Fig. 2From: 1H nuclear magnetic resonance-based metabolite profiling of guava leaf extract: an attempt to develop a prototype for standardization of plant extractsPCA plots for seasonal differentiation. a) PCA plot for seasonal data; b) OPLS-DA plot for season B and C; c) OPLS-DA plot for season C and D; d) OPLS-DA plot for season B and D. B: collection season May 2013; C: collection season October 2013; D: collection season March 2014Back to article page