condition mean min max 12pM Fe,Midday 41.7415 41.7415 41.7415 12pM Fe,Midnight 41.033 40.3012 41.7648 58pM Fe,Midday 36.4788 36.4788 36.4788 58pM Fe,Midnight 37.07367142857143 32.3311 54.9575 233pM Fe,Midnight 30.935933333333335 29.3972 31.9768 1160pM Fe,Midday 30.26245714285714 28.4457 32.5052 1160pM Fe,Midnight 26.005341666666666 20.5173 33.5965 High carbon,Dark 24.153406666666665 10.3729 35.9251 High carbon,Light 17.821467692307692 1.80724 24.9295 Low carbon,Dark 17.8364 17.8364 17.8364 Phloroglucinol 24.5249 18.374 34.5124 Silicon starvation,12h 28.1477 28.1477 28.1477