condition mean min max 12pM Fe 19.710225 10.9059 28.51455 58pM Fe 15.872478571428573 11.4595 20.285457142857144 233pM Fe 36.9755 36.9755 36.9755 1160pM Fe 15.972455595238095 8.617602857142858 23.327308333333335 Dark 36.44943 22.1522 50.74666 Light 33.90533307692308 33.90533307692308 33.90533307692308 Phloroglucinol 51.6315 51.6315 51.6315