R Line plot

if (!require(ggplot2)) install.packages('ggplot2')
library(ggplot2)

....

ggplot(
  data = somedata,
  aes(x = mth, y = hours)
) +
xlab("Month") +
ylab("Hours") +
geom_line() +
geom_point() +
scale_x_date(
  date_breaks = "1 month",
  #  date_labels="%b-%Y"
)