condition mean min max 12pM Fe,Midday 0.852906 0.852906 0.852906 12pM Fe,Midnight 0.874985 0.0 1.74997 58pM Fe,Midday 0.377346 0.377346 0.377346 58pM Fe,Midnight 0.4607497142857143 0.0 1.51492 233pM Fe,Midnight 0.266245 0.0 0.528714 1160pM Fe,Midday 0.1478447142857143 0.0 0.682316 1160pM Fe,Midnight 0.43801016666666664 0.0 1.65164 High carbon,Dark 3.2132259333333333 0.0 9.68908 High carbon,Light 2.252650076923077 0.0 6.58047 Low carbon,Dark 6.23673 6.23673 6.23673 Phloroglucinol 0.8265873333333333 0.539224 1.06891 Silicon starvation,12h 3.39694 3.39694 3.39694