[Chimera-users] How DMIN, DMAX, DMEAN is re-calculated if particular portion of MRC is chopped in Chimera

Hello, I am a Ph.D. student of Computer Science department at Old Dominion University, USA. I am using Chimera for my research. Can you please tell me how Chimera calculates *DMIN, DMAX, DMEAN *value of MRC header after chopping a portion of original MRC/MAP*?* My understanding about that- *DMIN: T*he minimum density value of the voxels in the MRC/MAP Cube. *DMAX: T*he maximum density value of the voxels in the MRC/MAP Cube. *DMEAN: *The average density of voxels (add all the voxels density value and divide it by the number of voxels). It will be really helpful if you clarify. Thanks Salim Sazzed