<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-01-30 -030 14:20:00.000"
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="18.0">
<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: 80% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o 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" >
2026.01.30 (030) 14:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.12" 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">
FF202603001301420009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.432" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.050" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="8.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="440.000" 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="3.345" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.339" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="370.003" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="251.324" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.046" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="151.718" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.682" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.964" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="196.730" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.300" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="99">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 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 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 9.2 9.25 9.3 9.35 9.4 9.45 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 305.000 310.000 314.375 318.750 323.125 327.500 331.875 336.250 340.625 345.000 345.000 350.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 361.000 362.000 363.000 364.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 375.000 375.000 385.000 385.000 385.000 385.000 390.000 395.000 390.000 395.000 400.000 400.000 405.000 405.000 405.000 410.000 415.000 415.000 415.000 420.000 425.000 425.000 430.000 435.000 440.000 440.000 440.000 450.000 455.000 460.000 465.000 465.000 470.000 475.000 480.000 485.000 490.000 495.000 500.000 505.000 505.000 510.000 515.000 520.000 520.000 525.000 530.000 535.000 540.000 545.000 550.000 555.000 560.000 566.264 573.162 580.794 589.286 598.790 609.499 621.658 635.582
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 45 0 48 0 0 0 0 0 54 51 57 51 57 60 60 60 57 60 57 57 0 0 0 0 57 57 51 0 57 60 63 60 60 60 60 57 54 48 48 54 60 63 0 45 63 0 51 60 48 60 66 60 48 60 63 63 57 63 63 57 51 60 60 57 54 54 51 60 60 60 60 60 60 60 57 54 60 60 57 57 57 60 57 54 51 54 54 54 54 51 51 48 48 51 48 45 42
</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 -1.171875 -1.953125 1.171875 -2.734375 2.734375 -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 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 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 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 -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" >
89.49 90.0 95.0 100.0 105.0 110.0 111.738 113.477 115.0 115.215 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 370.003 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.25 2.895 3.236 3.345 3.222 3.222 3.33 3.345 3.511 3.661 3.8 3.933 4.064 4.193 4.322 4.452 4.584 4.717 4.852 4.99 5.13 5.272 5.416 5.562 5.711 5.861 6.012 6.165 6.318 6.472 6.626 6.781 6.935 7.089 7.243 7.396 7.548 7.699 7.85 8.0 8.149 8.297 8.444 8.591 8.736 8.88 9.024 9.165 9.305 9.444 9.579 9.711 9.837 9.957 10.066 10.16 10.235 10.283 10.3 10.3 10.297 10.286 10.27 10.247 10.218 10.184 10.144 10.099 10.05 9.995 9.937 9.874 9.807 9.737 9.663 9.586 9.506 9.424 9.339 9.251 9.161 9.07 8.976 8.881 8.785 8.687 8.588 8.488 8.388 8.286 8.184 8.081 7.978 7.875 7.772 7.668 7.565 7.461 7.358 7.255 7.153 7.05 6.949 6.847 6.747 6.647 6.547 6.449 6.351 6.254 6.157 6.062 5.967 5.874 5.781 5.689 5.598 5.509 5.42 5.332 5.245 5.16 5.075 4.991 4.909 4.827 4.747 4.668 4.589 4.512 4.436 4.361 4.287 4.214 4.142 4.071 4.001 3.933 3.865 3.798 3.733 3.668 3.604 3.542 3.48 3.419 3.36 3.301 3.243 3.186 3.13 3.075 3.021 2.968 2.915 2.864 2.813 2.763 2.714 2.666 2.618 2.572 2.526 2.481 2.437 2.393 2.351 2.309 2.267 2.227 2.187 2.148 2.109 2.071 2.034 1.997 1.962 1.926 1.892 1.858 1.824 1.791 1.759 1.727 1.696 1.666

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.345" PeakHeight="110.0" Num="3" Error="0.0">
-30.468 13.103 -3.145
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.345" EndFrequency="10.3" PeakHeight="370.003" Num="5" zHalfNm="251.324" Error="6.172">
-215.629 -56.131 20.108 -5.945 2.809
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.215" Depth="0.123"/>
<TopsideChapman PeakHeight="370.003" PeakDensity="1316253.1" PeakScaleHeight="84.964" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
