Imports on-time Data directly from BTS/RITA/Transtats website raw data (prezipped file), for SKYNET's import function.
Details
Files can be found here https://www.transtats.bts.gov/Fields.asp?gnoyr_VQ=FGJ. More information on variables to select and type of files to use can be found here
Examples
if (FALSE) { # \dontrun{
import_ontime(skynet_example("Ontime_2011_1.csv"))
} # }