condition mean min max 12pM Fe 33.138774999999995 27.7601 38.51745 58pM Fe 25.53425 17.9643 33.1042 233pM Fe 30.836199999999998 30.836199999999998 30.836199999999998 1160pM Fe 29.555413095238094 19.833342857142856 39.277483333333336 Dark 20.510093666666666 15.8219 25.198287333333333 Light 15.730578461538462 15.730578461538462 15.730578461538462 Phloroglucinol 48.7318 48.7318 48.7318