Fig. 4From: Effective cultivation of microalgae for biofuel production: a pilot-scale evaluation of a novel oleaginous microalga Graesiella sp. WBG-1Time evolution of biomass concentration (C biomass, open square), biomass productivity (P biomass, filled square), lipid content (C lipid, open triangle), lipid productivity (P lipid, filled triangle), and natural light intensity (I av) during the outdoor raceway cultivation (June 2013)Back to article page