condition mean min max 12pM Fe,Midday 18.7392 18.7392 18.7392 12pM Fe,Midnight 20.50825 20.2322 20.7843 58pM Fe,Midday 16.7792 16.7792 16.7792 58pM Fe,Midnight 18.275214285714284 15.7028 22.4411 233pM Fe,Midnight 5.264506666666667 5.0123 5.51709 1160pM Fe,Midday 11.636871428571428 10.5827 13.0235 1160pM Fe,Midnight 7.3921475 2.73238 10.5817 High carbon,Dark 14.588349133333333 0.283537 31.7032 High carbon,Light 7.971792307692308 1.36913 26.5264 Low carbon,Dark 15.843 15.843 15.843 Phloroglucinol 2.49992 1.6815 3.44314 Silicon starvation,12h 3.94419 3.94419 3.94419