Distributions of fitted parameters. The top panels show the histograms of the optimized ϒ _disk (top left) and ϒ_bulge (top right). The vertical dashed lines represent the values of 0.5 (disk) and 0.7 (bulge) adopted in McGaugh et al. (2016). In the bottom panels, the optimal galaxy distance (bottom left) and disk inclination (bottom right) are plotted against their original values. The dashed line is the line of unity. Different methods of measuring distance are indicated by different colors. Large and small symbols correspond to data with an accuracy higher and lower than 15% for distance and 5% for inclination, respectively, based on observational errors as tabulated in SPARC. Crosses indicate galaxies with the low-quality rotation curves (Q = 3, see Lelli et al. 2016a). A few other outliers are discussed in the text.