condition mean min max 12pM Fe,Midday 0.0 0.0 0.0 12pM Fe,Midnight 0.0 0.0 0.0 58pM Fe,Midday 0.109455 0.109455 0.109455 58pM Fe,Midnight 0.04317028571428572 0.0 0.192336 233pM Fe,Midnight 0.07668066666666666 0.0 0.230042 1160pM Fe,Midday 0.14897885714285714 0.0 0.31333 1160pM Fe,Midnight 0.03847744166666667 0.0 0.183215 High carbon,Dark 0.46826813333333334 0.0 1.78738 High carbon,Light 0.4107603846153846 0.0 1.47119 Low carbon,Dark 0.0 0.0 0.0 Phloroglucinol 0.3067587 0.0 0.842763 Silicon starvation,12h 0.281524 0.281524 0.281524