condition mean min max 12pM Fe,Midday 57.0002 57.0002 57.0002 12pM Fe,Midnight 47.714 46.1987 49.2293 58pM Fe,Midday 43.926 43.926 43.926 58pM Fe,Midnight 36.992399999999996 31.5129 39.5998 233pM Fe,Midnight 29.545866666666665 28.6523 30.3661 1160pM Fe,Midday 36.65602857142857 33.2473 39.8409 1160pM Fe,Midnight 15.170766666666667 10.4862 24.1485 High carbon,Dark 28.764200666666667 6.04151 47.8751 High carbon,Light 20.342500769230767 5.74067 41.8623 Low carbon,Dark 28.2335 28.2335 28.2335 Phloroglucinol 29.702566666666666 17.9343 47.954 Silicon starvation,12h 49.3784 49.3784 49.3784