Results of the MC-SPF fitting for region 2. Upper panel: FORS2 spectrum (black) and best fit model (dark red). Regions where the spectrum is plotted in grey are not used in the fit. The fit residuals (Data – Model) are shown below the spectrum and the grey shaded area shows the 1σ uncertainties. Lower left panel: photometric data points in black (1σ upper limits from non-detections are shown as error bars). The blue lines are the stellar emission with nebular lines from the young component (Age < 10Myr), the red lines are from the old component (Age > 10Myr), and the dark red lines are the total model including the dust emission. Different lines are obtained by randomly sampling the posterior distribution. Lower middle panel: reconstructed SFH from the fitting procedure. Different lines are obtained from the posterior distribution. The grey dashed line showsthe evolution of the unperturbed SFH. Lower right panel: marginalised likelihood maps for the Q_Age and τ_Q fit parameters. The red lines show the median value for each parameter, while the black contours show the 1–3 σ confidence intervals.