condition mean min max 12pM Fe 53.525975 47.19555 59.8564 58pM Fe 52.45495714285714 37.5561 67.35381428571428 233pM Fe 26.787399999999998 26.787399999999998 26.787399999999998 1160pM Fe 32.686864880952385 30.090558333333334 35.28317142857143 Dark 30.42312666666667 25.9372 34.90905333333333 Light 33.33382230769231 33.33382230769231 33.33382230769231 Phloroglucinol 61.6699 61.6699 61.6699