condition mean min max 12pM Fe 31.7698 26.6678 36.8718 58pM Fe 21.675714285714285 15.712928571428572 27.6385 233pM Fe 15.8516 15.8516 15.8516 1160pM Fe 17.811816785714285 12.582105 23.04152857142857 Dark 18.615576666666666 17.5548 19.67635333333333 Light 22.111886153846154 22.111886153846154 22.111886153846154 Phloroglucinol 33.6019 33.6019 33.6019