Comparison of reddening curves derived for the same sightline. The symbols represent the reddening data from Gordon et al. (2009) shown as blue dots and by Fitzpatrick et al. (2019) in salmon, respectively. Reddening curves derived from UV spline fits (Eq. (5)) and interpolated in UBVJHK, –R_V are taken from Gordon et al. (2009), shown as blue, by Fitzpatrick & Massa (2007) in red, and by Valencic et al. (2004) by green lines. Non peculiar stars of the high-quality sample listed in Table 4 are shown as full lines with the others as dashed lines.