<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-08 -039 15:00:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: 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" >
2026.02.08 (039) 15:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" 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">
FF202603902081500009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.331" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.240" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.600" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="540.000" 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="3.382" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.356" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="393.623" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.233" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.491" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="169.250" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.976" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="94.235" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="221.520" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.270" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="97">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.35 10.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 330.000 331.667 333.333 335.000 340.000 340.000 345.000 345.000 347.500 350.000 350.000 352.500 355.000 357.500 360.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 387.222 389.444 391.667 393.889 396.111 398.333 400.556 402.778 405.000 410.000 410.000 415.000 420.000 420.000 425.000 425.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 460.000 465.000 465.000 470.000 470.000 480.000 480.000 485.000 490.000 495.000 495.000 505.000 510.000 510.000 515.000 520.000 520.000 520.000 525.000 525.000 530.000 535.000 540.000 540.000 540.000 550.000 550.000 555.000 560.000 565.000 570.000 575.000 585.000 590.000 595.000 601.264 608.162 615.794 624.286 633.790 644.499 656.658 670.582 686.687
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 51 48 0 0 51 48 54 51 54 0 51 48 0 51 0 51 48 54 51 51 51 51 54 48 54 48 48 0 48 0 51 0 48 0 0 54 51 54 54 48 57 51 57 54 45 57 54 57 57 60 60 60 60 54 57 57 57 54 54 54 57 57 54 51 45 54 51 45 54 57 57 57 57 51 42 54 54 48 54 54 54 54 51 51 45 51 51 48 51 48 48 48 48 45 42 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 0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 -2.734375 0.390625 -0.390625 -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 -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" >
89.485 90.0 95.0 100.0 105.0 110.0 111.584 113.169 114.753 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 393.623 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.275 2.927 3.272 3.382 3.259 3.259 3.382 3.391 3.551 3.694 3.828 3.959 4.087 4.215 4.342 4.47 4.599 4.73 4.862 4.995 5.13 5.266 5.403 5.542 5.681 5.821 5.961 6.101 6.242 6.382 6.522 6.661 6.8 6.938 7.076 7.212 7.348 7.482 7.616 7.749 7.882 8.013 8.144 8.274 8.403 8.532 8.66 8.787 8.914 9.041 9.166 9.291 9.415 9.539 9.66 9.779 9.896 10.008 10.114 10.21 10.292 10.355 10.392 10.4 10.4 10.395 10.386 10.37 10.35 10.325 10.295 10.261 10.222 10.18 10.133 10.083 10.029 9.972 9.911 9.848 9.781 9.713 9.641 9.567 9.491 9.413 9.333 9.252 9.168 9.084 8.997 8.91 8.822 8.732 8.642 8.551 8.459 8.366 8.273 8.18 8.086 7.992 7.898 7.804 7.71 7.616 7.522 7.428 7.334 7.241 7.147 7.055 6.962 6.87 6.779 6.688 6.598 6.508 6.419 6.33 6.242 6.155 6.069 5.983 5.898 5.814 5.731 5.648 5.566 5.485 5.405 5.326 5.248 5.17 5.093 5.018 4.943 4.869 4.795 4.723 4.652 4.581 4.512 4.443 4.375 4.308 4.242 4.176 4.112 4.048 3.986 3.924 3.863 3.802 3.743 3.685 3.627 3.57 3.514 3.458 3.404 3.35 3.297 3.245 3.194 3.143 3.093 3.044 2.995 2.948 2.901 2.854 2.809 2.764 2.719 2.676 2.633 2.591 2.549 2.508 2.468 2.428 2.389 2.35 2.312 2.275

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.382" PeakHeight="110.0" Num="3" Error="0.0">
-30.494 13.142 -3.163
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.382" EndFrequency="10.4" PeakHeight="393.623" Num="5" zHalfNm="260.233" Error="4.392">
-237.279 -62.98 26.953 -8.588 3.024
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.753" Depth="0.123"/>
<TopsideChapman PeakHeight="393.623" PeakDensity="1341935.5" PeakScaleHeight="94.235" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
