Mass outflow rates Ṁ_out as function of SFR for the secure outflow candidates (red circle) and possible outflow candidates (orange star) from PHANGS as well as the outflows compiled by Fluetsch et al. (2019) (blue diamond, blue errorbar). The gray line corresponds to a mass loading factor η of unity. PHANGS SFRs have an uncertainty of 0.11 dex and the mass outflow rates have statistical uncertainties of 0.2 dex when perturbing the radius the outflow mass is determined over, with a larger total uncertainty estimated to be ∼1 dex given the unknown actual outflow geometries and properties.