1. Print the first 5 observations of the data after getting rid of missing values. 2. Create a simple bar plot for zone level, assign a title of the graph as "Ozone", assign border color of blue. 3. Calculate a complex mean Ozone level for each month and make a bar plot. a. Tabulate variable Month b. Use function tapply() to generate mean ozone level for each month C. Generate a bar plot for monthly mean ozone levels. d. Assign the title of the bar plot as "Ozone level by Month" e. Label x axis as "Month" f. g. An additional 10 points will be awarded if you can use the rich color from RColorBrewer package. h. Add the value of May, June, July, August, September to the x axis. Label y axis as "Mean Ozone Level" Use rainbow color or heat colors for the bars 4. Calculate mean Temperature level (variable Temp) and ozone level for each month and make a side-by-side bar plot. a. b. c. d. e. Use function tapply() to generate mean Temp level for each month Generate a side-by-side bar plot for monthly mean ozone levels