Tetrachloroethylene (PCE) concentrations (ppb) at one background well and one compliance well.
EPA.09.Ex.16.5.PCE.df
A data frame with 14 observations on the following 4 variables.
Well.type
a factor with levels Background
Compliance
PCE.Orig.ppb
a character vector of original PCE concentrations (ppb)
PCE.ppb
a numeric vector of PCE concentrations (ppb) with nondetects set to their detection limit
Censored
a logical vector indicating which observations are censored