Best-fit modeled parameters to the dust environment of 81P/Wild 2 Afρ data and images (Figs. 4 and 5). All parameters are given as a function of the heliocentric distance. From top to bottom and left to right the panels are a) dust production rate [kg s^-1]; b) ejection velocities of 1-cm particles [m s^-1]; c) maximum size of particles [cm]; d) power index of the size distribution, δ. The solid red line corresponds to pre-perihelion and the dashed blue line to post-perihelion.