condition mean min max 12pM Fe,Midday 35.9534 35.9534 35.9534 12pM Fe,Midnight 36.7896 35.3599 38.2193 58pM Fe,Midday 26.9189 26.9189 26.9189 58pM Fe,Midnight 37.847942857142854 29.7628 57.8323 233pM Fe,Midnight 35.31823333333333 33.6839 36.6078 1160pM Fe,Midday 41.477585714285716 37.5131 46.7519 1160pM Fe,Midnight 22.639866666666666 17.3059 28.1014 High carbon,Dark 28.116646666666668 10.5103 53.4343 High carbon,Light 25.523043846153847 1.9155 47.1716 Low carbon,Dark 24.3209 24.3209 24.3209 Phloroglucinol 36.160266666666665 35.4842 36.9089 Silicon starvation,12h 53.4087 53.4087 53.4087