condition mean min max 12pM Fe,Midday 43.7998 43.7998 43.7998 12pM Fe,Midnight 46.01275 45.55 46.4755 58pM Fe,Midday 51.1048 51.1048 51.1048 58pM Fe,Midnight 33.383385714285716 0.0 42.7313 233pM Fe,Midnight 52.80586666666667 51.8801 53.6989 1160pM Fe,Midday 46.964642857142856 37.4434 54.0221 1160pM Fe,Midnight 31.288816666666666 24.5833 44.2368 High carbon,Dark 47.32862 20.2442 72.6841 High carbon,Light 39.715907692307695 13.1456 69.4504 Low carbon,Dark 57.9153 57.9153 57.9153 Phloroglucinol 41.37173333333333 29.9987 54.5619 Silicon starvation,12h 50.8187 50.8187 50.8187