condition mean min max 12pM Fe 35.986875 32.25505 39.7187 58pM Fe 67.18425 20.0829 114.2856 233pM Fe 13.3987 13.3987 13.3987 1160pM Fe 14.047834226190476 3.1248541666666667 24.970814285714287 Dark 9.590060999999999 9.22021 9.959912 Light 9.782183076923078 9.782183076923078 9.782183076923078 Phloroglucinol 3.66953 3.66953 3.66953