condition mean min max 12pM Fe,Midday 13.8729 13.8729 13.8729 12pM Fe,Midnight 28.37455 27.8947 28.8544 58pM Fe,Midday 8.59275 8.59275 8.59275 58pM Fe,Midnight 22.02187142857143 0.0 30.5546 233pM Fe,Midnight 45.6836 44.5803 46.2666 1160pM Fe,Midday 5.9340785714285715 3.74826 8.65655 1160pM Fe,Midnight 17.166180833333332 5.34584 37.1912 High carbon,Dark 27.818527333333336 9.20481 42.7851 High carbon,Light 18.943507692307694 6.16506 50.862 Low carbon,Dark 28.8549 28.8549 28.8549 Phloroglucinol 8.15878 3.85911 12.098 Silicon starvation,12h 44.6757 44.6757 44.6757