Description

Zinc concentrations (ppb) at five background wells (eight samples for each well). Nondetects reported as <7.

Usage

Format

A data frame with 40 observations on the following 5 variables.

Zinc.orig

a character vector of original zinc concentrations (ppb)

Zinc

a numeric vector of zinc concentrations with <7 coded as 7

Censored

a logical vector indicating which observations are censored

Sample

a factor indicating the sample number

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.30.