condition mean min max 12pM Fe,Midday 35.1432 35.1432 35.1432 12pM Fe,Midnight 26.7606 25.7262 27.795 58pM Fe,Midday 22.7576 22.7576 22.7576 58pM Fe,Midnight 18.5159 0.0 27.6169 233pM Fe,Midnight 18.744699999999998 16.3084 21.0302 1160pM Fe,Midday 14.496557142857142 12.0666 16.2977 1160pM Fe,Midnight 14.229115833333333 7.86813 20.5009 High carbon,Dark 18.795894666666666 3.42288 40.7484 High carbon,Light 11.299582307692308 4.86314 17.7846 Low carbon,Dark 22.9702 22.9702 22.9702 Phloroglucinol 3.14601 1.36537 4.05985 Silicon starvation,12h 11.394 11.394 11.394