condition mean min max 12pM Fe,Midday 5.86436 5.86436 5.86436 12pM Fe,Midnight 4.75942 4.727 4.79184 58pM Fe,Midday 4.26244 4.26244 4.26244 58pM Fe,Midnight 3.7359585714285717 0.0 4.8361 233pM Fe,Midnight 2.6583633333333334 2.12182 3.50546 1160pM Fe,Midday 4.042288571428571 1.76996 5.61081 1160pM Fe,Midnight 0.901084 0.17571 2.83483 High carbon,Dark 2.2449318 0.0 6.89705 High carbon,Light 1.776815 0.0 4.59055 Low carbon,Dark 4.08402 4.08402 4.08402 Phloroglucinol 3.6331366666666667 2.85385 4.50204 Silicon starvation,12h 1.66832 1.66832 1.66832