ใช้ facet เพื่อสำรวจข้อมูลที่หายไป

# Explore the missingness in wind and air temperature, and display the 
# missingness using `geom_miss_point()`. Facet by year to explore this further.
ggplot(___,
       aes(x = ___,
           y = ___)) + 
  ___() + 
  facet_wrap(~year)

# Explore the missingness in humidity and air temperature, and display the 
# missingness using `geom_miss_point()` Facet by year to explore this further.
ggplot(___,
       aes(___,
           ___)) + 
  ____() + 
  facet_wrap(~year)