condition mean min max 12pM Fe,Midday 11.7798 11.7798 11.7798 12pM Fe,Midnight 7.90623 7.55452 8.25794 58pM Fe,Midday 6.60146 6.60146 6.60146 58pM Fe,Midnight 8.006437142857143 0.0 12.0308 233pM Fe,Midnight 5.15229 4.47525 6.11343 1160pM Fe,Midday 4.5162571428571425 3.347 5.42998 1160pM Fe,Midnight 3.5621308333333332 1.42058 7.38158 High carbon,Dark 4.48157 0.0 8.19948 High carbon,Light 2.492869153846154 0.363537 6.04064 Low carbon,Dark 2.23321 2.23321 2.23321 Phloroglucinol 1.793355 0.738155 2.40768 Silicon starvation,12h 7.70772 7.70772 7.70772