condition mean min max 12pM Fe,Midday 0.360829 0.360829 0.360829 12pM Fe,Midnight 1.618455 1.11051 2.1264 58pM Fe,Midday 0.106426 0.106426 0.106426 58pM Fe,Midnight 1.4017371428571428 0.0 2.02952 233pM Fe,Midnight 0.727098 0.67414 0.761565 1160pM Fe,Midday 0.41627057142857143 0.189167 0.83163 1160pM Fe,Midnight 1.2876628333333333 0.556175 2.2672 High carbon,Dark 0.7534249333333334 0.25388 1.39462 High carbon,Light 0.37702953846153847 0.0 1.94558 Low carbon,Dark 0.390889 0.390889 0.390889 Phloroglucinol 0.882945 0.829051 0.983332 Silicon starvation,12h 0.273734 0.273734 0.273734