condition mean min max 12pM Fe 0.04529275 0.0 0.0905855 58pM Fe 0.009749428571428572 0.0 0.019498857142857144 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.010240285714285714 0.0 0.020480571428571428 Dark 0.0 0.0 0.0 Light 0.0 0.0 0.0 Phloroglucinol 0.0 0.0 0.0