condition mean min max 12pM Fe,Midday 18.0479 18.0479 18.0479 12pM Fe,Midnight 13.22345 11.8176 14.6293 58pM Fe,Midday 9.06919 9.06919 9.06919 58pM Fe,Midnight 6.176661428571428 0.0 8.61051 233pM Fe,Midnight 5.155806666666667 4.44038 5.52487 1160pM Fe,Midday 10.947831428571428 9.58666 13.8422 1160pM Fe,Midnight 2.5018236666666667 0.800751 4.14218 High carbon,Dark 8.338455333333334 1.09312 15.1871 High carbon,Light 9.759393076923077 1.31174 19.4793 Low carbon,Dark 13.3964 13.3964 13.3964 Phloroglucinol 8.992466666666667 7.39992 11.6889 Silicon starvation,12h 18.8894 18.8894 18.8894