condition mean min max 12pM Fe,Midday 38.6367 38.6367 38.6367 12pM Fe,Midnight 19.95595 19.588 20.3239 58pM Fe,Midday 32.1999 32.1999 32.1999 58pM Fe,Midnight 13.880685714285715 0.0 18.1668 233pM Fe,Midnight 15.9703 14.9687 17.0679 1160pM Fe,Midday 21.812342857142855 20.1378 23.5308 1160pM Fe,Midnight 10.205686666666667 7.78345 12.6264 High carbon,Dark 15.232911333333334 6.02758 25.2779 High carbon,Light 17.1658 1.26045 37.8136 Low carbon,Dark 10.5855 10.5855 10.5855 Phloroglucinol 21.029633333333333 18.8619 24.4867 Silicon starvation,12h 30.6741 30.6741 30.6741