sSFR as a function of stellar mass for the SS, HI-FR and the xCOLDGASS sample. The sSFR of the SS galaxies is adjusted to z = 0 according Speagle et al. (2014) as explained in Sect. 4.1. The full yellow line denotes the SFMS from Janowiecki et al. (2020), derived for the xCOLDGASS sample, and the dashed yellow line shows its 1σ scatter. The dotted yellow line show a distance of 0.3 dex from the SFMS which is adopted, following Janowiecki et al. (2020), to define SFMS galaxies.