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Average values of CO2, vapour pressure deficit (VPD) and temperature (T) for the understory and the canopy over the different phases of the measurement campaign
a, Whole-day averages. b, Daytime averages. The uncertainties on the CO2 values are 95% confidence intervals for the daily mean values for each drought stage. The uncertainties for the VPD and temperature are the 95% confidence intervals for the midday (11:00–15:00 local time) maximum for each drought stage.
