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EPA.89b.benzene.df: Benzene Concentrations from 1989 USEPA Guidance Document

Description

Benzene concentrations (ppm) at one background and five compliance wells (four monthly samples for each well).

Usage

EPA.89b.benzene.df

Arguments

Format

A data frame with 24 observations on the following 6 variables.

Benzene.orig

a character vector of the original observations

Benzene

a numeric vector with <1 observations coded as 1

Censored

a logical vector indicating which observations are censored

Month

a factor indicating the month of collection

Well

a factor indicating the well number

Well.type

a factor indicating the well type (background vs. compliance)