Interpolated Output

Dear all,
I am currently working in a 3d Jet simulation. I used the 3DGridRefinement code as the base for my simulation, and my grid has 5 refinement Levels.

However, with my current code, the output variables (velocities and pressure), are obtained in the 5-level mesh.

Is there any way of outputting the desired data in an interpolated, regular and uniform mesh?