condition mean min max 12pM Fe,Midday 25.1999 25.1999 25.1999 12pM Fe,Midnight 26.55805 26.1699 26.9462 58pM Fe,Midday 16.4483 16.4483 16.4483 58pM Fe,Midnight 23.317928571428574 19.3668 37.905 233pM Fe,Midnight 13.846633333333333 13.6163 14.1556 1160pM Fe,Midday 11.011328571428571 9.6032 12.0966 1160pM Fe,Midnight 14.846008333333334 12.0326 17.3172 High carbon,Dark 16.744618 6.23011 36.678 High carbon,Light 12.038055923076923 0.0 24.7221 Low carbon,Dark 5.54456 5.54456 5.54456 Phloroglucinol 7.45325 5.03349 9.68615 Silicon starvation,12h 4.30745 4.30745 4.30745