Chloride concentrations (ppm) collected over a five-year period at a solid waste landfill.
EPA.09.Ex.17.5.chloride.df
A data frame with 19 observations on the following 4 variables.
Date
a Date object indicating the date of collection
Chloride.ppm
a numeric vector of chloride concentrations (ppm)
Elapsed.Days
a numeric vector indicating the number of days since January 1, 2002
Residuals
a numeric vector of residuals from a linear regression trend fit