condition mean min max 12pM Fe 58.671025 57.513850000000005 59.8282 58pM Fe 53.711621428571426 32.59804285714286 74.8252 233pM Fe 29.1945 29.1945 29.1945 1160pM Fe 31.971229166666667 20.514258333333334 43.4282 Dark 31.14482 28.62384 33.6658 Light 27.719553846153847 27.719553846153847 27.719553846153847 Phloroglucinol 49.4882 49.4882 49.4882