condition mean min max 12pM Fe,Midday 19.5865 19.5865 19.5865 12pM Fe,Midnight 23.01495 22.6053 23.4246 58pM Fe,Midday 13.1066 13.1066 13.1066 58pM Fe,Midnight 22.645842857142856 17.6789 43.5171 233pM Fe,Midnight 15.516066666666667 15.1011 16.1998 1160pM Fe,Midday 13.8464 11.7517 15.1053 1160pM Fe,Midnight 6.1308475 2.41662 13.1981 High carbon,Dark 17.975345333333333 5.43258 29.2037 High carbon,Light 15.168293846153846 5.76542 26.8311 Low carbon,Dark 18.4996 18.4996 18.4996 Phloroglucinol 11.256780000000001 8.13114 15.3459 Silicon starvation,12h 16.0197 16.0197 16.0197