condition mean min max 12pM Fe 77.621575 74.23585 81.0073 58pM Fe 59.620535714285715 58.35147142857143 60.8896 233pM Fe 38.0448 38.0448 38.0448 1160pM Fe 55.74691726190476 51.13684285714286 60.356991666666666 Dark 37.18861 32.2385 42.13872 Light 36.168143846153846 36.168143846153846 36.168143846153846 Phloroglucinol 89.774 89.774 89.774