<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 16:30:00.000"
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: Multiple candidates for F2x cusp, F2 cusps do not match</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) 16:30:00</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">
FF202629310201630009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="8.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.559" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.858" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="440.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="440.000" 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="7.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="490.000" 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="3.272" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.305" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="327.180" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="201.724" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.573" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="155.337" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="30.718" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="87.079" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="198.840" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="21">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
7.15 7.2 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
440.000 445.000 450.000 455.000 460.000 465.000 470.000 475.000 485.000 490.000 490.000 500.000 505.000 515.000 525.000 530.000 540.701 552.256 564.770 578.368 593.198
</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
</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 1.953125 1.953125 -1.171875
</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" >
89.502 90.0 95.0 100.0 105.0 110.0 112.04 114.079 115.0 116.119 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 327.18 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.201 2.832 3.165 3.272 3.15 3.15 3.205 3.272 3.383 3.521 3.66 3.799 3.942 4.088 4.237 4.39 4.544 4.699 4.853 5.006 5.156 5.302 5.444 5.583 5.717 5.848 5.975 6.098 6.218 6.335 6.45 6.562 6.671 6.779 6.884 6.988 7.091 7.191 7.291 7.389 7.486 7.581 7.674 7.765 7.852 7.935 8.01 8.075 8.122 8.147 8.15 8.149 8.144 8.133 8.118 8.098 8.074 8.046 8.014 7.978 7.938 7.895 7.849 7.799 7.747 7.692 7.635 7.575 7.513 7.449 7.383 7.315 7.246 7.175 7.103 7.03 6.956 6.88 6.804 6.727 6.649 6.571 6.492 6.413 6.333 6.254 6.174 6.094 6.014 5.934 5.855 5.775 5.696 5.617 5.538 5.46 5.382 5.304 5.227 5.151 5.075 4.999 4.924 4.85 4.777 4.704 4.632 4.56 4.49 4.42 4.35 4.282 4.214 4.147 4.081 4.016 3.951 3.887 3.825 3.762 3.701 3.64 3.581 3.522 3.464 3.406 3.35 3.294 3.239 3.185 3.132 3.079 3.027 2.976 2.926 2.877 2.828 2.78 2.733 2.686 2.64 2.595 2.551 2.507 2.464 2.422 2.38 2.339 2.299 2.259 2.22 2.181 2.144 2.107 2.07 2.034 1.999 1.964 1.93 1.896 1.863 1.831 1.799 1.767 1.736 1.706 1.676 1.647 1.618 1.59 1.562 1.534 1.507 1.481 1.455 1.429 1.404 1.379 1.355 1.331 1.308 1.285 1.262 1.24 1.218 1.197

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.272" PeakHeight="110.0" Num="3" Error="0.0">
-30.413 13.023 -3.108
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.272" EndFrequency="8.15" PeakHeight="327.18" Num="5" zHalfNm="201.724" Error="3.464">
-187.959 -37.946 22.183 -9.74 2.401
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.119" Depth="0.122"/>
<TopsideChapman PeakHeight="327.18" PeakDensity="824100.5" PeakScaleHeight="87.079" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
