condition mean min max 12pM Fe,Midday 36.8611 36.8611 36.8611 12pM Fe,Midnight 28.11355 28.0633 28.1638 58pM Fe,Midday 37.5179 37.5179 37.5179 58pM Fe,Midnight 25.808457142857144 24.311 27.5324 233pM Fe,Midnight 31.647566666666666 30.0569 32.4961 1160pM Fe,Midday 28.984557142857142 26.298 31.2939 1160pM Fe,Midnight 29.56745 20.2918 38.4909 High carbon,Dark 30.538193333333332 13.2236 42.7213 High carbon,Light 28.225470769230768 6.57725 45.4142 Low carbon,Dark 20.3364 20.3364 20.3364 Phloroglucinol 19.0411 10.2902 33.0342 Silicon starvation,12h 36.4203 36.4203 36.4203