condition mean min max 12pM Fe 15.2665 14.1148 16.4182 58pM Fe 10.251528571428572 10.127257142857143 10.3758 233pM Fe 12.5173 12.5173 12.5173 1160pM Fe 6.289336964285714 2.7288625 9.849811428571428 Dark 7.864383 7.41011 8.318656 Light 3.7667895384615386 3.7667895384615386 3.7667895384615386 Phloroglucinol 5.3315 5.3315 5.3315