condition mean min max 12pM Fe,Midday 17.741 17.741 17.741 12pM Fe,Midnight 17.6862 15.7244 19.648 58pM Fe,Midday 12.3087 12.3087 12.3087 58pM Fe,Midnight 14.497085714285715 0.0 20.0618 233pM Fe,Midnight 18.6228 17.3712 20.0411 1160pM Fe,Midday 10.45816857142857 8.3467 12.4185 1160pM Fe,Midnight 11.2868425 8.17811 13.0372 High carbon,Dark 21.848613333333333 11.8686 32.3413 High carbon,Light 21.20219846153846 3.55014 47.4718 Low carbon,Dark 22.9317 22.9317 22.9317 Phloroglucinol 33.81933333333333 24.1739 39.5117 Silicon starvation,12h 35.7881 35.7881 35.7881