3.632 3.555 3.479 3.405 3.332 3.26 3.19 3.122 3.054 2.988 2.923 2.86 2.798 2.737 2.678 2.619 2.562 2.506 2.451 2.397 2.345 2.293 2.243 2.194 2.145 2.098 2.052 2.007 1.962 1.919 1.877 1.835 1.794 1.755 1.716 1.678 1.641 1.604 1.569 1.534 1.5 1.466 1.434 1.402 1.371

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.64" PeakHeight="110.0" Num="3" Error="0.0">
-24.099 5.706 -0.654
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.64" EndFrequency="9.8" PeakHeight="456.703" Num="5" zHalfNm="364.402" Error="2.952">
-263.752 -10.382 6.807 -3.418 1.825
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="77.783" Depth="0.33"/>
<TopsideChapman PeakHeight="456.703" PeakDensity="1191563.2" PeakScaleHeight="68.918" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
