condition mean min max 12pM Fe,Midday 20.6311 20.6311 20.6311 12pM Fe,Midnight 21.63635 19.2237 24.049 58pM Fe,Midday 31.543 31.543 31.543 58pM Fe,Midnight 17.3786 0.0 25.5465 233pM Fe,Midnight 36.01006666666667 29.5921 42.245 1160pM Fe,Midday 4.1923571428571424 2.50664 6.30679 1160pM Fe,Midnight 30.307754166666665 9.81305 63.8824 High carbon,Dark 56.41304 18.403 101.165 High carbon,Light 42.61784615384615 0.0 126.43 Low carbon,Dark 25.4224 25.4224 25.4224 Phloroglucinol 16.333386666666666 7.74116 26.4985 Silicon starvation,12h 39.0427 39.0427 39.0427