condition mean min max 12pM Fe,Midday 3.65621 3.65621 3.65621 12pM Fe,Midnight 15.9525 11.7527 20.1523 58pM Fe,Midday 3.34303 3.34303 3.34303 58pM Fe,Midnight 20.23211 0.0 54.7671 233pM Fe,Midnight 18.975333333333335 16.9255 20.3227 1160pM Fe,Midday 3.7352857142857143 1.77898 11.1607 1160pM Fe,Midnight 14.073761666666668 3.00566 35.2144 High carbon,Dark 10.364467333333334 1.5453 21.0947 High carbon,Light 3.8929336923076923 0.0 17.1508 Low carbon,Dark 5.34709 5.34709 5.34709 Phloroglucinol 0.7451786666666667 0.166065 1.22191 Silicon starvation,12h 2.35764 2.35764 2.35764