<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-28 -301 20:10:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, 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) 20:10:00</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">
FF202630110282010009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.537" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.511" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="435.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="435.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.805" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="376.907" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.829" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.448" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="141.322" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.941" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="73.777" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="151.540" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.720" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="36">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
435.000 437.500 440.000 440.000 440.000 440.000 445.000 445.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 475.000 480.000 480.000 486.250 492.500 498.750 505.000 510.000 515.162 520.701 526.660 533.087 540.041 547.589 555.811 564.800 574.670 585.557 597.627 611.083
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 63 51 0 0 60 66 60 66 63 57 66 0 63 63 60 0 0 0 0 60 63 57 57 0 0 0 0 0 0 0 0 0 51
</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 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 -1.171875 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" >
89.821 90.0 95.0 100.0 105.0 110.0 115.0 119.321 120.0 125.0 128.642 130.0 135.0 137.963 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 376.907 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.215 1.208 1.563 1.747 1.805 1.766 1.668 1.668 1.668 1.668 1.688 1.761 1.805 1.866 2.011 2.154 2.299 2.449 2.606 2.771 2.945 3.128 3.321 3.523 3.734 3.952 4.177 4.406 4.638 4.872 5.106 5.34 5.573 5.804 6.033 6.259 6.483 6.705 6.924 7.14 7.354 7.565 7.774 7.98 8.183 8.383 8.579 8.773 8.962 9.146 9.325 9.497 9.661 9.816 9.96 10.091 10.205 10.301 10.374 10.424 10.448 10.45 10.448 10.438 10.419 10.392 10.357 10.314 10.264 10.208 10.145 10.077 10.002 9.923 9.839 9.751 9.658 9.562 9.462 9.36 9.254 9.146 9.035 8.923 8.809 8.693 8.576 8.458 8.339 8.219 8.099 7.978 7.857 7.736 7.616 7.495 7.375 7.255 7.135 7.017 6.899 6.781 6.665 6.55 6.435 6.322 6.21 6.099 5.989 5.88 5.773 5.667 5.562 5.459 5.357 5.256 5.157 5.059 4.963 4.868 4.775 4.683 4.592 4.503 4.416 4.33 4.245 4.161 4.079 3.999 3.92 3.842 3.765 3.69 3.617 3.544 3.473 3.403 3.335 3.268 3.202 3.137 3.073 3.011 2.95 2.89 2.831 2.773 2.717 2.661 2.607 2.553 2.501 2.45 2.399 2.35 2.302 2.254 2.208 2.162 2.118 2.074 2.031 1.989 1.948 1.908 1.868 1.829 1.792 1.754 1.718 1.682 1.647 1.613 1.58 1.547 1.515 1.483 1.452 1.422 1.393 1.364 1.335 1.307 1.28 1.253 1.227

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.805" PeakHeight="110.0" Num="3" Error="0.0">
-28.743 10.686 -2.122
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.805" EndFrequency="10.45" PeakHeight="376.907" Num="5" zHalfNm="275.829" Error="3.618">
-227.218 -20.244 13.302 -7.337 2.553
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="27.963" Depth="0.137"/>
<TopsideChapman PeakHeight="376.907" PeakDensity="1354869.8" PeakScaleHeight="73.777" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
