AMR for the three observed regions, with the top, central, and bottom panels representing the LMC-side, central, and SMC-side regions, respectively. Each point corresponds to the mean metallicity within an age bin, with horizontal error bars showing the bin width. The black diamonds and orange hexagons indicate spectroscopic measurements for the SMC (Carrera et al. 2008a) and LMC (Carrera et al. 2008b), respectively.