condition mean min max 12pM Fe,Midday 42.5219 42.5219 42.5219 12pM Fe,Midnight 37.45115 34.3773 40.525 58pM Fe,Midday 31.1111 31.1111 31.1111 58pM Fe,Midnight 38.82971428571428 27.4104 90.2445 233pM Fe,Midnight 35.1039 34.6997 35.651 1160pM Fe,Midday 30.644928571428572 27.8647 32.5703 1160pM Fe,Midnight 30.237241666666666 24.6626 37.1854 High carbon,Dark 28.305253333333333 18.6192 41.7004 High carbon,Light 28.71587076923077 9.25899 52.525 Low carbon,Dark 27.0198 27.0198 27.0198 Phloroglucinol 27.296966666666666 24.8159 28.9696 Silicon starvation,12h 40.3709 40.3709 40.3709