condition mean min max 12pM Fe 18.128025 17.35835 18.8977 58pM Fe 10.597392142857142 8.36076 12.834024285714285 233pM Fe 11.79375 11.79375 11.79375 1160pM Fe 7.993498928571428 6.332422857142857 9.654575 Dark 3.666558 1.706 5.627116 Light 2.9722053846153846 2.9722053846153846 2.9722053846153846 Phloroglucinol 88.2773 88.2773 88.2773