condition mean min max 12pM Fe,Midday 13.0273 13.0273 13.0273 12pM Fe,Midnight 13.079550000000001 11.3085 14.8506 58pM Fe,Midday 10.1971 10.1971 10.1971 58pM Fe,Midnight 8.560277142857142 0.0 10.9952 233pM Fe,Midnight 12.1697 11.8028 12.8488 1160pM Fe,Midday 7.832425714285715 6.00699 9.57296 1160pM Fe,Midnight 5.64343 3.07249 9.90373 High carbon,Dark 9.612516 1.98533 16.1854 High carbon,Light 6.027297692307692 2.50468 9.72593 Low carbon,Dark 10.1773 10.1773 10.1773 Phloroglucinol 10.72168 7.84927 14.3374 Silicon starvation,12h 24.6596 24.6596 24.6596