Table 15. Estimates of silver hake biological reference points for combined, northern, and southern stock areas from the Northern Demersal Working Groups preferred Bayesian surplus production models. Table entries are biomass in 1999 (B₁₉₉₉, kt), biomass that would produce maximum surplus production (B_MSP, kt), maximum surplus production (MSP, kt), exploitation rate to produce maximum surplus production at B_MSP (H_MSP, fraction of stock biomass), and ratio of exploitation rate in 1999 to H_MSP (H_Ratio , fraction of H_MSP). Northern and southern area values do not sum to combined area values because the input data are not additive and the analytical models are nonlinear.