condition mean min max 12pM Fe 21.015825 18.3475 23.68415 58pM Fe 19.987864285714284 13.7371 26.23862857142857 233pM Fe 25.0685 25.0685 25.0685 1160pM Fe 11.663225178571428 10.7367975 12.589652857142857 Dark 68.199336 19.1115 117.287172 Light 89.04399692307692 89.04399692307692 89.04399692307692 Phloroglucinol 66.0018 66.0018 66.0018