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EPA.09.Ex.17.6.sulfate.df: Sulfate Concentrations from Example 17-6 of 2009 USEPA Guidance Document

Description

Sulfate concentrations (ppm) collected over several years. The date of collection is simply indicated by month and year of collection. The column Date is a Date object where the day of the month has been arbitrarily set to 1.

Usage

EPA.09.Ex.17.6.sulfate.df

Arguments

Format

A data frame with 23 observations on the following 6 variables.

Sample.No

a numeric vector indicating the sample number

Year

a numeric vector indicating the year of collection

Month

a numeric vector indicating the month of collection

Sampling.Date

a numeric vector indicating the year and month of collection

Date

a Date object indicating the date of collection, where the day of the month is arbitrarily set to 1

Sulfate.ppm

a numeric vector of sulfate concentrations (ppm)