condition mean min max 12pM Fe,Midday 35.6091 35.6091 35.6091 12pM Fe,Midnight 32.7938 32.699 32.8886 58pM Fe,Midday 29.9662 29.9662 29.9662 58pM Fe,Midnight 31.116314285714285 18.0041 88.5212 233pM Fe,Midnight 22.775133333333333 21.4432 23.8821 1160pM Fe,Midday 33.79741428571428 31.723 37.4717 1160pM Fe,Midnight 11.064845 8.41784 13.5676 High carbon,Dark 14.767123333333334 4.88661 31.7075 High carbon,Light 12.796287538461538 0.711308 34.1856 Low carbon,Dark 15.7809 15.7809 15.7809 Phloroglucinol 34.01296666666667 27.5506 37.6631 Silicon starvation,12h 23.9442 23.9442 23.9442