condition mean min max 12pM Fe,Midday 57.5651 57.5651 57.5651 12pM Fe,Midnight 44.1764 43.29 45.0628 58pM Fe,Midday 52.3852 52.3852 52.3852 58pM Fe,Midnight 45.448142857142855 31.5855 89.5563 233pM Fe,Midnight 33.18186666666667 32.0844 34.1227 1160pM Fe,Midday 35.401871428571425 32.4476 38.8472 1160pM Fe,Midnight 13.276529166666666 8.87995 19.2691 High carbon,Dark 28.01693 2.99465 48.6704 High carbon,Light 18.504272307692307 4.60695 38.47 Low carbon,Dark 22.106 22.106 22.106 Phloroglucinol 23.729666666666667 16.5757 29.6075 Silicon starvation,12h 28.6676 28.6676 28.6676