condition mean min max 12pM Fe 2.5507875 2.109845 2.99173 58pM Fe 1.2207843571428572 0.9976287142857143 1.44394 233pM Fe 0.22626000000000002 0.22626000000000002 0.22626000000000002 1160pM Fe 0.8317633154761904 0.5034759166666667 1.1600507142857142 Dark 0.9299525666666666 0.883899 0.9760061333333333 Light 0.576439923076923 0.576439923076923 0.576439923076923 Phloroglucinol 6.18042 6.18042 6.18042