<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 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 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" >
2026.10.23 (296) 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">
FF202629610231740009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="12.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.567" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.929" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="440.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="440.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" 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="3.039" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.193" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="354.361" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="240.122" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.045" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="154.955" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="63.793" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.878" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="171.650" 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="37">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
445.000 442.500 440.000 440.000 445.000 450.000 450.000 455.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 480.000 480.000 480.000 490.000 490.000 495.000 495.000 505.000 509.646 514.836 520.673 527.284 534.836 543.544 553.696 565.684 580.054 597.595 619.489 647.582
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 0 57 0 0 57 57 54 0 0 0 0 0 0 0 0 0 0 0 57 0 54 0 54 51 57 60 60 57 0 54 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 0.390625 1.171875 0.390625 0.390625 -0.390625 -2.734375 -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 95.0 100.0 105.0 110.0 113.043 115.0 116.086 119.129 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 354.361 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.043 2.63 2.94 3.039 2.917 2.917 2.917 3.039 3.072 3.26 3.446 3.633 3.825 4.023 4.228 4.442 4.664 4.894 5.131 5.374 5.622 5.873 6.124 6.376 6.627 6.875 7.12 7.362 7.6 7.835 8.066 8.292 8.515 8.734 8.95 9.162 9.37 9.575 9.776 9.973 10.167 10.357 10.542 10.722 10.897 11.065 11.226 11.379 11.521 11.652 11.768 11.867 11.947 12.006 12.04 12.05 12.05 12.045 12.031 12.01 11.981 11.945 11.902 11.852 11.797 11.735 11.668 11.595 11.518 11.436 11.35 11.26 11.165 11.068 10.967 10.863 10.757 10.647 10.536 10.423 10.308 10.191 10.072 9.953 9.832 9.71 9.588 9.465 9.342 9.218 9.094 8.97 8.845 8.721 8.598 8.474 8.351 8.229 8.107 7.986 7.865 7.745 7.626 7.508 7.391 7.275 7.16 7.046 6.933 6.821 6.71 6.601 6.493 6.385 6.28 6.175 6.072 5.97 5.869 5.77 5.672 5.575 5.48 5.386 5.293 5.201 5.111 5.022 4.935 4.848 4.763 4.68 4.597 4.516 4.436 4.358 4.28 4.204 4.129 4.056 3.983 3.912 3.841 3.772 3.705 3.638 3.572 3.508 3.444 3.382 3.32 3.26 3.201 3.143 3.085 3.029 2.974 2.92 2.866 2.814 2.762 2.712 2.662 2.613 2.565 2.518 2.472 2.426 2.382 2.338 2.295 2.253 2.211 2.17 2.13 2.091 2.052 2.014 1.977 1.94 1.905 1.869 1.835 1.801 1.767 1.735

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.039" PeakHeight="110.0" Num="3" Error="0.0">
-30.228 12.75 -2.983
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.039" EndFrequency="12.05" PeakHeight="354.361" Num="5" zHalfNm="240.122" Error="3.224">
-223.197 -20.638 13.431 -6.969 2.141
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.129" Depth="0.122"/>
<TopsideChapman PeakHeight="354.361" PeakDensity="1801519.9" PeakScaleHeight="82.878" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
