Question $1\mathrm{.}5$: Using the phoenix table, create an overlaid line plot of the average maximum temperature and average minimum temperature for each year between $1900$ and $2020($inclusive$).$

Hint: To draw a line plot with more than one line, call plot on the column label of the $\backslash ($ x $\backslash )-$axis values and all other columns will be treated as $\backslash ($ y $\backslash )-$axis values. Use the select method to select the necessary columns, use the group method to get the average maximum temperature and the average minimum temperature, and use the where method to get the years.