condition mean min max 12pM Fe,Midday 15.5067 15.5067 15.5067 12pM Fe,Midnight 20.0872 18.6083 21.5661 58pM Fe,Midday 17.0503 17.0503 17.0503 58pM Fe,Midnight 14.251257142857142 0.0 20.0422 233pM Fe,Midnight 15.762233333333333 13.6804 17.5309 1160pM Fe,Midday 13.70582857142857 11.1805 18.3281 1160pM Fe,Midnight 7.61928 4.0938 10.6455 High carbon,Dark 14.551066666666667 7.7685 19.6295 High carbon,Light 7.778297692307692 0.0 17.9593 Low carbon,Dark 9.98388 9.98388 9.98388 Phloroglucinol 15.5058 13.6493 17.7178 Silicon starvation,12h 18.6028 18.6028 18.6028