condition mean min max 12pM Fe,Midday 0.0 0.0 0.0 12pM Fe,Midnight 0.0 0.0 0.0 58pM Fe,Midday 0.0 0.0 0.0 58pM Fe,Midnight 0.26282285714285714 0.0 1.83976 233pM Fe,Midnight 0.300972 0.0 0.452502 1160pM Fe,Midday 0.08162628571428572 0.0 0.571384 1160pM Fe,Midnight 0.33740416666666667 0.0 1.22812 High carbon,Dark 0.9393998 0.0 4.39238 High carbon,Light 0.36164153846153846 0.0 4.70134 Low carbon,Dark 4.72277 4.72277 4.72277 Phloroglucinol 2.804806666666667 2.29684 3.64243 Silicon starvation,12h 2.48046 2.48046 2.48046