condition mean min max 12pM Fe,Midday 36.5374 36.5374 36.5374 12pM Fe,Midnight 38.31 35.6226 40.9974 58pM Fe,Midday 26.2681 26.2681 26.2681 58pM Fe,Midnight 35.24842857142857 0.0 43.4959 233pM Fe,Midnight 53.67046666666667 51.1973 55.6679 1160pM Fe,Midday 22.60307142857143 19.3046 28.9611 1160pM Fe,Midnight 15.372208333333333 11.0025 23.2534 High carbon,Dark 27.97659133333333 1.80967 63.2711 High carbon,Light 23.70151 4.70533 42.7343 Low carbon,Dark 42.6736 42.6736 42.6736 Phloroglucinol 9.237696666666666 6.13585 14.7802 Silicon starvation,12h 50.6723 50.6723 50.6723