condition mean min max 12pM Fe,Midday 23.5713 23.5713 23.5713 12pM Fe,Midnight 28.171 24.7949 31.5471 58pM Fe,Midday 20.2576 20.2576 20.2576 58pM Fe,Midnight 17.173671428571428 0.0 24.0123 233pM Fe,Midnight 20.2248 18.1384 22.1299 1160pM Fe,Midday 17.71607142857143 14.8462 19.2902 1160pM Fe,Midnight 11.863186666666667 8.50179 17.1039 High carbon,Dark 13.732076666666666 3.15034 24.3149 High carbon,Light 10.616216923076923 1.11652 19.483 Low carbon,Dark 16.2895 16.2895 16.2895 Phloroglucinol 17.6921 13.8366 21.5968 Silicon starvation,12h 25.2811 25.2811 25.2811