condition mean min max 12pM Fe,Midday 16.9752 16.9752 16.9752 12pM Fe,Midnight 14.7979 13.3688 16.227 58pM Fe,Midday 19.5721 19.5721 19.5721 58pM Fe,Midnight 13.089342857142857 0.0 18.8825 233pM Fe,Midnight 12.919503333333333 9.88511 15.5254 1160pM Fe,Midday 14.105785714285714 11.5961 17.3967 1160pM Fe,Midnight 4.3275 1.00696 11.3015 High carbon,Dark 12.018952666666667 4.63908 24.3412 High carbon,Light 7.518587461538462 0.232267 13.9838 Low carbon,Dark 7.2443 7.2443 7.2443 Phloroglucinol 9.147893333333334 5.74544 13.3175 Silicon starvation,12h 9.36568 9.36568 9.36568