Galaxy mass versus pitch angle. We plot the total stellar mass (upper row), dynamical mass (central row), and halo-to-stellar mass ratio (lower row) versus the mean pitch angle (left column), mean weighted by the arc length of the arms (central column), and mean of the innermost logarithmic segments (right column). Different colours and symbols represent different types of spirals, as indicated in the legend of the upper left panel (as in Fig. 14).