condition mean min max 12pM Fe,Midday 11.1837 11.1837 11.1837 12pM Fe,Midnight 29.0516 27.3049 30.7983 58pM Fe,Midday 8.58744 8.58744 8.58744 58pM Fe,Midnight 29.094385714285714 23.9627 44.4206 233pM Fe,Midnight 19.7672 18.975 20.2301 1160pM Fe,Midday 5.12429 4.63481 5.68038 1160pM Fe,Midnight 15.333525 13.6404 16.6692 High carbon,Dark 11.587696 1.38634 19.5725 High carbon,Light 4.155251 0.141055 6.80555 Low carbon,Dark 6.42994 6.42994 6.42994 Phloroglucinol 7.00983 5.46805 8.82171 Silicon starvation,12h 5.59294 5.59294 5.59294