where Γ is the typical gamma function. Requisite data with sufficient temporal resolution to capture the dynamics of water rotation is gathered with short 500 ps simulations in the microcanonical ensemble with coordinates output every 0.5 ps, following the longer equilibrium production trajectories. We note that Eq. ( ) only conditions that the water molecule is initially present in L 1 and not necessarily that it remains in L 1 . Therefore, it is possible that some amount of decorrelation arises after a water has diffused from the interface.