condition mean min max 12pM Fe,Midday 51.4783 51.4783 51.4783 12pM Fe,Midnight 52.388850000000005 47.0311 57.7466 58pM Fe,Midday 45.1247 45.1247 45.1247 58pM Fe,Midnight 45.3266 0.0 60.5926 233pM Fe,Midnight 27.456266666666668 24.3701 30.561 1160pM Fe,Midday 32.120085714285715 22.7479 44.646 1160pM Fe,Midnight 32.6245 11.7576 50.2826 High carbon,Dark 42.32752 18.934 71.2549 High carbon,Light 40.57810615384616 3.3988 77.1104 Low carbon,Dark 48.4703 48.4703 48.4703 Phloroglucinol 46.34066666666667 40.6989 50.7954 Silicon starvation,12h 140.426 140.426 140.426