Write the surface SS () function that creates plots such as those in Figure 1.10. This function takes 3 arguments: data for the offline summary data frame, mac, and angle. The parameters mac and angle are used to specify which MAC address and angle are to be selected from the data for smoothing and plotting.
![1607_5ca3cbfc-0796-4f33-b2a4-bffc48d6e916.png](https://secure.tutorsglobe.com/CMSImages/1607_5ca3cbfc-0796-4f33-b2a4-bffc48d6e916.png)