Table 4 Statistics for generalized additive models (GAM) of net and gross primary production (NPP, GPP) in Chesapeake Bay using predictor variables (Table 3) as detailed for gam2 (Table 5). GCV = generalized cross-validation score; AIC = Akaike information criterion; RMSE = root mean square error.

From: Seasonal to Inter-Annual Variability of Primary Production in Chesapeake Bay: Prospects to Reverse Eutrophication and Change Trophic Classification