condition mean min max 12pM Fe 13.4675 9.169599999999999 17.7654 58pM Fe 11.126640714285713 6.254581428571429 15.9987 233pM Fe 6.48186 6.48186 6.48186 1160pM Fe 7.211973869047618 4.5560591666666665 9.867888571428571 Dark 6.551389333333333 4.78288 8.319898666666667 Light 8.905713076923076 8.905713076923076 8.905713076923076 Phloroglucinol 16.8444 16.8444 16.8444