condition mean min max 12pM Fe 47.813375 43.051050000000004 52.5757 58pM Fe 41.27587142857143 33.739642857142854 48.8121 233pM Fe 30.8191 30.8191 30.8191 1160pM Fe 31.23995238095238 29.278433333333332 33.20147142857143 Dark 28.417952666666665 24.7811 32.054805333333334 Light 30.513992307692305 30.513992307692305 30.513992307692305 Phloroglucinol 23.6004 23.6004 23.6004