condition mean min max 12pM Fe,Midday 55.4348 55.4348 55.4348 12pM Fe,Midnight 35.8284 33.4861 38.1707 58pM Fe,Midday 50.6965 50.6965 50.6965 58pM Fe,Midnight 25.25642857142857 12.2399 28.5374 233pM Fe,Midnight 25.287633333333332 24.0905 26.0102 1160pM Fe,Midday 34.45701428571429 32.9665 37.5424 1160pM Fe,Midnight 16.199933333333334 13.2819 19.2629 High carbon,Dark 26.203206666666667 15.5216 37.5535 High carbon,Light 21.046386923076923 1.83541 34.495 Low carbon,Dark 16.6171 16.6171 16.6171 Phloroglucinol 25.980333333333334 20.5832 35.633 Silicon starvation,12h 21.9413 21.9413 21.9413