Distribution of RGB stars within the SMC (top-left) and the LMC (top-right) with superimposed annular rings of breakpoints marked in the corresponding lower panels. The plots show the metallicity gradients for the SMC (bottom-left) and LMC RGB stars (bottom-right). The median metallicities of the annular bins are marked with pink stars along with their standard errors. Linear best-fits are marked with green and the piecewise-regression fits are marked with grey. The black vertical lines show the division of different segments or the location of the breaks in the gradient. In both panels, a Hess diagram shows the density distribution of the sources colour-coded such that blue shows the regions with the highest stellar density.