condition mean min max 12pM Fe,Midday 139.528 139.528 139.528 12pM Fe,Midnight 90.5875 84.5188 96.6562 58pM Fe,Midday 95.7773 95.7773 95.7773 58pM Fe,Midnight 91.77385714285714 49.5593 255.671 233pM Fe,Midnight 25.916566666666668 23.6803 27.4191 1160pM Fe,Midday 51.750928571428574 46.9431 59.7629 1160pM Fe,Midnight 40.032575 25.8324 53.5535 High carbon,Dark 36.63012066666666 5.12958 82.6073 High carbon,Light 40.49931923076923 1.17543 106.944 Low carbon,Dark 51.4226 51.4226 51.4226 Phloroglucinol 3.2422633333333333 1.80271 5.22907 Silicon starvation,12h 1.43224 1.43224 1.43224