Radiative efficiency (solid line) and unbound kinetic energy efficiency (dotted lines) as a function of time. The red lines are for A122Edd1, the cyan lines are for A90Edd1, and the blue lines are for A122R95Edd1. The kinetic energy efficiency might be larger than 1.0 because of conversion between kinetic energy and gravitational potential. In A90Edd1, there is also a transient phase (﹩0.17\gtrsim t^{\prime} \gtrsim 0.26﹩) with a high unbound kinetic energy efficiency, which corresponds to the time when the approaching stream is broken by the returning stream and the disrupted stream is marginally unbound and leaving the domain. We note that this transient high unbound rate is an artifact due to our domain setup.