The asymmetric drift for the RAVE dwarfs separated into three metallicity bins: −0.5 <  [M/H]  < −0.2, −0.2 <  [M/H]  < 0, and 0 <  [M/H]  < 0.2. The two black circles on the y-axis correspond to the LSR from Aumer & Binney (2009) and from Schönrich et al. (2010). The full lines show the best joint linear fit. Top: using Eq. (4). Bottom: using Eq. (5). The RAVE data without metallicity split of Fig. 4 are replotted with grey points.