condition mean min max 12pM Fe,Midday 13.2772 13.2772 13.2772 12pM Fe,Midnight 13.37725 12.6942 14.0603 58pM Fe,Midday 14.5906 14.5906 14.5906 58pM Fe,Midnight 10.202275714285713 0.0 15.1824 233pM Fe,Midnight 17.6826 16.2705 19.2544 1160pM Fe,Midday 8.627327142857142 8.05185 9.70674 1160pM Fe,Midnight 11.99171 6.88665 20.4507 High carbon,Dark 18.399800666666668 5.09116 28.6224 High carbon,Light 17.005143846153846 0.0 41.0994 Low carbon,Dark 8.35158 8.35158 8.35158 Phloroglucinol 7.41749 5.00938 9.19165 Silicon starvation,12h 21.9318 21.9318 21.9318