condition mean min max 12pM Fe,Midday 18.2594 18.2594 18.2594 12pM Fe,Midnight 17.00545 13.978 20.0329 58pM Fe,Midday 19.2983 19.2983 19.2983 58pM Fe,Midnight 9.68827857142857 0.0 13.2706 233pM Fe,Midnight 9.19515 8.17477 10.7396 1160pM Fe,Midday 19.030057142857142 13.5612 25.3715 1160pM Fe,Midnight 4.616524166666666 2.91647 6.00105 High carbon,Dark 5.0226188 0.453662 11.135 High carbon,Light 5.065424692307692 0.0 14.0416 Low carbon,Dark 5.35722 5.35722 5.35722 Phloroglucinol 7.663356666666666 6.03872 8.65794 Silicon starvation,12h 13.1305 13.1305 13.1305