condition mean min max 12pM Fe 39.767025000000004 33.06415 46.4699 58pM Fe 30.54652142857143 29.3438 31.749242857142857 233pM Fe 17.3016 17.3016 17.3016 1160pM Fe 16.78462994047619 6.557474166666667 27.011785714285715 Dark 14.680429 10.2971 19.063758 Light 16.757356153846153 16.757356153846153 16.757356153846153 Phloroglucinol 18.0488 18.0488 18.0488