condition mean min max 12pM Fe,Midday 54.0722 54.0722 54.0722 12pM Fe,Midnight 50.444649999999996 43.1376 57.7517 58pM Fe,Midday 46.2071 46.2071 46.2071 58pM Fe,Midnight 48.2379 31.0963 131.657 233pM Fe,Midnight 37.900133333333336 36.2742 39.6713 1160pM Fe,Midday 41.65065714285714 37.9709 46.9058 1160pM Fe,Midnight 21.445308333333333 17.4995 24.8583 High carbon,Dark 19.31197866666667 6.62523 40.6537 High carbon,Light 13.910786307692307 0.501682 50.919 Low carbon,Dark 18.0545 18.0545 18.0545 Phloroglucinol 32.6394 31.7944 33.8115 Silicon starvation,12h 15.5934 15.5934 15.5934