condition mean min max 12pM Fe 22.563925 17.560850000000002 27.567 58pM Fe 39.2817 35.3323 43.2311 233pM Fe 37.214800000000004 37.214800000000004 37.214800000000004 1160pM Fe 50.36230714285715 21.225814285714286 79.4988 Dark 26.201 11.9454 40.4566 Light 15.067214615384614 15.067214615384614 15.067214615384614 Phloroglucinol 1.8694703333333333 1.8694703333333333 1.8694703333333333