Local star-formation density from radio and Ha data
Local star formation density (zero-point of Madau diagram) in Msun/yr/Mpc3 :
Ha: 0.013 +/-0.006 (Gallego et al. 1995)
Radio: 0.022 +/-0.004 (Sadler et al. 2002)
Radio data show more galaxies with very high SFR (> 30 Msun/yr), otherwise very good agreement.