For example, here is a voxel preview of a frame from a simulation of the Gasoline Explosion Quick Setup preset where we are showing only the Smoke channel and see only the voxels where the smoke is between 0.38 39 and 0.5:
Column
width
55%
Section
Column
width
45%
Here is another example of the same cache, but this time we are looking at the velocities between 90 vox/sec and 140 vox/sec: