condition mean min max 12pM Fe,Midday 0.390803 0.390803 0.390803 12pM Fe,Midnight 2.01835 2.0046 2.0321 58pM Fe,Midday 0.345801 0.345801 0.345801 58pM Fe,Midnight 0.6127781428571428 0.0 1.12877 233pM Fe,Midnight 0.9358333333333333 0.730141 1.21129 1160pM Fe,Midday 0.13140785714285713 0.0 0.484682 1160pM Fe,Midnight 0.2565693333333333 0.0 0.785474 High carbon,Dark 2.0840421333333334 0.0 10.1827 High carbon,Light 0.5796753846153846 0.0 1.64464 Low carbon,Dark 0.0 0.0 0.0 Phloroglucinol 32.72826666666667 25.5604 43.2379 Silicon starvation,12h 0.0 0.0 0.0