condition mean min max 12pM Fe 0.0 0.0 0.0 58pM Fe 0.03999785714285714 0.0 0.07999571428571428 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.0 0.0 0.0 Dark 0.364168 0.0 0.728336 Light 0.9211976923076923 0.9211976923076923 0.9211976923076923 Phloroglucinol 3.290720666666666 3.290720666666666 3.290720666666666