Galactocentric space velocity of I-type subpopulation in the M14 (M_WD, f = 1.4 M_⊙) population in the fiducial volume over distance D from Earth. Colours indicate the mass of the ejected object. Panel A: entire population. Panels B and C: only contain the UI and BI subpopulation respectively. Panel D: the same as panel A, except assuming τ_lifetime = 0.5 τ_{lifetime, bm}. Grey indicates (with no differentiation according to mass) the II-type subpopulation in panels A and D. Positions of the observed candidates in the parameter space are as indicated. The dashed line indicates D = 25 kpc (i.e. the parameter space left of the dashed line is equivalent to the fiducial volume as defined in Fig. 9).