condition mean min max 12pM Fe,Midday 19.2835 19.2835 19.2835 12pM Fe,Midnight 10.9698 9.9745 11.9651 58pM Fe,Midday 28.5339 28.5339 28.5339 58pM Fe,Midnight 7.26059 0.0 10.297 233pM Fe,Midnight 18.0341 16.0723 20.5872 1160pM Fe,Midday 12.148685714285714 10.1293 13.6662 1160pM Fe,Midnight 19.7121 16.4151 23.7613 High carbon,Dark 28.375191333333333 3.59567 58.8295 High carbon,Light 39.11493 3.07309 90.4894 Low carbon,Dark 13.9559 13.9559 13.9559 Phloroglucinol 5.29702 2.45878 7.94898 Silicon starvation,12h 30.6102 30.6102 30.6102