condition mean min max 12pM Fe,Midday 39.7795 39.7795 39.7795 12pM Fe,Midnight 34.35675 31.069 37.6445 58pM Fe,Midday 29.3083 29.3083 29.3083 58pM Fe,Midnight 26.43987142857143 0.0 34.677 233pM Fe,Midnight 30.117866666666668 29.7281 30.4306 1160pM Fe,Midday 33.34791428571429 32.0578 36.3696 1160pM Fe,Midnight 24.68134166666667 19.7226 27.7879 High carbon,Dark 35.89480666666667 13.3661 57.3864 High carbon,Light 32.054507692307695 12.6174 51.1007 Low carbon,Dark 24.273 24.273 24.273 Phloroglucinol 23.91946666666667 14.2684 36.8363 Silicon starvation,12h 60.7865 60.7865 60.7865