condition mean min max 12pM Fe 39.23155 35.2453 43.2178 58pM Fe 29.703407142857145 26.616314285714285 32.7905 233pM Fe 15.2409 15.2409 15.2409 1160pM Fe 34.960205476190474 10.472296666666667 59.44811428571428 Dark 16.521469 14.6175 18.425438 Light 25.414926153846153 25.414926153846153 25.414926153846153 Phloroglucinol 27.3217 27.3217 27.3217