Age as function of NIR heliocentric distance (top panel) and of galactocentric distance R_G (bottom panel) for our sample. Also show are the age error bars, even if not all clusters have error bars in their ages in Table 2. However, the lower limit given in Table 2 is adopted as the lower error, and the higher limit of 13 Gyr, the typical age of old Galactic GCs, is adopted as the higher error. The age error is thus the difference between our age estimates and 13 Gyr.