condition mean min max 12pM Fe,Midday 18.8341 18.8341 18.8341 12pM Fe,Midnight 13.4128 12.9437 13.8819 58pM Fe,Midday 19.0923 19.0923 19.0923 58pM Fe,Midnight 12.009185714285714 0.0 15.4273 233pM Fe,Midnight 8.347746666666668 7.51587 8.7993 1160pM Fe,Midday 9.484602857142857 8.28834 10.8363 1160pM Fe,Midnight 9.29548 4.26324 16.1735 High carbon,Dark 14.895534666666666 3.18796 26.9437 High carbon,Light 10.59501 1.73386 17.8531 Low carbon,Dark 7.72547 7.72547 7.72547 Phloroglucinol 5.34723 3.66663 8.09768 Silicon starvation,12h 7.69889 7.69889 7.69889