Extended Data Fig. 6: Daily daytime average concentrations and smoothed average plots.
From: Chiral monoterpenes reveal forest emission mechanisms and drought responses

a, Isoprene and total monoterpenes. b, (−)-α-pinene, (+)-α-pinene, (−)-β-pinene and the total of the other monoterpenes. c, Daily night-time average concentrations of (−)-α-pinene, (+)-α-pinene, (−)-β-pinene and the total of the other monoterpenes. d, Calibrated (−)-α-pinene measurements (black) with smoothed daytime (red) and night-time (brown) trend lines. The smoothed lines were created by applying a Savitzky–Golay filter in conjunction with a moving-average filter, as described in the ‘Data management’ section.