The overall goal here is simply to examine how household energy usage varies over a 2-day period in February, 2007. We reconstruct the following plots below, all of which were constructed using the base plotting system.
For each plot you should
All PNG files have a width of 480 pixels and a height of 480 pixels. Name each of the plot files as πππππ·.πππ, πππππΈ.πππ, ππππ3.πππ, ππππ4.πππ. A separate R code file (πππππ·.π, πππππΈ.π, etc.) that constructs the corresponding plot is construct, i.e. code in πππππ·.π constructs the πππππ·.πππ plot.