condition mean min max 12pM Fe,Midday 40.7373 40.7373 40.7373 12pM Fe,Midnight 15.0412 14.9404 15.142 58pM Fe,Midday 41.2703 41.2703 41.2703 58pM Fe,Midnight 17.807895714285713 7.75725 69.9592 233pM Fe,Midnight 14.0739 13.4194 14.953 1160pM Fe,Midday 36.8355 35.3789 39.9889 1160pM Fe,Midnight 22.917141666666666 12.5339 29.9032 High carbon,Dark 31.021698666666666 4.81078 44.7688 High carbon,Light 32.97851 2.93239 62.8615 Low carbon,Dark 17.5885 17.5885 17.5885 Phloroglucinol 46.353566666666666 32.9713 69.587 Silicon starvation,12h 79.1643 79.1643 79.1643