[gmx-users] is there any tool for flexibility?

[Albert]

Hello:

  I've finished a MD with Gromacs and I found that the water molecules 
inside certain region of my protein is very flexible: the movement of 
them are very fast; in other region there are very stable. I am just 
wondering is there any tool in Gromacs can differentiate the water 
molecules' flexibility?

thank you very much
best
Albert