condition mean min max 12pM Fe,Midday 20.6989 20.6989 20.6989 12pM Fe,Midnight 31.1057 30.2008 32.0106 58pM Fe,Midday 17.632 17.632 17.632 58pM Fe,Midnight 30.871728571428573 24.8041 54.9119 233pM Fe,Midnight 29.0121 27.5775 29.7333 1160pM Fe,Midday 12.524542857142857 10.856 15.6722 1160pM Fe,Midnight 24.927058333333335 18.9287 33.5301 High carbon,Dark 22.69488 15.1564 37.9629 High carbon,Light 12.07914923076923 4.55046 18.2692 Low carbon,Dark 19.0766 19.0766 19.0766 Phloroglucinol 25.4576 21.4884 31.8368 Silicon starvation,12h 30.5852 30.5852 30.5852