condition mean min max 12pM Fe,Midday 37.4447 37.4447 37.4447 12pM Fe,Midnight 40.29785 37.4236 43.1721 58pM Fe,Midday 25.9327 25.9327 25.9327 58pM Fe,Midnight 29.963714285714286 24.514 33.917 233pM Fe,Midnight 27.581933333333332 26.4179 28.6017 1160pM Fe,Midday 30.720842857142856 29.7818 31.6203 1160pM Fe,Midnight 47.41648333333333 17.6451 70.3121 High carbon,Dark 24.008893333333333 10.7163 33.8419 High carbon,Light 23.856383076923077 2.19224 47.5868 Low carbon,Dark 21.6267 21.6267 21.6267 Phloroglucinol 61.57423333333333 49.4339 74.0716 Silicon starvation,12h 44.4538 44.4538 44.4538