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 0.0 0.0 0.0 Dark 0.0518595 0.0 0.103719 Light 0.0 0.0 0.0 Phloroglucinol 0.0 0.0 0.0