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 0.13655066666666665 0.0 0.2731013333333333 Light 0.08039784615384615 0.08039784615384615 0.08039784615384615 Phloroglucinol 0.071089 0.071089 0.071089