condition mean min max 12pM Fe,Midday 53.6254 53.6254 53.6254 12pM Fe,Midnight 44.58555 39.7607 49.4104 58pM Fe,Midday 61.949 61.949 61.949 58pM Fe,Midnight 30.070314285714286 0.0 43.6557 233pM Fe,Midnight 19.860966666666666 18.8636 21.2381 1160pM Fe,Midday 37.78047142857143 32.1748 45.1593 1160pM Fe,Midnight 18.626025 15.3675 24.6424 High carbon,Dark 21.932834666666665 0.0 67.0358 High carbon,Light 16.83954076923077 1.83881 50.4576 Low carbon,Dark 20.1711 20.1711 20.1711 Phloroglucinol 11.445236666666666 4.04481 15.2229 Silicon starvation,12h 29.6637 29.6637 29.6637