<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-28 -301 17:10:00.000"
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" >
2026.10.28 (301) 17:10:00</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">
FF202630110281710009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.491" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.413" 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="9.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="505.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="505.000" 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="8.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" 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="3.147" 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="/" />
<Modeled Name="foF1p" Val="4.246" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="353.205" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="222.073" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.867" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="174.809" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="44.495" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="95.767" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="194.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.790" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="14">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
505.000 510.000 515.000 525.000 530.000 540.000 550.000 560.000 572.717 587.377 604.465 624.636 648.808 678.302
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 57 57 57 57 0 0 0 54 54 54 51 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
</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" >
89.522 90.0 95.0 100.0 105.0 110.0 112.573 115.0 115.146 117.719 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 353.205 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.116 2.724 3.045 3.147 3.025 3.025 3.025 3.147 3.219 3.372 3.522 3.672 3.824 3.98 4.139 4.302 4.47 4.642 4.817 4.995 5.174 5.355 5.536 5.715 5.893 6.069 6.242 6.412 6.579 6.742 6.902 7.058 7.211 7.361 7.507 7.649 7.788 7.924 8.056 8.184 8.309 8.429 8.546 8.657 8.764 8.865 8.96 9.048 9.128 9.2 9.262 9.314 9.354 9.382 9.397 9.4 9.4 9.395 9.386 9.373 9.355 9.332 9.306 9.276 9.241 9.204 9.162 9.118 9.07 9.02 8.966 8.91 8.852 8.791 8.728 8.663 8.595 8.526 8.456 8.384 8.31 8.235 8.159 8.081 8.003 7.924 7.844 7.763 7.682 7.6 7.517 7.434 7.351 7.268 7.184 7.1 7.016 6.933 6.849 6.765 6.682 6.599 6.515 6.433 6.35 6.268 6.187 6.105 6.025 5.944 5.865 5.786 5.707 5.629 5.552 5.475 5.399 5.323 5.248 5.174 5.101 5.028 4.956 4.885 4.815 4.745 4.676 4.608 4.54 4.473 4.408 4.342 4.278 4.214 4.151 4.089 4.028 3.967 3.908 3.849 3.79 3.733 3.676 3.62 3.565 3.51 3.456 3.403 3.351 3.299 3.248 3.198 3.149 3.1 3.052 3.004 2.958 2.912 2.866 2.821 2.777 2.734 2.691 2.649 2.607 2.566 2.526 2.486 2.447 2.408 2.37 2.333 2.296 2.259 2.224 2.188 2.154 2.119 2.086 2.053 2.02 1.988 1.956 1.925 1.894 1.864

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.147" PeakHeight="110.0" Num="3" Error="0.0">
-30.315 12.879 -3.042
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.147" EndFrequency="9.4" PeakHeight="353.205" Num="5" zHalfNm="222.073" Error="3.827">
-227.045 -14.408 9.291 -5.065 1.741
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.719" Depth="0.122"/>
<TopsideChapman PeakHeight="353.205" PeakDensity="1096277.9" PeakScaleHeight="95.767" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
