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EPA.09.Ex.18.2.chrysene.df: Chrysene Concentrations from Example 18-2 of 2009 USEPA Guidance Document

Description

Chrysene concentrations (ppb) at two background wells and one compliance well (four monthly measures at each well).

Usage

EPA.09.Ex.18.2.chrysene.df

Arguments

Format

A data frame with 12 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)

Chrysene.ppb

a numeric vector of chrysene concentrations (ppb)