Read weather data and format them for epirice.model
epirice.weather(working.year = NA, working.site = NA,
weather = weather_SouthAsia)
: year for the subset of weather data (default=NA : all the year)
: site for the subset of weather data (default=NA : all the site)
: weather table
data.frame with daily weather data for one or several site(s) and for one or several year(s)