“…The R code is available upon request to the corresponding author. The analyses were performed in R Programming Language (R Core Team, 2018) using the R packages devtools , forecast (Hyndman and Khandakar, 2008;, fracdiff (Fraley et al, 2012), gdata (Warnes et al, 2017), ggplot2 (Wickham, 2016;Wickham and Chang, 2016), HKprocess (Tyralis, 2016), knitr (Xie, 2014(Xie, , 2015(Xie, , 2018, lubridate (Grolemund and Wickham, 2011;Spinu et al, 2018), maps (Brownrigg et al, 2018), prophet (Taylor and Letham, 2017), readr (Wickham et al, 2017), rmarkdown (Allaire et al, 2018), stringi (Gagolewski, 2018), zoo (Zeileis and Grothendieck, 2005;Zeileis et al, 2018).…”