condition mean min max 12pM Fe,Midday 33.3706 33.3706 33.3706 12pM Fe,Midnight 31.10975 30.7116 31.5079 58pM Fe,Midday 24.8243 24.8243 24.8243 58pM Fe,Midnight 21.428185714285714 0.0 28.2655 233pM Fe,Midnight 23.8875 23.2492 25.0563 1160pM Fe,Midday 20.489371428571427 17.8244 23.2231 1160pM Fe,Midnight 13.871036666666667 8.67134 22.0526 High carbon,Dark 20.996423333333333 4.68055 35.0239 High carbon,Light 16.012533846153847 7.20054 27.6911 Low carbon,Dark 13.4365 13.4365 13.4365 Phloroglucinol 15.3663 14.4341 17.1019 Silicon starvation,12h 29.9085 29.9085 29.9085