Analysis of correlation function for Kail at Shangla; correlation coefficient (r) between monthly meteorological variable and TRW for the current year (capital letters) and the previous year (lower case). Stick bars represent statistically significant associations (p<0.05) (Sohar et al., 2017). The common era (1921-2021) was used to compute correlations between June of the year before tree-ring growth and October of the current growth year (Ahmed et al., 2010).