what the denisty and viscosity values in MeshGraphNet cylinder_flow dataset?

Hi, Recently, I read the paper "Learning Mesh-Based Simulation with Graph Networks" and I am trying to implement some ideas on cylinder_flow dataset. The problem is that I need to know the _density_ and _viscosity_ of the fluid, but I didn't find them in the dataset. Could you tell me the two parameters in the data generation?
Thanks