EPA.94b.tccb.df

1,2,3,4-Tetrachlorobenzene (TcCB) concentrations (ppb) in soil samples at a 
 reference area and a cleanup area. There are 47 observations for the reference area 
 and 77 for the cleanup area. There is only one nondetect in the dataset (it's in the 
 cleanup area), and it is reported as <code>ND</code>. Here it is assumed the nondetect is 
 less than the smallest reported value, which is 0.09 ppb. Note that on page 6.23 of 
 USEPA (1994b), a value of 25.5 for the Cleanup Unit was erroneously omitted.

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,
<https://link.springer.com/book/10.1007/978-1-4614-8456-1>).

Alexander Kowarik

EnvStats

Package for Environmental Statistics, Including US EPA Guidance

Steven P. Millard

EPA.94b.tccb.df function

A data frame with 124 observations on the following 4 variables.<dl>
 <dt><code>TcCB.orig</code></dt>
<dd>a character vector with the original tetrachlorobenzene concentrations (ppb)</dd> <dt><code>TcCB</code></dt>
<dd>a numeric vector of tetrachlorobenzene with <code>&lt;0.99</code> coded as <code>0.99</code></dd> <dt><code>Censored</code></dt>
<dd>a logical vector indicating which observations are censored</dd> <dt><code>Area</code></dt>
<dd>a factor indicating the area (cleanup vs. reference)</dd> 
</dl>

Format

1,2,3,4-Tetrachlorobenzene Concentrations from 1994 USEPA Guidance Document — EPA.94b.tccb.df

A data frame with 124 observations on the following 4 variables.<dl>
 <dt><code>TcCB.orig</code></dt>
<dd>a character vector with the original tetrachlorobenzene concentrations (ppb)</dd>

 <dt><code>TcCB</code></dt>
<dd>a numeric vector of tetrachlorobenzene with <code>&lt;0.99</code> coded as <code>0.99</code></dd>

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

 <dt><code>Area</code></dt>
<dd>a factor indicating the area (cleanup vs. reference)</dd>

 
</dl>

EPA.94b.tccb.df: 1,2,3,4-Tetrachlorobenzene Concentrations from 1994 USEPA Guidance Document

Description

Usage

Arguments

Format