Relations between the bar pattern speed Ω_bar and the Hubble type, SDSS r-band absolute magnitude M_r, bar radius R_bar, and bar strength S_bar for the selected sample of 77 galaxies. The Spearman rank correlation r, two-sided significance p, and number of σ from the null hypothesis are given in each panel. The points are colour-coded according to the value of ℛ. Results obtained using different bands with respect to the SDSS r-band are represented with a square symbol. The mean value of Ω_bar for each bin of Hubble type is shown (black filled stars). The results for the Milky Way are shown both for the short bar case (black open diamond) and long bar case (black open square).