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EPA.09.Ex.17.1.loglead.df: Log-transformed Lead Concentrations from Example 17-1 of 2009 USEPA Guidance Document

Description

Log-transformed lead concentrations (ppb) at two background and four compliance wells (four quarterly measures at each well).

Usage

EPA.09.Ex.17.1.loglead.df

Arguments

Format

A data frame with 24 observations on the following 4 variables.

Month

a factor indicating the month of collection; 1 = Jan, 2 = Apr, 3 = Jul, 4 = Oct

Well

a factor indicating the well number

Well.type

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

LogLead

a numeric vector of log-transformed lead concentrations (ppb)