condition mean min max 12pM Fe 11.144925 10.1298 12.16005 58pM Fe 7.5687 5.81404 9.32336 233pM Fe 7.8724099999999995 7.8724099999999995 7.8724099999999995 1160pM Fe 4.230147023809524 4.1608583333333335 4.299435714285714 Dark 10.833903633333334 10.100907266666667 11.5669 Light 7.3713729230769225 7.3713729230769225 7.3713729230769225 Phloroglucinol 20.9583 20.9583 20.9583