Mass-amplitude relation obtained in the ∼1h case, accounting for the full covariance in each amplitude and redshift interval. We compare our results (red data points) with those by Bellagamba et al. (2019) (black data points). The error bars show the 18th and 82nd percentiles of the posterior distributions. The blue solid line shows the scaling relation recovered by Bellagamba et al. (2019); the orange solid line exhibits our best-fit result.