Location of the CL1301 (grey) and ALMA (green squares) galaxies in the M_star–SFR plane. The galaxies with only upper limits in CO are identified with a cross. Squares with pink borders show the low-μ_H2 galaxies, see Sect. 4.1. Galaxies in black and grey are the spectroscopic and photometric samples, respectively, at the redshift of CL1301.7−1139. For comparison, the light green circles show the CL1411.1−1148 ALMA galaxies. The dashed black line is the Speagle et al. (2014) MS, corrected for a Chabrier IMF at z = 0.4828, with the corresponding ±0.3 dex scatter being the grey shaded area.