condition mean min max 12pM Fe,Midday 29.6511 29.6511 29.6511 12pM Fe,Midnight 44.07295 40.836 47.3099 58pM Fe,Midday 27.1352 27.1352 27.1352 58pM Fe,Midnight 40.02271428571429 0.0 52.7349 233pM Fe,Midnight 49.649766666666665 49.0989 50.0853 1160pM Fe,Midday 46.257714285714286 39.6284 55.2329 1160pM Fe,Midnight 25.256791666666665 16.9918 34.0552 High carbon,Dark 27.461130533333332 0.643768 71.3373 High carbon,Light 22.546835846153847 0.752104 72.0306 Low carbon,Dark 28.7111 28.7111 28.7111 Phloroglucinol 8.005056666666666 4.70441 10.657 Silicon starvation,12h 42.523 42.523 42.523