condition mean min max 12pM Fe,Midday 33.5375 33.5375 33.5375 12pM Fe,Midnight 29.5764 28.5188 30.634 58pM Fe,Midday 23.6953 23.6953 23.6953 58pM Fe,Midnight 24.598085714285713 18.7316 45.3313 233pM Fe,Midnight 17.4343 15.4065 18.9716 1160pM Fe,Midday 19.701814285714285 17.6484 22.0358 1160pM Fe,Midnight 14.335908333333332 12.4813 16.796 High carbon,Dark 15.813268666666666 4.24429 30.5148 High carbon,Light 11.127784615384616 4.65447 21.5975 Low carbon,Dark 11.1895 11.1895 11.1895 Phloroglucinol 14.107136666666666 9.74861 22.4147 Silicon starvation,12h 20.3878 20.3878 20.3878