The dowjones data frame has 1304 rows and 2 columns.
  The second column contains daily closing prices of the Dow
  Jones Index over the period 1996 to 2000. The first column
  contains a POSIXct object giving the dates of
  each observation.
data(dowjones)This data frame contains the following columns:
A POSIXct object containing dates.
A numeric vector containing daily closing prices of the Dow Jones Index.