Kinetic energy (KE) of the GCs from Vasiliev (2019) (crosses with red error bars) compared to the blue and green thick lines that indicate the potential energy (PE, absolute values) expected from the most likely and the heaviest Einasto model when associated to Model I for baryons, respectively. Error bars have been estimated with Monte Carlo randomly sampling by considering the errors in distance and radial velocity, as well as errors in proper motion and their covariance. The (small) thickness of the potential lines is due to the presence of the axisymmetric disk component.