condition mean min max 12pM Fe 71.7733 69.8195 73.72710000000001 58pM Fe 65.36290714285714 56.9115 73.81431428571429 233pM Fe 50.23003333333333 50.23003333333333 50.23003333333333 1160pM Fe 42.75832857142857 37.2423 48.27435714285714 Dark 39.23373 33.9712 44.49626 Light 36.51030769230769 36.51030769230769 36.51030769230769 Phloroglucinol 51.5633 51.5633 51.5633