condition mean min max 12pM Fe,Midday 18.3134 18.3134 18.3134 12pM Fe,Midnight 47.1961 33.6092 60.783 58pM Fe,Midday 12.3917 12.3917 12.3917 58pM Fe,Midnight 32.146257142857145 0.0 46.6255 233pM Fe,Midnight 36.535466666666665 27.966 44.7418 1160pM Fe,Midday 14.16582 5.79329 19.8213 1160pM Fe,Midnight 29.784716666666665 20.1316 39.0209 High carbon,Dark 20.498656666666665 3.59669 45.6892 High carbon,Light 20.32472923076923 0.0 38.733 Low carbon,Dark 19.2555 19.2555 19.2555 Phloroglucinol 30.232533333333333 24.9538 35.777 Silicon starvation,12h 30.0334 30.0334 30.0334