condition mean min max 12pM Fe,Midday 0.61228 0.61228 0.61228 12pM Fe,Midnight 0.632439 0.628131 0.636747 58pM Fe,Midday 0.361183 0.361183 0.361183 58pM Fe,Midnight 0.27920085714285714 0.0 0.634677 233pM Fe,Midnight 0.16998366666666667 0.126517 0.254206 1160pM Fe,Midday 0.18953928571428572 0.0 0.516968 1160pM Fe,Midnight 0.24249291666666667 0.0 0.629171 High carbon,Dark 1.9449763333333332 0.0 5.16081 High carbon,Light 0.9396924615384615 0.0 2.42735 Low carbon,Dark 0.0 0.0 0.0 Phloroglucinol 1.6010616666666668 0.38367 4.03242 Silicon starvation,12h 0.812859 0.812859 0.812859