condition mean min max 12pM Fe 0.0 0.0 0.0 58pM Fe 0.095835 0.0 0.19167 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.0 0.0 0.0 Dark 4.402236 0.0 8.804472 Light 0.16932846153846154 0.16932846153846154 0.16932846153846154 Phloroglucinol 1.3173 1.3173 1.3173