condition mean min max 12pM Fe 53.507525 39.635450000000006 67.3796 58pM Fe 34.92727857142857 29.855957142857143 39.9986 233pM Fe 27.531299999999998 27.531299999999998 27.531299999999998 1160pM Fe 35.159550238095235 32.79334333333333 37.525757142857145 Dark 51.148723333333336 42.2712 60.026246666666665 Light 50.13926153846154 50.13926153846154 50.13926153846154 Phloroglucinol 47.7598 47.7598 47.7598