<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-01-30 -030 14:00:00.000"
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) 14:00:00</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">
FF202603001301400009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.439" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.119" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="545.000" 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="3.319" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.327" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="364.606" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="245.619" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.947" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="149.545" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.762" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="83.104" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="201.300" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.200" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="88">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
325.000 325.000 325.000 325.000 325.000 325.000 327.500 330.000 330.000 335.000 340.000 340.000 342.500 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 362.500 365.000 370.000 370.000 372.500 375.000 380.000 382.500 385.000 385.000 390.000 392.500 395.000 400.000 400.000 405.000 405.000 405.000 410.000 415.000 415.000 420.000 425.000 425.000 430.000 430.000 435.000 440.000 440.000 450.000 450.000 455.000 460.000 460.000 465.000 475.000 475.000 480.000 480.000 485.000 490.000 495.000 495.000 500.000 505.000 505.000 510.000 515.000 515.000 520.000 520.000 525.000 530.000 530.000 535.000 540.000 545.000 545.000 550.000 555.000 560.000 566.358 573.689 582.232 592.318 604.404 619.151
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 51 54 54 51 48 0 54 48 0 51 57 0 54 57 54 57 54 60 51 57 51 57 51 54 0 54 48 0 51 57 54 0 54 48 57 48 57 57 60 57 63 60 57 63 63 60 63 60 60 57 57 60 60 60 57 57 57 57 57 54 57 57 54 57 57 57 57 54 60 57 60 57 54 57 57 54 51 51 54 51 48 48 48 48 48 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 1.953125 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 -1.171875 -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 -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" >
89.494 90.0 95.0 100.0 105.0 110.0 111.843 113.686 115.0 115.529 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 364.606 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.233 2.872 3.211 3.319 3.196 3.196 3.284 3.319 3.494 3.665 3.824 3.977 4.127 4.276 4.424 4.573 4.722 4.873 5.023 5.175 5.327 5.479 5.632 5.784 5.936 6.087 6.238 6.387 6.536 6.684 6.831 6.977 7.122 7.265 7.408 7.55 7.691 7.832 7.972 8.111 8.249 8.388 8.525 8.663 8.801 8.938 9.076 9.213 9.35 9.486 9.622 9.755 9.886 10.01 10.123 10.216 10.28 10.3 10.3 10.296 10.285 10.267 10.243 10.212 10.176 10.134 10.087 10.035 9.978 9.917 9.851 9.781 9.708 9.631 9.551 9.469 9.383 9.295 9.204 9.111 9.016 8.92 8.822 8.722 8.622 8.52 8.417 8.314 8.209 8.104 7.999 7.894 7.788 7.682 7.576 7.471 7.365 7.26 7.155 7.051 6.947 6.843 6.74 6.638 6.536 6.436 6.336 6.236 6.138 6.041 5.944 5.849 5.754 5.661 5.568 5.477 5.386 5.297 5.209 5.122 5.036 4.951 4.867 4.784 4.702 4.622 4.543 4.464 4.387 4.311 4.236 4.162 4.09 4.018 3.948 3.878 3.81 3.743 3.676 3.611 3.547 3.484 3.422 3.361 3.3 3.241 3.183 3.126 3.07 3.014 2.96 2.907 2.854 2.802 2.752 2.702 2.653 2.605 2.557 2.511 2.465 2.42 2.376 2.332 2.29 2.248 2.207 2.166 2.127 2.088 2.049 2.012 1.975 1.938 1.903 1.868 1.833 1.8 1.766 1.734 1.702 1.671 1.64 1.609 1.58 1.551

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.319" PeakHeight="110.0" Num="3" Error="0.0">
-30.449 13.075 -3.132
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.319" EndFrequency="10.3" PeakHeight="364.606" Num="5" zHalfNm="245.619" Error="3.713">
-210.645 -61.41 28.924 -8.587 2.641
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.529" Depth="0.123"/>
<TopsideChapman PeakHeight="364.606" PeakDensity="1316253.1" PeakScaleHeight="83.104" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
