<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 15:30:00.000"
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="12.0">
<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: F2o cusp not found, Multiple candidates for F2x 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" >
2026.10.20 (293) 15:30:00</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">
FF202629310201530009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.324" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.264" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="435.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="435.000" 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="7.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="435.000" 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="3.373" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.353" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="402.498" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="239.998" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.077" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="210.224" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.612" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="116.927" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="250.070" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="39">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
435.000 440.000 445.000 450.000 455.000 460.000 465.000 470.000 475.000 480.000 487.500 495.000 502.500 510.000 517.500 525.000 530.000 540.000 545.000 550.000 555.000 560.000 565.197 570.811 576.895 583.509 590.727 598.635 607.336 616.958 627.652 639.611 653.072 668.337 685.794 705.953 729.494 757.345 790.809
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 1.171875 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 -2.734375 -0.390625 1.953125 -1.171875 -2.734375 0.390625 1.953125 0.390625 -0.390625 0.390625 -1.953125 0.390625 -2.734375 0.390625 0.390625 -0.390625 0.390625 0.390625 -1.953125 1.171875 0.390625 -1.953125 -1.953125 -0.390625 2.734375 -0.390625 2.734375 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" >
89.486 90.0 95.0 100.0 105.0 110.0 111.62 113.24 114.86 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 402.498 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.269 2.919 3.263 3.373 3.25 3.25 3.373 3.377 3.499 3.618 3.736 3.853 3.97 4.089 4.209 4.33 4.453 4.578 4.704 4.831 4.959 5.088 5.218 5.347 5.476 5.604 5.732 5.858 5.984 6.108 6.23 6.351 6.47 6.588 6.704 6.818 6.93 7.041 7.151 7.258 7.364 7.469 7.572 7.673 7.773 7.872 7.968 8.063 8.157 8.248 8.337 8.425 8.509 8.591 8.67 8.745 8.817 8.883 8.944 8.999 9.047 9.086 9.117 9.138 9.149 9.15 9.15 9.146 9.14 9.131 9.118 9.103 9.085 9.064 9.041 9.015 8.987 8.957 8.924 8.889 8.852 8.813 8.772 8.729 8.685 8.639 8.591 8.542 8.491 8.439 8.386 8.332 8.276 8.219 8.162 8.103 8.044 7.983 7.922 7.861 7.798 7.735 7.671 7.607 7.543 7.478 7.412 7.347 7.281 7.215 7.148 7.082 7.015 6.948 6.882 6.815 6.748 6.681 6.615 6.548 6.481 6.415 6.349 6.283 6.217 6.152 6.086 6.021 5.956 5.892 5.828 5.764 5.701 5.637 5.575 5.512 5.45 5.389 5.328 5.267 5.207 5.147 5.087 5.028 4.97 4.912 4.854 4.797 4.741 4.684 4.629 4.574 4.519 4.465 4.411 4.358 4.305 4.253 4.202 4.15 4.1 4.05 4.0 3.951 3.902 3.854 3.806 3.759 3.713 3.666 3.621 3.576 3.531 3.487 3.443 3.4 3.357 3.315 3.273 3.232 3.191 3.15 3.11 3.071 3.032 2.993

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.373" PeakHeight="110.0" Num="3" Error="0.0">
-30.488 13.133 -3.159
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.373" EndFrequency="9.15" PeakHeight="402.498" Num="5" zHalfNm="239.998" Error="4.629">
-266.601 -33.378 17.48 -7.222 2.083
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.86" Depth="0.123"/>
<TopsideChapman PeakHeight="402.498" PeakDensity="1038740.7" PeakScaleHeight="116.927" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
