condition mean min max 12pM Fe,Midday 22.7529 22.7529 22.7529 12pM Fe,Midnight 18.3134 17.9003 18.7265 58pM Fe,Midday 11.2398 11.2398 11.2398 58pM Fe,Midnight 13.038214285714286 0.0 17.6667 233pM Fe,Midnight 9.73437 7.86621 10.9533 1160pM Fe,Midday 11.465985714285715 10.2999 12.5471 1160pM Fe,Midnight 9.54048 4.45285 13.1912 High carbon,Dark 17.40124 11.0619 28.6621 High carbon,Light 12.197456923076922 1.15049 29.6573 Low carbon,Dark 9.98034 9.98034 9.98034 Phloroglucinol 29.4802 13.8202 53.352 Silicon starvation,12h 20.9673 20.9673 20.9673