Comparison between different methods to fit multicomponent galaxy models to the collapsed 2D MUSE i-band images. This plot only shows results for the parameter n_bar. The label best fit is the best fitting result using the Nelder-Mead simplex minimisation technique and a χ² fit statistic for minimisation. The label bootstrap gives the result of resampling the pixel values in the data image with 1000 iterations after the best fit. For time-saving reasons it uses the Levenberg-Marquardt minimisation algorithm. The red data points given in the plot indicate the median value of the 1000 fits; the error bars show the 0.16 and 0.84 quantiles. The label mcmc is the result of applying a MCMC analysis to the data image instead of searching for the best fit model. The data points in the plot indicate again the median value of the posterior distribution; the error bars show the 0.16 and 0.84 quantiles.