condition mean min max 12pM Fe,Midday 0.0 0.0 0.0 12pM Fe,Midnight 0.056457 0.0 0.112914 58pM Fe,Midday 0.0 0.0 0.0 58pM Fe,Midnight 0.013681342857142858 0.0 0.0957694 233pM Fe,Midnight 0.0225385 0.0 0.0676155 1160pM Fe,Midday 0.0 0.0 0.0 1160pM Fe,Midnight 0.007778283333333334 0.0 0.0933394 High carbon,Dark 0.09665433333333333 0.0 0.390208 High carbon,Light 0.041113384615384614 0.0 0.216342 Low carbon,Dark 0.0 0.0 0.0 Phloroglucinol 0.12150953333333334 0.0 0.295885 Silicon starvation,12h 0.0 0.0 0.0