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