EPA.09.Ex.18.4.xylene.df

Xylene concentrations (ppb) at three background wells and one compliance well. Eight 
 monthly measures at each complaince well; three monthly measures at the compliance well.

datasets

Graphical and statistical analyses of environmental data, with
focus on analyzing chemical concentrations and physical parameters, usually in
the context of mandated environmental monitoring. Major environmental
statistical methods found in the literature and regulatory guidance documents,
with extensive help that explains what these methods do, how to use them,
and where to find them in the literature. Numerous built-in data sets from
regulatory guidance documents and environmental statistics literature. Includes
scripts reproducing analyses presented in the book "EnvStats: An R Package for
Environmental Statistics" (Millard, 2013, Springer, ISBN 978-1-4614-8455-4,
<doi:10.1007/978-1-4614-8456-1>).

Alexander Kowarik

EnvStats

Package for Environmental Statistics, Including US EPA Guidance

Steven P. Millard

EPA.09.Ex.18.4.xylene.df function

A data frame with 32 observations on the following 6 variables.<dl>
 <dt><code>Month</code></dt>
<dd>a factor indicating the month of collection</dd> <dt><code>Well</code></dt>
<dd>a factor indicating the well number</dd> <dt><code>Well.type</code></dt>
<dd>a factor indicating the well type (background vs. compliance)</dd> <dt><code>Xylene.ppb.orig</code></dt>
<dd>a character vector of original xylene concentrations (ppb)</dd> <dt><code>Xylene.ppb</code></dt>
<dd>a numeric vector of xylene concentrations (ppb) with nondetects set to their detection limit</dd> <dt><code>Censored</code></dt>
<dd>a logical vector indicating which observations are censored</dd> 
</dl>

Format

Xylene Concentrations from Example 18-4 of 2009 USEPA Guidance Document — EPA.09.Ex.18.4.xylene.df

A data frame with 32 observations on the following 6 variables.<dl>
 <dt><code>Month</code></dt>
<dd>a factor indicating the month of collection</dd>

 <dt><code>Well</code></dt>
<dd>a factor indicating the well number</dd>

 <dt><code>Well.type</code></dt>
<dd>a factor indicating the well type (background vs. compliance)</dd>

 <dt><code>Xylene.ppb.orig</code></dt>
<dd>a character vector of original xylene concentrations (ppb)</dd>

 <dt><code>Xylene.ppb</code></dt>
<dd>a numeric vector of xylene concentrations (ppb) with nondetects set to their detection limit</dd>

 <dt><code>Censored</code></dt>
<dd>a logical vector indicating which observations are censored</dd>

 
</dl>

EPA.09.Ex.18.4.xylene.df: Xylene Concentrations from Example 18-4 of 2009 USEPA Guidance Document

Description

Usage

Arguments

Format