condition mean min max 12pM Fe 0.0 0.0 0.0 58pM Fe 0.0 0.0 0.0 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.007250458333333334 0.0 0.014500916666666667 Dark 0.0 0.0 0.0 Light 0.10263307692307692 0.10263307692307692 0.10263307692307692 Phloroglucinol 0.0 0.0 0.0