condition mean min max 12pM Fe,Midday 8.33064 8.33064 8.33064 12pM Fe,Midnight 14.0139 13.5542 14.4736 58pM Fe,Midday 19.1417 19.1417 19.1417 58pM Fe,Midnight 18.7211 11.2817 47.765 233pM Fe,Midnight 9.802573333333333 9.66192 10.0391 1160pM Fe,Midday 6.054608571428571 5.28313 6.98096 1160pM Fe,Midnight 5.196869166666667 3.31373 7.83523 High carbon,Dark 8.210004 3.40736 13.8084 High carbon,Light 4.77114076923077 1.13092 9.37052 Low carbon,Dark 6.76849 6.76849 6.76849 Phloroglucinol 5.790093333333333 3.48288 8.33042 Silicon starvation,12h 14.6783 14.6783 14.6783