Thirteen sites in the Great Lakes were selected for a study to quantify PCB 
concentrations in 1982 and 1996 (Hughes et al. 1998). At each site 9-13 American 
herring gull (Larus smithsonianus) eggs were randomly collected and tested for PCB content.

datasets

Contains functions from: Aho, K. (2014) Foundational and Applied Statistics for Biologists using R.  CRC/Taylor and Francis, Boca Raton, FL, ISBN: 978-1-4398-7338-0.

Ken Aho

asbio

A Collection of Statistical Tools for Biologists

PCB function

A data frame with 26 observations on the following 3 variables.<dl>
 <dt><code>nest</code></dt>
<dd>Nest number</dd> <dt><code>level</code></dt>
<dd>PCB levels microgram/gram of dry weight</dd> <dt><code>year</code></dt>
<dd>a numeric vector</dd>
</dl>

Format

PCBs and herring egg thickness — PCB

A data frame with 26 observations on the following 3 variables.<dl>
 <dt><code>nest</code></dt>
<dd>Nest number</dd>

 <dt><code>level</code></dt>
<dd>PCB levels microgram/gram of dry weight</dd>

 <dt><code>year</code></dt>
<dd>a numeric vector</dd>


</dl>

PCB: PCBs and herring egg thickness

Description

Usage

Arguments

Format

References