condition mean min max 12pM Fe 26.2549 23.518500000000003 28.9913 58pM Fe 24.050492857142856 20.894285714285715 27.2067 233pM Fe 19.7732 19.7732 19.7732 1160pM Fe 23.795209523809525 19.338785714285713 28.251633333333334 Dark 17.804491 16.6731 18.935882 Light 17.215535923076924 17.215535923076924 17.215535923076924 Phloroglucinol 25.9817 25.9817 25.9817