Time evolution of ﹩{\sigma }_{\mathrm{tan}}/{\sigma }_{\mathrm{rad}}-1﹩ measured for particles between 1.5 and 2 ﹩{r}_{{\rm{h}}}﹩ for the 2G (blue line) and the 1G (red line) populations (where ﹩{r}_{{\rm{h}}}﹩ is the projected half-mass radius). The green line in the inset shows the time evolution of the ratio of the 2G to the 1G tangential velocity dispersion, while the black line is for the ratio of the 2G to the 1G radial velocity dispersion (both measured between 1.5 and 2 ﹩{r}_{{\rm{h}}}﹩). Time is normalized to the initial half-mass relaxation time (calculated using the projected half-mass radius).