condition mean min max 12pM Fe 63.936775 61.3717 66.50185 58pM Fe 78.00382142857143 62.208842857142855 93.7988 233pM Fe 32.3475 32.3475 32.3475 1160pM Fe 37.70075892857143 26.303675 49.09784285714286 Dark 30.478798666666666 25.51749733333333 35.4401 Light 17.36160923076923 17.36160923076923 17.36160923076923 Phloroglucinol 13.04118 13.04118 13.04118