Added R files to create plots, and their associated .png output files.
 	Added R files to create plots, and their associated .png output files.
 	Added R files to create plots, and their associated .png output files.
 	Added R files to create plots, and their associated .png output files.
 	Added R files to create plots, and their associated .png output files.
 	Added R files to create plots, and their associated .png output files.
 	Added R files to create plots, and their associated .png output files.