condition mean min max 12pM Fe 22.36855775 1.0367155000000001 43.7004 58pM Fe 11.821702142857141 0.22970428571428572 23.4137 233pM Fe 0.083227 0.083227 0.083227 1160pM Fe 15.242869845238095 0.08049683333333334 30.405242857142856 Dark 2.5926144666666664 2.5792989333333334 2.60593 Light 4.416299307692308 4.416299307692308 4.416299307692308 Phloroglucinol 5.84939 5.84939 5.84939