Abundance ratio [F/O] as a function of [O/H] in the solar neighborhood for the one-infall chemical evolution model adopting various prescriptions for the channels of fluorine production. The model F6, in which only the contribution for fluorine production is given by W-R stars, is indicated with the brown line. Model F7, in which we adopted the Romano et al. (2010) yield including W-R stars by Meynet & Arnould (2000), is shown with the red line. Model F8 (the same as model F7, but with the W-R fluorine yields multiplied by 2; see Table 1) is shown with the black line. Finally, models F9 (the same as model F7, but with the AGB fluorine yields multiplied by 2; see Table 1) is labeled with the magenta line. Observational data of Jönsson et al. (2017a) are indicated with cyan circles.