condition mean min max 12pM Fe,Midday 26.5983 26.5983 26.5983 12pM Fe,Midnight 23.7666 19.872 27.6612 58pM Fe,Midday 22.2563 22.2563 22.2563 58pM Fe,Midnight 16.12677142857143 0.0 20.5823 233pM Fe,Midnight 15.406766666666668 12.4481 17.1048 1160pM Fe,Midday 16.517585714285715 14.3425 19.4283 1160pM Fe,Midnight 11.143756666666667 8.04377 16.5028 High carbon,Dark 15.459292 5.04815 37.3433 High carbon,Light 15.024976923076922 2.04245 29.9092 Low carbon,Dark 11.7449 11.7449 11.7449 Phloroglucinol 22.412933333333335 19.0224 27.3792 Silicon starvation,12h 62.6729 62.6729 62.6729