Ages of the 1.1 μm–selected star clusters as a function of their P.A. within the circumnuclear ring. The P.A. is measured so that north is ﹩0^{\circ }﹩ and east is ﹩90^{\circ }﹩. The shaded regions indicate the locations of the MIR/radio (see Fig. 9) peaks tracing the youngest stars (≲6–8 Myr) in the SF ring.