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EnvStats (version 3.0.0)

EPA.92c.zinc.df: Zinc Concentrations from 1992 USEPA Guidance Document

Description

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

Usage

EPA.92c.zinc.df

Arguments

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