Benzene concentrations (ppb) collected at a landfill that previously handled smelter waste and is now undergoing remediation efforts.
EPA.09.Ex.21.2.benzene.dfA data frame with 8 observations on the following 4 variables.
Montha numeric vector indicating the month of collection
Benzene.ppb.origa character vector of original benzene concentrations (ppb)
Benzene.ppba numeric vector of benzene concentrations (ppb) with nondetects set to their detection limit
Censoreda logical vector indicating which observations are censored