CRN.DAILY.URL           URL of the daily data collection
CRN.HOURLY.URL          URL of the hourly data collection
DAILY_DIR               Directory for downloaded files of daily data
HOURLY_DIR              Directory for Hourly data
HOURS                   Collection of hours in a day. A chron object
collateDaily            collates individual daily files for multiple
                        stations
collateHourly           collates individual hourly files for multiple
                        stations
colnamesDaily           column names for the daily data files
colnamesHourly          column names for the hourly data files
crn-package             Climate Reference Network datatools
downloadCRN             A function to download all the CRN files
writeDataset            Create and save to disk a single variable
                        dataset
