condition mean min max 12pM Fe,Midday 20.3218 20.3218 20.3218 12pM Fe,Midnight 17.96335 17.841 18.0857 58pM Fe,Midday 18.3274 18.3274 18.3274 58pM Fe,Midnight 10.958742857142857 0.0 14.5292 233pM Fe,Midnight 9.248843333333333 8.60014 9.89794 1160pM Fe,Midday 16.20284285714286 13.5711 17.714 1160pM Fe,Midnight 6.15739 3.85744 7.52971 High carbon,Dark 7.468031333333333 3.49549 13.7643 High carbon,Light 7.041840923076923 0.822322 13.4556 Low carbon,Dark 8.25553 8.25553 8.25553 Phloroglucinol 15.402266666666668 13.5913 17.1734 Silicon starvation,12h 27.1273 27.1273 27.1273