condition mean min max 12pM Fe,Midday 50.0281 50.0281 50.0281 12pM Fe,Midnight 47.238550000000004 43.3971 51.08 58pM Fe,Midday 38.7075 38.7075 38.7075 58pM Fe,Midnight 39.4735 29.9005 42.48 233pM Fe,Midnight 38.8088 37.907 39.3899 1160pM Fe,Midday 39.57872857142857 33.7625 42.7408 1160pM Fe,Midnight 20.915133333333333 18.49 22.9571 High carbon,Dark 40.38458 19.0438 56.2393 High carbon,Light 35.82981 7.53753 81.3584 Low carbon,Dark 31.4002 31.4002 31.4002 Phloroglucinol 52.7709 38.3742 76.4066 Silicon starvation,12h 75.95 75.95 75.95