condition mean min max 12pM Fe,Midday 28.8456 28.8456 28.8456 12pM Fe,Midnight 27.396 27.2891 27.5029 58pM Fe,Midday 24.6438 24.6438 24.6438 58pM Fe,Midnight 18.837585714285716 16.8378 21.1857 233pM Fe,Midnight 15.734033333333333 15.2975 16.4893 1160pM Fe,Midday 19.74897142857143 18.567 20.2761 1160pM Fe,Midnight 12.277166666666666 9.4658 13.5157 High carbon,Dark 13.643609333333334 4.50428 22.6688 High carbon,Light 11.042644615384615 2.50227 24.8215 Low carbon,Dark 9.69788 9.69788 9.69788 Phloroglucinol 19.782333333333334 17.3631 21.621 Silicon starvation,12h 13.4209 13.4209 13.4209