Average temperature in months is the main climate factor that influence the resin yield ability intensively, but rain fall and relatively humidity influence less.

在气候因子中，月均温是影响产脂量的主要因素，而相对湿度和降水量则对产脂量影响不大；

youdao

Right now the focus is on humidity, temperature and barometric pressure, though other environmental variables would be relatively trivial to tack on.

ENGADGET