condition mean min max 12pM Fe,Midday 67.4409 67.4409 67.4409 12pM Fe,Midnight 27.733849999999997 27.1697 28.298 58pM Fe,Midday 40.2133 40.2133 40.2133 58pM Fe,Midnight 14.187542857142857 0.0 19.0652 233pM Fe,Midnight 13.038833333333333 12.3352 14.0861 1160pM Fe,Midday 37.267042857142854 30.1814 40.0493 1160pM Fe,Midnight 5.86845 2.99534 9.57393 High carbon,Dark 16.38456 4.99963 45.4468 High carbon,Light 16.509127692307693 2.30444 53.4222 Low carbon,Dark 8.29322 8.29322 8.29322 Phloroglucinol 26.622 22.9324 31.8821 Silicon starvation,12h 32.5641 32.5641 32.5641