<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 20:40:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, 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" >
2026.10.29 (302) 20:40:00</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">
FF202630210292040009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.476" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.155" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="500.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="500.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" 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="1.221" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="401.065" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="300.494" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.317" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="143.218" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="34.588" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.795" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="147.360" 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="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
500.000 510.000 515.000 525.000 525.000 530.000 540.000 546.785 554.363 562.885 572.536 583.558 596.265 611.075 628.558 649.509
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 60 0 0 60 63 60 57 0 60 60 63 63 63 57
</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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875
</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" >
90.087 95.0 100.0 105.0 110.0 115.0 120.0 123.664 125.0 130.0 135.0 137.327 140.0 145.0 150.0 150.991 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 401.065 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.814 1.058 1.182 1.221 1.2 1.135 1.055 1.055 1.055 1.055 1.055 1.087 1.148 1.209 1.221 1.31 1.421 1.534 1.65 1.772 1.9 2.035 2.177 2.327 2.485 2.65 2.824 3.005 3.193 3.387 3.587 3.792 4.001 4.213 4.427 4.644 4.862 5.08 5.299 5.517 5.734 5.951 6.166 6.38 6.591 6.799 7.005 7.207 7.405 7.598 7.787 7.969 8.144 8.312 8.472 8.622 8.761 8.888 9.002 9.102 9.186 9.254 9.304 9.336 9.35 9.35 9.348 9.337 9.32 9.295 9.263 9.225 9.18 9.13 9.074 9.014 8.948 8.878 8.804 8.726 8.644 8.56 8.472 8.381 8.288 8.193 8.096 7.997 7.896 7.794 7.691 7.587 7.482 7.377 7.27 7.164 7.057 6.951 6.844 6.737 6.631 6.525 6.42 6.315 6.21 6.107 6.004 5.901 5.8 5.7 5.6 5.502 5.404 5.308 5.213 5.118 5.025 4.934 4.843 4.754 4.665 4.578 4.493 4.408 4.325 4.243 4.162 4.083 4.005 3.928 3.852 3.777 3.704 3.632 3.561 3.492 3.423 3.356 3.29 3.225 3.162 3.099 3.038 2.977 2.918 2.86 2.803 2.747 2.692 2.638 2.585 2.533 2.482 2.432 2.383 2.335 2.288 2.241 2.196 2.152 2.108 2.065 2.023 1.982 1.942 1.902 1.864 1.826 1.788 1.752 1.716 1.681 1.647 1.613 1.58 1.548 1.516 1.485 1.455 1.425 1.396 1.367 1.339 1.311 1.284 1.258

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.221" PeakHeight="110.0" Num="3" Error="0.0">
-27.352 8.95 -1.511
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.221" EndFrequency="9.35" PeakHeight="401.065" Num="5" zHalfNm="300.494" Error="2.828">
-244.747 -9.334 6.037 -3.521 1.491
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.991" Depth="0.166"/>
<TopsideChapman PeakHeight="401.065" PeakDensity="1084646.4" PeakScaleHeight="74.795" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
