condition mean min max 12pM Fe,Midday 0.967849 0.967849 0.967849 12pM Fe,Midnight 18.416385 7.04567 29.7871 58pM Fe,Midday 2.56919 2.56919 2.56919 58pM Fe,Midnight 22.134842857142857 0.0 30.2243 233pM Fe,Midnight 61.8881 56.3796 65.9963 1160pM Fe,Midday 0.0 0.0 0.0 1160pM Fe,Midnight 50.021325 32.9709 78.7612 High carbon,Dark 51.386786666666666 19.9508 101.295 High carbon,Light 20.45097 0.0 56.6754 Low carbon,Dark 48.7543 48.7543 48.7543 Phloroglucinol 16.417403333333333 7.95461 25.4721 Silicon starvation,12h 53.4156 53.4156 53.4156