condition mean min max 12pM Fe 64.867325 29.896449999999998 99.8382 58pM Fe 41.022535714285716 10.940871428571429 71.1042 233pM Fe 10.27261 10.27261 10.27261 1160pM Fe 25.960852916666667 4.084105833333333 47.8376 Dark 17.274676333333332 15.8277 18.721652666666667 Light 18.25917769230769 18.25917769230769 18.25917769230769 Phloroglucinol 28.8783 28.8783 28.8783