condition mean min max 12pM Fe,Midday 43.0688 43.0688 43.0688 12pM Fe,Midnight 28.01605 24.8851 31.147 58pM Fe,Midday 29.1295 29.1295 29.1295 58pM Fe,Midnight 18.6098 0.0 23.3012 233pM Fe,Midnight 23.767966666666666 21.4267 27.4654 1160pM Fe,Midday 16.2671 12.5394 19.2701 1160pM Fe,Midnight 16.379943333333333 6.71052 32.758 High carbon,Dark 29.440693333333332 12.7557 51.3631 High carbon,Light 28.154886153846153 3.3529 47.0615 Low carbon,Dark 12.0664 12.0664 12.0664 Phloroglucinol 15.947966666666666 10.4847 22.9346 Silicon starvation,12h 59.7128 59.7128 59.7128