condition mean min max 12pM Fe,Midday 15.6095 15.6095 15.6095 12pM Fe,Midnight 19.2572 19.1964 19.318 58pM Fe,Midday 14.2505 14.2505 14.2505 58pM Fe,Midnight 16.698842857142857 0.0 21.5588 233pM Fe,Midnight 22.022033333333333 19.9822 23.8066 1160pM Fe,Midday 10.362542857142857 8.14613 12.4474 1160pM Fe,Midnight 23.864241666666665 14.404 33.2983 High carbon,Dark 18.58214 5.30143 27.0209 High carbon,Light 13.49507223076923 0.503438 28.3151 Low carbon,Dark 12.2798 12.2798 12.2798 Phloroglucinol 18.718 15.8211 22.7887 Silicon starvation,12h 28.688 28.688 28.688