SFR_norm vs. X-ray luminosity. SFR_norm values are estimated using the expression of Schreiber et al. (2015) to measure the SFRs of star-forming MS galaxies. SFR_norm and L_X are the median values of our binned measurements, in bins of L_X, with 0.5 dex width. The errors are calculated using bootstrap resampling by performing 100 resamplings with replacement at each bin. The results are colour-coded based on the redshift interval.