EnvStats (version 2.4.0)

EPA.09.Ex.16.4.copper.df: Copper Concentrations from Example 16-4 of 2009 USEPA Guidance Document

Description

Copper concentrations (ppb) at two background wells and one compliance well (six measures at each well).

Usage

EPA.09.Ex.16.4.copper.df

Arguments

Format

A data frame with 18 observations on the following 4 variables.

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)

Copper.ppb

a numeric vector of copper concentrations (ppb)