condition mean min max 12pM Fe,Midday 40.1172 40.1172 40.1172 12pM Fe,Midnight 32.36705 31.6458 33.0883 58pM Fe,Midday 27.4299 27.4299 27.4299 58pM Fe,Midnight 23.1941 0.0 29.2513 233pM Fe,Midnight 25.6658 24.1746 27.1293 1160pM Fe,Midday 30.855842857142857 28.9817 32.981 1160pM Fe,Midnight 13.834820833333334 9.68435 22.1442 High carbon,Dark 25.528466666666667 12.3667 42.1057 High carbon,Light 21.882034615384615 6.54199 49.546 Low carbon,Dark 17.5936 17.5936 17.5936 Phloroglucinol 27.997999999999998 20.5678 37.2707 Silicon starvation,12h 34.8866 34.8866 34.8866