EPA.92c.nickel1.df:
Nickel Concentrations from 1992 USEPA Guidance Document
Description
Nickel concentrations (ppb) at four monitoring wells (five monthly samples for each well).
Format
A data frame with 20 observations on the following 3 variables.
Nickel
- a numeric vector of nickel concentrations (ppb)
Month
- a factor indicating the month of collection
Well
- a factor indicating the well number
Source
USEPA. (1992c). Statistical Analysis of Ground-Water Monitoring Data at RCRA Facilities: Addendum to Interim Final Guidance. Office of Solid Waste, U.S. Environmental Protection Agency, Washington, D.C. p.7.