Benzene concentrations (ppb) at six background wells
(six monthly samples for each well). Nondetects reported as <2.
EPA.92c.benzene1.dfA data frame with 36 observations on the following 5 variables.
Benzene.origa character vector of original benzene concentrations (ppb)
Benzenea numeric vector of benzene concentrations with <2 coded as 2
Censoreda logical vector indicating which observations are censored
Montha factor indicating the month of collection
Wella factor indicating the well number