month_year  Day  Collection_Time  Salinity  Temperature  Raw_SW_RFU_1  Raw_SW_RFU_2  Raw_SW_RFU_3  Raw_SW_RFU_4  Mean_Raw_SW_RFU  Chl        
march_2018  1    6:45             34        14.8         24.9          24.99         26.2          nd            25.36            5.88       
march_2018  2    0                nd        nd           0             0             0             nd            0.00             0.00       
march_2018  3    8:33             34        15           32.27         26.36         30.53         nd            29.72            6.90       
march_2018  4    8:30             34        15           26.12         25.09         25.55         nd            25.59            5.94       
march_2018  5    7:15             34        15.1         17.44         18.93         19.32         nd            18.56            4.31       
march_2018  6    8:30             34        15.4         11.67         11.41         12.3          nd            11.79            2.74       
march_2018  7    8:10             34        15.4         18.63         17.05         16.85         nd            17.51            4.06       
march_2018  8    6:45             34        15.3         19.89         21.89         22.26         nd            21.35            4.95       
march_2018  9    7:30             34        16.3         24.9          22.68         22.16         nd            23.25            5.39       
march_2018  10   7:10             34        16.3         26.73         28.36         27.74         nd            27.61            6.41       
march_2018  11   6:20             34        16.8         16.07         15.91         21.04         nd            17.67            4.10       
march_2018  12   6:05             34        16.5         24.76         29.88         27.35         nd            27.33            6.34       
march_2018  13   7:00             34        16.8         29.66         33.73         27.24         nd            30.21            7.01       
march_2018  14   5:00             34        17.4         44.45         41.2          42.31         nd            42.65            9.90