condition mean min max 12pM Fe,Midday 31.558 31.558 31.558 12pM Fe,Midnight 37.20055 36.006 38.3951 58pM Fe,Midday 24.2315 24.2315 24.2315 58pM Fe,Midnight 28.478214285714284 23.1786 31.4789 233pM Fe,Midnight 24.777066666666666 23.2408 25.9067 1160pM Fe,Midday 22.035314285714286 18.6125 24.4424 1160pM Fe,Midnight 14.2374 11.4064 18.7353 High carbon,Dark 16.92674 6.76506 31.0622 High carbon,Light 12.50702 2.84053 23.3854 Low carbon,Dark 14.5154 14.5154 14.5154 Phloroglucinol 25.674366666666668 20.6331 35.4491 Silicon starvation,12h 27.4897 27.4897 27.4897