condition mean min max 12pM Fe,Midday 51.5032 51.5032 51.5032 12pM Fe,Midnight 46.4404 45.4983 47.3825 58pM Fe,Midday 42.7303 42.7303 42.7303 58pM Fe,Midnight 26.9063 0.0 34.4277 233pM Fe,Midnight 20.108166666666666 19.2933 20.6933 1160pM Fe,Midday 24.986057142857142 19.8587 28.9385 1160pM Fe,Midnight 34.73419166666667 16.0601 53.1802 High carbon,Dark 30.50416 11.0236 54.2342 High carbon,Light 24.551123846153846 6.39016 41.9961 Low carbon,Dark 28.9768 28.9768 28.9768 Phloroglucinol 54.28393333333334 41.9899 65.1225 Silicon starvation,12h 28.4215 28.4215 28.4215