condition mean min max 12pM Fe,Midday 22.907 22.907 22.907 12pM Fe,Midnight 17.39685 15.3469 19.4468 58pM Fe,Midday 14.0643 14.0643 14.0643 58pM Fe,Midnight 10.814344285714286 0.0 16.1772 233pM Fe,Midnight 8.664046666666668 7.69611 9.85303 1160pM Fe,Midday 12.040242857142857 8.8901 16.0814 1160pM Fe,Midnight 5.092255 2.68811 9.72782 High carbon,Dark 9.793806666666667 0.74094 20.7243 High carbon,Light 7.278253384615384 0.0 14.1158 Low carbon,Dark 21.2703 21.2703 21.2703 Phloroglucinol 13.403936666666667 9.37411 17.1422 Silicon starvation,12h 58.5171 58.5171 58.5171