<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 12:30:00.000"
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) 12:30:00</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">
FF202630310301230009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.557" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.655" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.550" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="515.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.204" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.273" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="312.027" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="201.162" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.014" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="148.348" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="36.638" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.549" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="163.310" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.860" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="7">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
8.95 9.0 9.05 9.1 9.15 9.2 9.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
515.000 519.632 525.544 533.350 544.133 560.000 585.653
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 0 48 0 45 51 48
</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
</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" >
89.512 90.0 95.0 100.0 105.0 110.0 112.329 114.658 115.0 116.987 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 312.027 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.155 2.773 3.1 3.204 3.082 3.082 3.1 3.204 3.316 3.497 3.676 3.857 4.042 4.232 4.427 4.628 4.832 5.041 5.252 5.464 5.675 5.885 6.092 6.296 6.495 6.69 6.88 7.065 7.245 7.419 7.589 7.753 7.911 8.064 8.21 8.35 8.483 8.609 8.726 8.835 8.933 9.02 9.095 9.156 9.202 9.234 9.249 9.25 9.249 9.242 9.228 9.208 9.183 9.151 9.115 9.074 9.027 8.977 8.922 8.863 8.8 8.734 8.664 8.591 8.516 8.438 8.357 8.275 8.19 8.104 8.015 7.926 7.835 7.742 7.649 7.555 7.46 7.365 7.269 7.173 7.076 6.979 6.882 6.786 6.689 6.592 6.496 6.4 6.305 6.21 6.115 6.021 5.928 5.835 5.743 5.652 5.562 5.472 5.383 5.295 5.208 5.122 5.037 4.953 4.87 4.788 4.707 4.627 4.547 4.469 4.392 4.316 4.241 4.168 4.095 4.023 3.952 3.882 3.814 3.746 3.679 3.614 3.549 3.486 3.423 3.361 3.301 3.241 3.182 3.125 3.068 3.012 2.957 2.903 2.85 2.798 2.747 2.696 2.647 2.598 2.55 2.503 2.457 2.411 2.367 2.323 2.28 2.238 2.196 2.155 2.115 2.076 2.037 1.999 1.962 1.925 1.889 1.854 1.819 1.785 1.752 1.719 1.687 1.655 1.624 1.594 1.564 1.534 1.505 1.477 1.449 1.422 1.395 1.369 1.343 1.318 1.293 1.269 1.245 1.221 1.198 1.176 1.154 1.132 1.11 1.089

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.204" PeakHeight="110.0" Num="3" Error="0.0">
-30.361 12.945 -3.072
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.204" EndFrequency="9.25" PeakHeight="312.027" Num="5" zHalfNm="201.162" Error="3.268">
-190.104 -8.469 5.504 -3.131 1.16
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.987" Depth="0.122"/>
<TopsideChapman PeakHeight="312.027" PeakDensity="1061569.5" PeakScaleHeight="81.549" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
