condition mean min max 12pM Fe 17.0595 14.1254 19.9936 58pM Fe 15.769687857142857 14.892 16.647375714285715 233pM Fe 9.99306 9.99306 9.99306 1160pM Fe 12.769155952380952 9.523278571428571 16.015033333333335 Dark 10.622705 6.99129 14.25412 Light 13.06106076923077 13.06106076923077 13.06106076923077 Phloroglucinol 8.15138 8.15138 8.15138