condition mean min max 12pM Fe,Midday 43.313 43.313 43.313 12pM Fe,Midnight 26.5584 23.7328 29.384 58pM Fe,Midday 32.556 32.556 32.556 58pM Fe,Midnight 32.4477 19.0262 82.7807 233pM Fe,Midnight 31.316066666666668 28.8705 33.0279 1160pM Fe,Midday 31.117428571428572 29.3013 33.2915 1160pM Fe,Midnight 12.056496666666666 7.53764 17.9091 High carbon,Dark 33.76372 20.1529 60.1596 High carbon,Light 25.766936923076923 9.14768 47.7612 Low carbon,Dark 25.7311 25.7311 25.7311 Phloroglucinol 31.7661 21.7889 37.7591 Silicon starvation,12h 74.7263 74.7263 74.7263