The logarithm of the surface density (deg⁻²) against the logarithm of the flux density (Jy) of low-frequency transient surveys. We do not consider variable source limits. The surface densities for which transients have been detected are marked with a T. The surveys included are as follows: Hyman et al. (2005, 2006, 2009) (Hym2009); Lazio et al. (2010) (Laz2010); Jaeger et al. (2012) (Jae2012); Bell et al. (2014) (Bel2014); Obenberger et al. (2014a) (Obe2014); Carbone et al. (2015) (Car2015) and Cendes et al. (2015) (Cen2015).