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 0.231329 0.0 0.462658 Light 0.7677492307692307 0.7677492307692307 0.7677492307692307 Phloroglucinol 0.0 0.0 0.0