The files P18_11 Temp.txt, P18_11 Precip.txt, and P18_11 Drought.txt contain monthly data on temperature, precipitation, and drought for various states and regions in the U.S. The file P18_11 Description. txt describes the data. In particular, it indicates that each of the data files is fixed width, and it indicates the precise file format (which data are in which columns). Import each of the data files into Excel. Then combine the three worksheets into a single Excel (.xlsx) file, with one sheet for temperature, one for precipitation, and one for drought?