condition mean min max 12pM Fe,Midday 26.8066 26.8066 26.8066 12pM Fe,Midnight 25.488 21.904 29.072 58pM Fe,Midday 16.6038 16.6038 16.6038 58pM Fe,Midnight 14.681528571428572 0.0 20.9015 233pM Fe,Midnight 22.0248 18.8407 24.9259 1160pM Fe,Midday 16.862257142857143 11.7447 23.6037 1160pM Fe,Midnight 11.337591666666667 7.71058 14.1666 High carbon,Dark 29.635326666666668 8.8917 59.0615 High carbon,Light 25.162075384615385 6.76345 65.8423 Low carbon,Dark 21.1576 21.1576 21.1576 Phloroglucinol 34.134233333333334 26.8741 44.0929 Silicon starvation,12h 68.1987 68.1987 68.1987