condition mean min max 12pM Fe 0.07092175 0.0 0.1418435 58pM Fe 0.016300142857142857 0.0 0.032600285714285714 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.0 0.0 0.0 Dark 0.0 0.0 0.0 Light 0.0 0.0 0.0 Phloroglucinol 0.0 0.0 0.0