condition mean min max 12pM Fe,Midday 18.5306 18.5306 18.5306 12pM Fe,Midnight 34.10015 32.0399 36.1604 58pM Fe,Midday 22.108 22.108 22.108 58pM Fe,Midnight 24.919385714285713 0.0 33.6535 233pM Fe,Midnight 28.132466666666666 25.5555 29.9263 1160pM Fe,Midday 7.898954285714286 6.50453 10.0774 1160pM Fe,Midnight 16.2033 10.1935 23.1715 High carbon,Dark 20.373346666666666 5.93997 35.1966 High carbon,Light 8.225253846153846 4.41273 19.4988 Low carbon,Dark 19.6233 19.6233 19.6233 Phloroglucinol 3.3863566666666665 2.36941 4.39745 Silicon starvation,12h 20.2575 20.2575 20.2575