<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 08:20:00.000"
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="15.0">
<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 22 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 80% PACIFIC flags: Moderate F-spread, 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" >
2026.10.15 (288) 08:20:00</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">
FF202628810150820009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.057" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.519" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="680.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="680.000" 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="5.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="695.961" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.724" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="522.310" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="386.350" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.486" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="193.724" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="16.773" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="101.207" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="199.120" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.910" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="10">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
680.000 684.269 689.474 695.961 704.269 715.291 730.616 753.374 790.705 863.205
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 57 63 63 0 63 60 0 54
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.713 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 134.512 135.0 140.0 145.0 150.0 155.0 159.025 160.0 165.0 170.0 175.0 180.0 183.537 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 522.31 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.481 0.627 0.701 0.724 0.713 0.68 0.62 0.525 0.386 0.386 0.386 0.386 0.386 0.386 0.386 0.399 0.468 0.537 0.606 0.675 0.724 0.738 0.786 0.835 0.884 0.934 0.987 1.04 1.096 1.154 1.215 1.277 1.343 1.411 1.481 1.554 1.629 1.707 1.788 1.87 1.955 2.041 2.13 2.22 2.311 2.403 2.497 2.592 2.687 2.783 2.879 2.976 3.072 3.169 3.266 3.363 3.459 3.555 3.651 3.746 3.841 3.935 4.028 4.12 4.211 4.301 4.389 4.476 4.562 4.646 4.727 4.807 4.884 4.959 5.031 5.1 5.166 5.228 5.286 5.34 5.39 5.435 5.475 5.51 5.54 5.564 5.581 5.593 5.599 5.6 5.6 5.597 5.592 5.584 5.574 5.561 5.547 5.53 5.511 5.491 5.468 5.444 5.418 5.39 5.361 5.33 5.298 5.265 5.23 5.195 5.158 5.12 5.081 5.041 5.001 4.959 4.917 4.874 4.831 4.787 4.742 4.698 4.652 4.607 4.56 4.514 4.468 4.421 4.374 4.327 4.28 4.233 4.185 4.138 4.091 4.044 3.997 3.95 3.903 3.856 3.81 3.763 3.717 3.671 3.625 3.58 3.535 3.49 3.445 3.401 3.357 3.313 3.27 3.227 3.184 3.142 3.1 3.059 3.017 2.977 2.936 2.896 2.857 2.817 2.779 2.74 2.702 2.665 2.627 2.591 2.554 2.518 2.483 2.448 2.413 2.379 2.345 2.311 2.278 2.245 2.213 2.181 2.15 2.119 2.088 2.058

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.724" PeakHeight="110.0" Num="3" Error="0.0">
-24.855 6.37 -0.802
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.724" EndFrequency="5.6" PeakHeight="522.31" Num="5" zHalfNm="386.35" Error="3.263">
-331.854 -12.067 7.814 -4.48 1.814
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="73.537" Depth="0.338"/>
<TopsideChapman PeakHeight="522.31" PeakDensity="389081.88" PeakScaleHeight="101.207" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
