Redshift and M_* evolution of the sSFR for SFG. The circles represent the Lockman-SpReSO galaxies, colour-coded by M_*. The MS defined by Popesso et al. (2023) is shown in magenta for the mean M_* and in blue, red and brown for log M_* (M_⊙) set to 9, 10, and 11, respectively. The black line is the MS defined by Elbaz et al. (2011) for IR galaxies, assuming independence with M_*. The grey shaded region marks the area above which the galaxies are classified as starbursts. The Lockman sample tends to populate this region regardless of the MS used. The galaxies from Oi et al. (2017), shown as red triangles, follow the behaviour of the Lockman-SpReSO objects.