<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 17:40:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.10.24 (297) 17:40:00</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">
FF202629710241740009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.536" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.753" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="470.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="470.000" 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="9.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" 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="3.038" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.192" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="348.791" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="230.387" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.045" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="158.374" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.365" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="85.475" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="177.640" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.690" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.5 10.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
470.000 475.000 475.000 480.000 485.000 485.000 485.000 490.000 495.000 500.000 504.606 509.646 515.183 521.296 528.079 535.648 544.149 553.765 564.730 577.352 592.034 609.327 629.994
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 60 57 54 60 57 57 54 54 54 54 57 57 54 57 54 54 51 51 48 42 42
</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
</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" >
89.539 90.0 95.0 100.0 105.0 110.0 113.049 115.0 116.098 119.147 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 348.791 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.042 2.63 2.939 3.038 2.916 2.916 2.916 3.038 3.07 3.246 3.416 3.586 3.757 3.934 4.116 4.306 4.502 4.705 4.915 5.129 5.347 5.567 5.788 6.007 6.224 6.438 6.648 6.854 7.055 7.252 7.445 7.634 7.819 7.999 8.176 8.35 8.519 8.686 8.848 9.008 9.163 9.315 9.463 9.606 9.744 9.876 10.001 10.118 10.226 10.322 10.403 10.469 10.517 10.544 10.55 10.55 10.545 10.533 10.514 10.49 10.459 10.423 10.382 10.335 10.284 10.227 10.167 10.102 10.034 9.961 9.886 9.807 9.725 9.641 9.554 9.465 9.373 9.28 9.184 9.087 8.989 8.889 8.789 8.687 8.584 8.481 8.377 8.272 8.167 8.062 7.957 7.852 7.746 7.641 7.536 7.431 7.327 7.223 7.119 7.016 6.913 6.812 6.71 6.61 6.51 6.411 6.313 6.216 6.119 6.024 5.93 5.836 5.743 5.652 5.561 5.472 5.383 5.296 5.21 5.124 5.04 4.957 4.875 4.794 4.714 4.636 4.558 4.481 4.406 4.331 4.258 4.185 4.114 4.044 3.975 3.907 3.84 3.774 3.708 3.644 3.581 3.519 3.458 3.398 3.339 3.281 3.223 3.167 3.112 3.057 3.003 2.951 2.899 2.848 2.797 2.748 2.699 2.652 2.605 2.559 2.513 2.469 2.425 2.382 2.34 2.298 2.257 2.217 2.177 2.138 2.1 2.063 2.026 1.99 1.954 1.919 1.885 1.851 1.818 1.785 1.753 1.722 1.691 1.661 1.631 1.602

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.038" PeakHeight="110.0" Num="3" Error="0.0">
-30.227 12.749 -2.983
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.038" EndFrequency="10.55" PeakHeight="348.791" Num="5" zHalfNm="230.387" Error="4.538">
-217.517 -20.817 13.578 -7.362 2.474
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.147" Depth="0.122"/>
<TopsideChapman PeakHeight="348.791" PeakDensity="1380924.4" PeakScaleHeight="85.475" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
