condition mean min max 12pM Fe 0.0 0.0 0.0 58pM Fe 0.7918657142857143 0.0 1.5837314285714286 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.0 0.0 0.0 Dark 3.5839 0.0 7.1678 Light 0.7318238461538461 0.7318238461538461 0.7318238461538461 Phloroglucinol 3.85445 3.85445 3.85445