condition mean min max 12pM Fe,Midday 28.3882 28.3882 28.3882 12pM Fe,Midnight 20.2447 20.0834 20.406 58pM Fe,Midday 23.0687 23.0687 23.0687 58pM Fe,Midnight 19.331028571428572 0.0 24.7725 233pM Fe,Midnight 13.769 11.9065 14.7956 1160pM Fe,Midday 17.7088 13.9715 20.438 1160pM Fe,Midnight 15.989083333333333 11.1044 20.2414 High carbon,Dark 26.576135333333333 5.20333 42.9029 High carbon,Light 26.658723076923078 10.6869 42.2926 Low carbon,Dark 17.8871 17.8871 17.8871 Phloroglucinol 25.193433333333335 23.0755 28.5589 Silicon starvation,12h 35.051 35.051 35.051