<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 17:10:00.000"
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) 17:10:00</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">
FF202629710241710009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.572" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.623" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="480.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="480.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="507.045" 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="3.152" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.248" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="333.351" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="220.430" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.867" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="148.510" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.675" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.268" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="171.920" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.580" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="18">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
480.000 485.000 490.000 495.000 500.000 505.000 510.000 500.000 503.275 507.045 511.432 516.603 522.785 530.310 539.668 551.620 567.420 589.281
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 57 57 57 0 57 57 42 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
</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" >
89.521 90.0 95.0 100.0 105.0 110.0 112.55 115.0 115.1 117.65 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 333.351 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.119 2.728 3.049 3.152 3.03 3.03 3.03 3.152 3.244 3.426 3.602 3.776 3.955 4.139 4.33 4.53 4.737 4.952 5.173 5.397 5.623 5.848 6.071 6.289 6.503 6.711 6.913 7.111 7.302 7.489 7.671 7.849 8.022 8.192 8.358 8.521 8.681 8.837 8.991 9.141 9.289 9.433 9.573 9.708 9.837 9.958 10.07 10.168 10.25 10.309 10.343 10.35 10.35 10.343 10.329 10.308 10.281 10.246 10.206 10.16 10.108 10.051 9.989 9.922 9.851 9.776 9.697 9.615 9.529 9.44 9.349 9.255 9.158 9.06 8.959 8.857 8.754 8.649 8.543 8.435 8.328 8.219 8.11 8.0 7.89 7.78 7.67 7.56 7.45 7.341 7.231 7.122 7.014 6.906 6.799 6.692 6.587 6.482 6.378 6.274 6.172 6.071 5.97 5.871 5.773 5.676 5.579 5.485 5.391 5.298 5.207 5.116 5.027 4.939 4.853 4.767 4.683 4.6 4.518 4.437 4.358 4.279 4.202 4.126 4.052 3.978 3.906 3.834 3.764 3.695 3.627 3.561 3.495 3.431 3.367 3.305 3.244 3.183 3.124 3.066 3.009 2.952 2.897 2.843 2.79 2.737 2.686 2.635 2.586 2.537 2.489 2.442 2.396 2.351 2.306 2.263 2.22 2.178 2.137 2.096 2.056 2.017 1.979 1.941 1.904 1.868 1.832 1.797 1.763 1.73 1.697 1.664 1.632 1.601 1.571 1.541 1.511 1.482 1.454 1.426 1.399 1.372 1.346 1.32 1.295 1.27

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.152" PeakHeight="110.0" Num="3" Error="0.0">
-30.319 12.885 -3.045
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.152" EndFrequency="10.35" PeakHeight="333.351" Num="5" zHalfNm="220.43" Error="5.863">
-199.919 -26.85 17.186 -9.126 3.008
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.65" Depth="0.122"/>
<TopsideChapman PeakHeight="333.351" PeakDensity="1329063.2" PeakScaleHeight="80.268" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
