Chlordane concentrations (ppb) at one background and one compliance well. Observations taken during four separate months over two years. Four replicates taken for each “month/year/well type” combination.
data(EPA.89b.chlordane2.df)
A data frame with 32 observations on the following 5 variables.
Chlordane
Chlordane concentration (ppb)
Month
a factor indicating the month of collection
Year
a numeric vector indicating the year of collection (85 or 86)
Replicate
a factor indicating the replicate number
Well.type
a factor indicating the well type (background vs. compliance)