<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-26 -299 19:20:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2o cusp</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" >
2026.10.26 (299) 19:20:00</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">
FF202629910261920009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.583" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.413" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.350" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="515.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.409" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="333.158" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="235.790" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.441" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="135.628" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.431" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="72.838" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="141.340" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.990" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="6">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
10.75 10.8 10.85 10.9 10.95 11.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
515.000 530.000 540.000 555.000 575.000 596.862
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 51 48 45 45
</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
</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" >
89.659 90.0 95.0 100.0 105.0 110.0 115.0 116.04 120.0 122.081 125.0 128.121 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 333.158 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.617 2.086 2.331 2.409 2.323 2.283 2.283 2.283 2.344 2.409 2.478 2.666 2.86 3.061 3.27 3.488 3.714 3.949 4.192 4.443 4.701 4.966 5.236 5.51 5.787 6.067 6.348 6.629 6.909 7.188 7.463 7.736 8.003 8.266 8.523 8.772 9.014 9.247 9.47 9.682 9.883 10.07 10.243 10.401 10.543 10.667 10.773 10.86 10.926 10.971 10.996 11.0 10.999 10.991 10.973 10.945 10.91 10.866 10.814 10.755 10.689 10.617 10.538 10.454 10.365 10.271 10.173 10.071 9.965 9.855 9.743 9.627 9.51 9.39 9.268 9.144 9.02 8.894 8.767 8.639 8.511 8.382 8.253 8.124 7.995 7.867 7.738 7.611 7.483 7.357 7.231 7.107 6.983 6.86 6.738 6.618 6.499 6.381 6.264 6.149 6.035 5.922 5.811 5.702 5.594 5.487 5.382 5.279 5.177 5.076 4.977 4.88 4.784 4.69 4.598 4.507 4.417 4.329 4.243 4.158 4.074 3.992 3.912 3.833 3.755 3.679 3.604 3.53 3.458 3.388 3.318 3.25 3.183 3.118 3.054 2.991 2.929 2.868 2.809 2.751 2.694 2.638 2.583 2.529 2.477 2.425 2.375 2.325 2.276 2.229 2.182 2.137 2.092 2.048 2.005 1.963 1.922 1.882 1.842 1.803 1.765 1.728 1.692 1.656 1.622 1.587 1.554 1.521 1.489 1.458 1.427 1.397 1.367 1.339 1.31 1.283 1.256 1.229 1.203 1.178 1.153 1.128 1.105 1.081 1.058 1.036

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.409" PeakHeight="110.0" Num="3" Error="0.0">
-29.611 11.865 -2.595
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.409" EndFrequency="11.0" PeakHeight="333.158" Num="5" zHalfNm="235.79" Error="1.231">
-203.306 -2.942 1.868 -1.082 0.425
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="18.121" Depth="0.126"/>
<TopsideChapman PeakHeight="333.158" PeakDensity="1501240.8" PeakScaleHeight="72.838" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
