condition mean min max 12pM Fe 0.46917975 0.3198645 0.618495 58pM Fe 0.25687435000000003 0.0 0.5137487000000001 233pM Fe 0.230634 0.230634 0.230634 1160pM Fe 0.9661236636904762 0.27869304166666664 1.6535542857142858 Dark 5.733762799999999 1.6182156 9.84931 Light 7.460834076923077 7.460834076923077 7.460834076923077 Phloroglucinol 4.6329400000000005 4.6329400000000005 4.6329400000000005