condition mean min max 12pM Fe,Midday 32.668 32.668 32.668 12pM Fe,Midnight 28.95655 27.6131 30.3 58pM Fe,Midday 24.1544 24.1544 24.1544 58pM Fe,Midnight 27.945128571428572 20.3115 53.0275 233pM Fe,Midnight 13.582566666666667 11.1477 15.9047 1160pM Fe,Midday 20.22947142857143 16.617 23.1292 1160pM Fe,Midnight 11.324399166666666 7.40147 14.6355 High carbon,Dark 20.99451 4.72846 67.0298 High carbon,Light 15.811250769230769 2.28326 42.8006 Low carbon,Dark 27.3905 27.3905 27.3905 Phloroglucinol 15.5741 12.9201 20.529 Silicon starvation,12h 31.8271 31.8271 31.8271