Comparison of a Gaussian comb with 20, 30, and 40 components fitted to a pre-calibrated histogram with bin width Δz = 0.05. The width σ_comb of the Gaussians is equal to the separation between each component. Data points are shown in black, with error bars corresponding to the diagonal elements of the covariance matrix. Blue, orange, and green lines represent the Gaussian combs with 20, 30, and 40 components, respectively. We note that when fitting the redshift distribution, the full covariance matrix of the data histogram is taken into account.