Mapped the main effect and interaction indeces selected by glinternet back to their variable names.

Also removed dewpoint_temp_c, rel_humidity_pct, wind_speed_kph, and visibility_km from explanatory variables as well as reduced the number of past hours temperature information from 8 to 6. Those variables and their interactions were being selected but I can not provide any reasonable interpretation of results. I wish to perform an analysis without them to see if it affects MAPE much (currently 6.9%).