condition mean min max 12pM Fe 34.2374 26.2238 42.251000000000005 58pM Fe 27.732535714285714 23.204 32.26107142857143 233pM Fe 21.1155 21.1155 21.1155 1160pM Fe 18.679459404761904 16.289161666666665 21.069757142857142 Dark 57.639823 44.013746 71.2659 Light 34.01032307692308 34.01032307692308 34.01032307692308 Phloroglucinol 3.80862 3.80862 3.80862