EPA.09.Ex.11.1.arsenic.df: Arsenic Concentrations from Example 11-1 of 2009 USEPA Guidance Document
Description
Arsenic concentrations (ppb) at six wells (four observations per well).
Usage
EPA.09.Ex.11.1.arsenic.df
Format
A data frame with 24 observations on the following 3 variables.
Arsenic.ppb
a numeric vector of arsenic concentrations (ppb)
Month
a factor indicating the month of collection
Well
a factor indicating the well number