condition mean min max 12pM Fe,Midday 54.1503 54.1503 54.1503 12pM Fe,Midnight 62.6601 59.2443 66.0759 58pM Fe,Midday 32.3885 32.3885 32.3885 58pM Fe,Midnight 42.56682857142857 30.5299 51.0929 233pM Fe,Midnight 20.601133333333333 20.2582 20.7932 1160pM Fe,Midday 20.584614285714288 18.6443 23.8259 1160pM Fe,Midnight 13.900425 10.2305 16.8359 High carbon,Dark 27.72428 10.1738 50.5027 High carbon,Light 16.040051538461537 1.48893 30.0748 Low carbon,Dark 13.0761 13.0761 13.0761 Phloroglucinol 36.316966666666666 29.6469 48.0677 Silicon starvation,12h 33.5516 33.5516 33.5516