condition mean min max 12pM Fe,Midday 45.049 45.049 45.049 12pM Fe,Midnight 40.19355 38.4345 41.9526 58pM Fe,Midday 51.0845 51.0845 51.0845 58pM Fe,Midnight 37.516714285714286 25.1017 77.7393 233pM Fe,Midnight 15.716433333333333 14.4005 17.0237 1160pM Fe,Midday 27.977714285714285 25.542 31.0995 1160pM Fe,Midnight 16.364641666666667 11.9662 19.404 High carbon,Dark 18.338179333333333 3.2312 54.2011 High carbon,Light 16.09214076923077 3.74802 43.1382 Low carbon,Dark 17.7677 17.7677 17.7677 Phloroglucinol 19.787266666666667 12.0589 29.053 Silicon starvation,12h 33.4702 33.4702 33.4702