condition mean min max 12pM Fe,Midday 9.94506 9.94506 9.94506 12pM Fe,Midnight 6.55194 6.41947 6.68441 58pM Fe,Midday 6.22059 6.22059 6.22059 58pM Fe,Midnight 6.261211428571428 0.0 8.83215 233pM Fe,Midnight 5.93024 5.55278 6.48378 1160pM Fe,Midday 4.971665714285714 4.6316 6.19134 1160pM Fe,Midnight 3.8241883333333333 1.58577 8.38078 High carbon,Dark 11.040389333333334 1.35882 18.4039 High carbon,Light 8.556886153846154 2.88638 14.632 Low carbon,Dark 6.40842 6.40842 6.40842 Phloroglucinol 4.068413333333334 2.81852 5.84102 Silicon starvation,12h 11.512 11.512 11.512