condition mean min max 12pM Fe,Midday 20.7555 20.7555 20.7555 12pM Fe,Midnight 15.75745 13.7073 17.8076 58pM Fe,Midday 11.708 11.708 11.708 58pM Fe,Midnight 13.308857142857143 0.0 18.2474 233pM Fe,Midnight 7.8687233333333335 7.59397 8.1316 1160pM Fe,Midday 16.690885714285713 15.4037 18.6396 1160pM Fe,Midnight 9.221039166666667 7.12079 11.4015 High carbon,Dark 9.533069333333334 5.75683 18.7441 High carbon,Light 10.450464615384615 4.0034 19.8646 Low carbon,Dark 4.63746 4.63746 4.63746 Phloroglucinol 7.71394 4.79595 9.89854 Silicon starvation,12h 14.6878 14.6878 14.6878