... Model.”Journal of the American Statistical Association, 92, 103 3 104 0.Environmental Protection Agency (1970). The Clean Air Act (CAA); 42 U.S .C. s/s 7401 et seq.(1970) Clean Air Act and Amendments ... calculate a closed form estimate of the asymptotically exact covariance matrix of the linear component of a GAM (the air pollution coefficients). Furthermore, we developed the S package gam.exact, ... “Meta-analysis of time- series studies of air pollution and mortality: effects of gases and particles and the influence of cause of death, age, and season.”J Air Waste Manag Assoc., 52, 470–484.The...