condition mean min max 12pM Fe 7.6268575 5.80256 9.451155 58pM Fe 13.809260714285715 5.90453 21.71399142857143 233pM Fe 16.8688 16.8688 16.8688 1160pM Fe 4.062596011904762 3.4174291666666665 4.707762857142857 Dark 12.759903666666666 12.7291 12.790707333333334 Light 6.8866169230769225 6.8866169230769225 6.8866169230769225 Phloroglucinol 1.960073 1.960073 1.960073