Sérsic index as a function of the specific Star Formation Rate (sSFR) in four redshift bins. Each color represents a stellar mass bin with solid lines showing spline-quantile regression and squares showing the median Sérsic index in sSFR bins. Error bars show the statistical uncertainty on the median ($\sigma /\sqrt{N}$). We highlight the $\frac{1}{t_H(z)}$ values between the two redshift extremes as a gray-shaded area and as a dotted line the position at the median redshift. Systematic differences in n_0.5 μm (left) and n_1.5 μm (right) due to stellar mass appear at z ≤ 1 independently on the wavelength observed.