condition mean min max 12pM Fe,Midday 2.21788 2.21788 2.21788 12pM Fe,Midnight 6.2204 5.85077 6.59003 58pM Fe,Midday 1.12142 1.12142 1.12142 58pM Fe,Midnight 3.341862857142857 0.0 5.49086 233pM Fe,Midnight 4.817223333333334 4.21295 5.52492 1160pM Fe,Midday 1.2375091428571428 0.785904 2.02775 1160pM Fe,Midnight 2.760374166666667 1.19125 4.75363 High carbon,Dark 4.849738133333333 0.502172 11.6364 High carbon,Light 1.636888076923077 0.0 5.57054 Low carbon,Dark 1.54456 1.54456 1.54456 Phloroglucinol 3.81384 2.77957 5.20813 Silicon starvation,12h 1.80272 1.80272 1.80272