<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 17:50:00.000"
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="12.0">
<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: F2o cusp not found, Multiple candidates for F2x 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" >
2026.10.20 (293) 17:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202629310201750009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.442" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.347" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="415.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="415.000" 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="8.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="501.548" 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="2.999" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.173" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="375.193" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="237.029" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.097" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="182.808" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="44.433" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="100.451" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="210.250" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.670" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="40">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
415.000 420.000 420.000 425.000 430.000 430.000 430.000 435.000 440.000 445.000 445.000 455.000 460.000 460.000 465.000 470.000 475.000 480.000 485.000 490.000 495.000 498.137 501.548 505.269 509.345 513.831 518.789 524.301 530.462 537.397 545.259 554.248 564.627 576.742 591.070 608.280 629.335 655.689 689.629 734.981
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</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 0.390625 0.390625 0.390625 1.171875 0.390625 -1.171875 0.390625 0.390625 0.390625 2.734375 -1.953125 -1.953125 -2.734375
</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" >
89.546 90.0 95.0 100.0 105.0 110.0 113.219 115.0 116.439 119.658 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 375.193 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.016 2.596 2.902 2.999 2.877 2.877 2.877 2.999 3.008 3.137 3.271 3.407 3.547 3.691 3.838 3.988 4.14 4.294 4.45 4.606 4.762 4.919 5.074 5.229 5.383 5.535 5.686 5.835 5.982 6.127 6.271 6.413 6.553 6.691 6.828 6.962 7.095 7.226 7.354 7.481 7.606 7.729 7.849 7.967 8.083 8.195 8.304 8.409 8.511 8.608 8.699 8.785 8.864 8.935 8.997 9.05 9.093 9.124 9.143 9.15 9.15 9.148 9.142 9.131 9.117 9.098 9.076 9.051 9.021 8.989 8.953 8.915 8.873 8.829 8.782 8.733 8.681 8.627 8.571 8.513 8.453 8.392 8.328 8.263 8.197 8.129 8.061 7.99 7.919 7.847 7.774 7.701 7.626 7.551 7.476 7.4 7.323 7.246 7.169 7.092 7.014 6.936 6.859 6.781 6.703 6.626 6.548 6.471 6.393 6.316 6.24 6.163 6.087 6.012 5.936 5.861 5.787 5.713 5.639 5.566 5.494 5.422 5.351 5.28 5.21 5.14 5.071 5.002 4.935 4.867 4.801 4.735 4.67 4.605 4.541 4.478 4.416 4.354 4.292 4.232 4.172 4.113 4.054 3.997 3.94 3.883 3.827 3.772 3.718 3.664 3.611 3.559 3.507 3.456 3.405 3.355 3.306 3.258 3.21 3.163 3.116 3.07 3.025 2.98 2.936 2.892 2.849 2.807 2.765 2.724 2.683 2.643 2.603 2.565 2.526 2.488 2.451 2.414 2.378 2.342 2.307 2.272 2.238 2.204 2.171 2.138

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.999" PeakHeight="110.0" Num="3" Error="0.0">
-30.194 12.701 -2.961
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.999" EndFrequency="9.15" PeakHeight="375.193" Num="5" zHalfNm="237.029" Error="1.602">
-242.27 -22.102 13.039 -5.099 0.897
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.658" Depth="0.122"/>
<TopsideChapman PeakHeight="375.193" PeakDensity="1038740.7" PeakScaleHeight="100.451" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
