condition mean min max 12pM Fe,Midday 18.3496 18.3496 18.3496 12pM Fe,Midnight 23.035600000000002 19.7972 26.274 58pM Fe,Midday 21.9672 21.9672 21.9672 58pM Fe,Midnight 27.242142857142856 18.301 69.7653 233pM Fe,Midnight 15.744566666666667 15.2844 16.3164 1160pM Fe,Midday 19.98614285714286 17.1963 23.5298 1160pM Fe,Midnight 9.878626666666667 8.25195 11.3903 High carbon,Dark 15.971740666666667 1.24419 37.1731 High carbon,Light 8.618305384615384 1.61751 19.1611 Low carbon,Dark 22.6422 22.6422 22.6422 Phloroglucinol 5.448663333333333 4.09447 7.08648 Silicon starvation,12h 21.7182 21.7182 21.7182