condition mean min max 12pM Fe,Midday 0.612739 0.612739 0.612739 12pM Fe,Midnight 0.662661 0.51431 0.811012 58pM Fe,Midday 0.443602 0.443602 0.443602 58pM Fe,Midnight 0.27941585714285716 0.0 0.484686 233pM Fe,Midnight 0.19678566666666666 0.105811 0.242833 1160pM Fe,Midday 0.3903695714285714 0.13566 0.623871 1160pM Fe,Midnight 0.150655475 0.0 0.313483 High carbon,Dark 1.8083761 0.0882865 4.90471 High carbon,Light 0.3561064461538462 0.0 0.795584 Low carbon,Dark 0.543097 0.543097 0.543097 Phloroglucinol 0.6300363333333333 0.453769 0.87287 Silicon starvation,12h 0.285242 0.285242 0.285242