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                      Aerosol optical thicknesses at different wavelengths measured by Prede sky radiometer (POM-02)
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                                                Observation area (Lon., Lat.):             "HEFEI"(117.173E,31.897N)
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                                                Serial number of an instrument:                "PS1307901
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NOTATIONS:
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                                               (i)   Data analysis software (SKYRAD.pack)        : version4.2
                                               (ii)  Cloud screening software (CSSR)	       : version1.0
                                               (iii) Assumed refractive index for data analysis  : 1.50-0.005i
                                               (iii) Gobal irradiance data for cloud screening   : Applied (if Level is L1.50), Not applied (if Level is L1.30)
                                               (iv)  -9.99999                                    : Data not available
 
 
                                                Channel no.               Wavelength(um)
                                                -----------               --------------
                                                     1                         0.315
                                                     2                         0.340
                                                     3                         0.380
                                                     4                         0.400
                                                     5                         0.500
                                                     6                         0.675
                                                     7                         0.870
                                                     8                         0.940
                                                     9                         1.020
                                                    10                         1.627
                                                    11                         2.200
 
 
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 Level    Year   Month   Day   Hour(LT)      AOT(Ch. 1)  AOT(Ch. 2)  AOT(Ch. 3)  AOT(Ch. 4)  AOT(Ch. 5)  AOT(Ch. 6)  AOT(Ch. 7)  AOT(Ch. 8)  AOT(Ch. 9)  AOT(Ch.10)  AOT(Ch.11) 
                                                                                                                                                                                
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 L1.50    2011     2     12     9.830        -9.99990     0.94460     0.89960     0.87640     0.76190     0.59050     0.45260    -9.99990     0.37690    -9.99990    -9.99990   
 L1.50    2011     2     12    10.000        -9.99990     0.73490     0.67150     0.64260     0.52210     0.38120     0.28780    -9.99990     0.24210    -9.99990    -9.99990   
 L1.50    2011     2     12    10.170        -9.99990     0.66460     0.61250     0.58790     0.48060     0.34900     0.26050    -9.99990     0.21770    -9.99990    -9.99990   
 L1.50    2011     2     12    10.330        -9.99990     0.67770     0.62450     0.59980     0.49460     0.36640     0.27730    -9.99990     0.23190    -9.99990    -9.99990   
 L1.50    2011     2     12    10.500        -9.99990     0.68250     0.62670     0.60080     0.49150     0.36090     0.27200    -9.99990     0.22730    -9.99990    -9.99990   
 L1.50    2011     2     12    10.670        -9.99990     0.72410     0.66570     0.63870     0.52420     0.38510     0.28840    -9.99990     0.23900    -9.99990    -9.99990   
 L1.50    2011     2     12    11.170        -9.99990     1.57830     1.47380     1.42650     1.24170     1.04420     0.91860    -9.99990     0.85370    -9.99990    -9.99990   
 L1.50    2011     2     12    13.500        -9.99990     2.14210     2.01610     1.95820     1.72570     1.46460     1.28120    -9.99990     1.17590    -9.99990    -9.99990