condition mean min max 12pM Fe,Midday 15.3335 15.3335 15.3335 12pM Fe,Midnight 12.9269 12.4618 13.392 58pM Fe,Midday 13.509 13.509 13.509 58pM Fe,Midnight 12.2238 8.0375 31.4623 233pM Fe,Midnight 4.440103333333333 4.32904 4.56102 1160pM Fe,Midday 8.879647142857143 8.47865 9.60638 1160pM Fe,Midnight 5.079014166666667 4.26213 6.08019 High carbon,Dark 6.081021266666666 0.771509 11.209 High carbon,Light 3.7378321538461536 0.149859 7.8035 Low carbon,Dark 2.94825 2.94825 2.94825 Phloroglucinol 8.760196666666667 5.8787 10.6034 Silicon starvation,12h 3.31094 3.31094 3.31094