condition mean min max 12pM Fe 20.130625 18.92225 21.339 58pM Fe 14.312492857142857 12.970885714285714 15.6541 233pM Fe 9.79276 9.79276 9.79276 1160pM Fe 10.169481428571428 6.92922 13.409742857142858 Dark 14.908551333333333 13.3366 16.480502666666666 Light 11.461969230769231 11.461969230769231 11.461969230769231 Phloroglucinol 16.5386 16.5386 16.5386