condition mean min max 12pM Fe,Midday 8.70827 8.70827 8.70827 12pM Fe,Midnight 8.628815 8.13676 9.12087 58pM Fe,Midday 3.98251 3.98251 3.98251 58pM Fe,Midnight 6.12107 0.0 8.36409 233pM Fe,Midnight 4.0518833333333335 3.40818 4.97243 1160pM Fe,Midday 4.454592857142857 3.20226 5.56158 1160pM Fe,Midnight 3.7769683333333335 1.82178 5.0268 High carbon,Dark 7.429306666666666 1.23869 23.5882 High carbon,Light 6.670347153846154 0.56474 19.2789 Low carbon,Dark 4.2118 4.2118 4.2118 Phloroglucinol 4.5261933333333335 1.95089 7.13689 Silicon starvation,12h 4.02322 4.02322 4.02322