condition mean min max 12pM Fe,Midday 49.7434 49.7434 49.7434 12pM Fe,Midnight 33.03905 31.5907 34.4874 58pM Fe,Midday 29.5531 29.5531 29.5531 58pM Fe,Midnight 23.48035714285714 0.0 30.2012 233pM Fe,Midnight 21.29573333333333 19.0297 24.4472 1160pM Fe,Midday 30.772042857142857 28.4998 33.6514 1160pM Fe,Midnight 15.461408333333333 12.0111 19.6397 High carbon,Dark 31.2326 18.2061 51.9291 High carbon,Light 23.132707692307694 5.85692 56.1336 Low carbon,Dark 17.7059 17.7059 17.7059 Phloroglucinol 20.6938 17.218 26.1439 Silicon starvation,12h 38.8147 38.8147 38.8147