Birthrates as a function of galactocentric radius and azimuths. Top left: Same as Fig. 3, the dashed lines correspond to the different azimuths considered. Top centre, right, and bottom: Birthrate as a function of galactocentric radius for three different age intervals at five different azimuths (as indicated in the panels). The colour scheme is the same as in Fig. 5. The thick lines correspond to the average birthrate, and the shaded areas correspond to the 16th and 84th percentiles.