condition mean min max 12pM Fe 27.895179999999996 5.49726 50.293099999999995 58pM Fe 18.559762142857146 4.69051 32.42901428571429 233pM Fe 77.2789 77.2789 77.2789 1160pM Fe 31.86783445238095 1.7599605714285715 61.97570833333333 Dark 57.92297 41.1549 74.69104 Light 38.41348461538462 38.41348461538462 38.41348461538462 Phloroglucinol 18.562 18.562 18.562