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EPA.92c.arsenic3.df: Arsenic Concentrations from 1992 USEPA Guidance Document

Description

Arsenic concentrations at one background and one compliance monitoring well. Three years of observations for background well, two years of observations for compliance well, four samples per year for each well.

Usage

EPA.92c.arsenic3.df

Arguments

Format

A data frame with 20 observations on the following 3 variables.

Arsenic

a numeric vector of arsenic concentrations

Year

a factor indicating the year of collection

Well.type

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