Molecular outflow rate as a function of SFR for galaxies with detected molecular outflows. The range and average of best-fit outflow rates of SPT 0346-52 for three possible shell widths are shown, assuming z_CO and SFR_SED = (3.6 ± 0.3)×10³ M_⊙ year⁻¹ (Ma et al. 2015). The molecular outflow detected in this work is in the most powerful starburst. Additional data include both low-redshift sources (Fluetsch et al. 2019) and the higher-redshift galaxies XID2028 (z = 1.593; Brusa et al. 2018), SMM J2135 (z = 2.326; George et al. 2014), zC400528 (z = 2.387; Herrera-Camus et al. 2019), APM08279+5255 (z = 3.912; Feruglio et al. 2017), and SPT2319-55 (z = 5.293; Spilker et al. 2018). A representative uncertainty for all low-redshift sources (±0.3 dex) is shown for one such source. Outflows driven by AGNs are shown by diamonds, while those driven by starbursts are shown by star symbols. Each object is coloured according to its redshift.