Left: R.A.–decl. and PMRA–PMDec spaces for Mon R2 member stars that are not clustered (black) and associated with the three subcluster regions (red, green, blue). Subclusters are chosen by grouping within equal area 0.5 × 0.5 deg regions, centered at coordinates provided in Table 3. Right: density distribution for proper motions and parallax of the three clusters (red, green, blue curves) compared with those for all member stars (black dotted curves).