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EPA.09.Ex.16.1.sulfate.df: Sulfate Concentrations from Example 16-1 of 2009 USEPA Guidance Document

Description

Sulfate concentrations (ppm) at one background well and one downgradient well (eight quarterly measures at each well).

Usage

EPA.09.Ex.16.1.sulfate.df

Arguments

Format

A data frame with 16 observations on the following 4 variables.

Month

a factor indicating the month of collection

Year

a factor indicating the year of collection

Well.type

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

Sulfate.ppm

a numeric vector of sulfate concentrations (ppm)