condition mean min max 12pM Fe,Midday 43.5916 43.5916 43.5916 12pM Fe,Midnight 38.05695 37.5072 38.6067 58pM Fe,Midday 36.83 36.83 36.83 58pM Fe,Midnight 28.584857142857143 0.0 38.0439 233pM Fe,Midnight 33.061166666666665 30.8577 35.2042 1160pM Fe,Midday 34.842357142857146 32.398 37.0433 1160pM Fe,Midnight 32.68383333333333 21.6129 42.699 High carbon,Dark 58.375573333333335 25.5264 129.711 High carbon,Light 57.816184615384614 22.1861 105.601 Low carbon,Dark 58.4958 58.4958 58.4958 Phloroglucinol 93.1078 75.7442 108.734 Silicon starvation,12h 277.466 277.466 277.466