Snowpacks contain a wide spectrum of pollutants that may represent environmental hazards. The article “Atmospheric PAH Deposition: Deposition Velocities and Washout Ratios” (J. of Environmental Engineering, 2002: 186–195)

focused on the deposition of polyaromatic hydrocarbons.

The authors proposed a multiple regression model for relating deposition over a specified time period (y, in mg/m2

) to two rather complicated predictors x1 (mg-sec/m3

) and x2

(mg/m2

), defined in terms of PAH air concentrations for various species, total time, and total amount of precipitation.

Here is data on the species fluoranthene and corresponding Minitab output: