condition mean min max 12pM Fe,Midday 19.4811 19.4811 19.4811 12pM Fe,Midnight 16.829 16.6104 17.0476 58pM Fe,Midday 15.9887 15.9887 15.9887 58pM Fe,Midnight 16.204657142857144 14.338 17.872 233pM Fe,Midnight 14.667766666666667 14.3427 15.0016 1160pM Fe,Midday 11.923985714285715 10.7833 14.9869 1160pM Fe,Midnight 24.051904999999998 5.6373 56.8062 High carbon,Dark 11.717162 1.59815 17.2983 High carbon,Light 6.4001518 0.0546354 12.2578 Low carbon,Dark 7.60271 7.60271 7.60271 Phloroglucinol 3.89191 3.15926 5.30351 Silicon starvation,12h 5.43881 5.43881 5.43881