condition mean min max 12pM Fe,Midday 5.60585 5.60585 5.60585 12pM Fe,Midnight 4.57257 4.18253 4.96261 58pM Fe,Midday 3.89446 3.89446 3.89446 58pM Fe,Midnight 3.7564785714285716 0.0 5.33067 233pM Fe,Midnight 1.6309933333333333 1.47148 1.86676 1160pM Fe,Midday 1.6334185714285714 1.18748 1.92293 1160pM Fe,Midnight 2.9014658333333334 1.84639 4.16283 High carbon,Dark 3.152194466666667 0.220287 5.57784 High carbon,Light 1.881827923076923 0.313786 4.15411 Low carbon,Dark 1.65624 1.65624 1.65624 Phloroglucinol 1.121059 0.928997 1.26257 Silicon starvation,12h 1.63432 1.63432 1.63432