condition mean min max 12pM Fe 39.18685 30.0818 48.2919 58pM Fe 49.652742857142854 46.51168571428572 52.7938 233pM Fe 76.35679999999999 76.35679999999999 76.35679999999999 1160pM Fe 73.10667142857142 14.304442857142858 131.9089 Dark 72.04449 34.6838 109.40518 Light 93.06309023076923 93.06309023076923 93.06309023076923 Phloroglucinol 28.34431 28.34431 28.34431