condition mean min max 12pM Fe,Midday 38.1538 38.1538 38.1538 12pM Fe,Midnight 40.261849999999995 39.3686 41.1551 58pM Fe,Midday 33.4502 33.4502 33.4502 58pM Fe,Midnight 32.35998571428571 27.4963 52.4434 233pM Fe,Midnight 17.841066666666666 17.5814 18.0304 1160pM Fe,Midday 18.159314285714284 17.3045 18.8325 1160pM Fe,Midnight 18.449491666666667 14.5861 20.6224 High carbon,Dark 14.400249333333333 3.97491 21.5254 High carbon,Light 10.202831230769231 0.374693 17.6739 Low carbon,Dark 7.82098 7.82098 7.82098 Phloroglucinol 17.977333333333334 14.3056 20.2149 Silicon starvation,12h 6.42122 6.42122 6.42122