Number counts at 150, 220, and 280 GHz for synchrotron and dusty source populations. In the case of synchrotron sources we include available ACTPol (Datta et al. 2019), ACT equatorial (Gralla et al. 2020), Planck (Planck Collaboration VII 2013), and SPT (Everett et al. 2020) number counts, and models from Lagache et al. (2020) and Bonato et al. (2019). For dusty sources we include ACT equatorial and SPT results, and models from Béthermin et al. (2011, 2012) and Cai et al. (2013). For 280 GHz we also include results from Scott et al. (2012) at 1.1 mm (273 GHz) and Bing et al. (2023) at 1.2 mm (255 GHz) scaled to 277 GHz using α = 2.5.