condition mean min max 12pM Fe,Midday 33.6392 33.6392 33.6392 12pM Fe,Midnight 29.01625 28.554 29.4785 58pM Fe,Midday 26.2904 26.2904 26.2904 58pM Fe,Midnight 20.828028571428572 0.0 26.8793 233pM Fe,Midnight 18.4607 16.9749 19.248 1160pM Fe,Midday 21.703757142857143 18.0716 25.5192 1160pM Fe,Midnight 14.28195 11.1915 18.3364 High carbon,Dark 22.011286666666667 14.6145 31.8173 High carbon,Light 17.90324769230769 6.94658 31.2734 Low carbon,Dark 17.4809 17.4809 17.4809 Phloroglucinol 34.92423333333333 25.6936 43.0145 Silicon starvation,12h 27.3979 27.3979 27.3979