Extended Data Figure 4: The distribution of partial correlation coefficients between preseason temperature and leaf unfolding dates over the time period 1980–2013.
From: Declining global warming effects on the phenology of spring leaf unfolding

The mean (and s.d.) of the correlation coefficients across all species and sites are provided. The percentages of negative correlations and statistically significant negative correlations (Neg(Sig)) are also provided.