condition mean min max 12pM Fe,Midday 41.5538 41.5538 41.5538 12pM Fe,Midnight 45.33965 43.4263 47.253 58pM Fe,Midday 45.3595 45.3595 45.3595 58pM Fe,Midnight 28.8319 0.0 37.6939 233pM Fe,Midnight 35.27883333333333 33.442 37.4874 1160pM Fe,Midday 31.713628571428572 29.183 34.5404 1160pM Fe,Midnight 38.0658 32.6594 46.4318 High carbon,Dark 29.917113333333333 15.2837 59.8947 High carbon,Light 25.464915384615384 12.7573 44.1369 Low carbon,Dark 18.3007 18.3007 18.3007 Phloroglucinol 21.3935 18.1688 27.5169 Silicon starvation,12h 27.3991 27.3991 27.3991