Top: local radio and IR LF at 1.4 GHz from various authors as indicated in the legend. Red and orange lines correspond to IR data while all other lines are derived from radio data. Best et al. (2005) did not attempt to fit an analytical form so we show their points as asterisks. Functional forms are either broken power law (orange), hyperbolic form (cyan and purple), or power law plus lognormal (green, blue, and red). Bottom: LFs converted to SFRD per logarithm of luminosity using Eq. (13) and a local q_TIR = 2.64 value from Bell (2003).