condition mean min max 12pM Fe,Midday 41.5818 41.5818 41.5818 12pM Fe,Midnight 27.64145 26.3794 28.9035 58pM Fe,Midday 33.9879 33.9879 33.9879 58pM Fe,Midnight 15.360242857142856 0.0 21.6805 233pM Fe,Midnight 17.213066666666666 16.2905 17.7152 1160pM Fe,Midday 30.52862857142857 28.7676 34.3439 1160pM Fe,Midnight 7.494319166666667 4.25893 11.9893 High carbon,Dark 20.269786666666665 11.9048 31.2619 High carbon,Light 12.90629 1.34986 22.2086 Low carbon,Dark 14.8681 14.8681 14.8681 Phloroglucinol 26.73956666666667 21.936 35.8596 Silicon starvation,12h 22.4217 22.4217 22.4217