condition mean min max 12pM Fe,Midday 21.2063 21.2063 21.2063 12pM Fe,Midnight 43.7832 43.7304 43.836 58pM Fe,Midday 12.5897 12.5897 12.5897 58pM Fe,Midnight 51.03702857142857 48.324 58.9141 233pM Fe,Midnight 21.850233333333335 21.4035 22.4343 1160pM Fe,Midday 15.785671428571428 13.5573 20.4791 1160pM Fe,Midnight 34.39775 30.8012 39.8994 High carbon,Dark 14.250101333333333 7.94936 21.6589 High carbon,Light 7.523068461538461 1.90692 24.2874 Low carbon,Dark 6.92134 6.92134 6.92134 Phloroglucinol 11.01413 6.58742 16.8867 Silicon starvation,12h 13.4837 13.4837 13.4837