condition mean min max 12pM Fe 12.832615 3.02158 22.64365 58pM Fe 36.1517 0.0 72.3034 233pM Fe 70.88356666666667 70.88356666666667 70.88356666666667 1160pM Fe 64.34258607142857 12.126597142857143 116.558575 Dark 24.934482 4.90995 44.959013999999996 Light 20.497607692307692 20.497607692307692 20.497607692307692 Phloroglucinol 2.2668500000000003 2.2668500000000003 2.2668500000000003