A rezas crystallization depends on the time it takes for layers of its chains to fold and orient themselves in the same direction. This time increases with a molecules weight and branching. The table below shows that the growth rate is higher for Sclair 14B.1 than Sclair 2907 (20%), where 2907 is less highly branched than 14B.1. Here Gc is the crystal growth rate, or how quickly it orders itself depending on the layers, and t is the time it takes to order.