condition mean min max 12pM Fe,Midday 0.221618 0.221618 0.221618 12pM Fe,Midnight 0.9156595 0.909422 0.921897 58pM Fe,Midday 0.196098 0.196098 0.196098 58pM Fe,Midnight 0.33228214285714286 0.0 0.685144 233pM Fe,Midnight 5.723133333333333 4.91134 6.76284 1160pM Fe,Midday 0.0 0.0 0.0 1160pM Fe,Midnight 0.17546858333333332 0.0 0.514994 High carbon,Dark 116.5305 22.8313 164.073 High carbon,Light 54.91255384615384 17.8585 145.321 Low carbon,Dark 8.28279 8.28279 8.28279 Phloroglucinol 0.34505566666666665 0.0 0.754944 Silicon starvation,12h 0.126094 0.126094 0.126094