Extended Data Fig. 1: Correlations between measured compounds.
From: Chiral monoterpenes reveal forest emission mechanisms and drought responses
a,b, Correlation matrix for the measured atmospheric concentrations of monoterpenes. a, Pre-drought. b, Severe drought. Colours denote strength and direction of the correlation. Correlations are based on Pearson’s correlation coefficient. c,d, Correlations of (+)-α-pinene and (−)-α-pinene during each stage of drought. c, Daytime correlation. d, Night-time correlation. Data are more correlated during night-time, indicating that the source of the emissions is more similar than the daytime sources.
