[ccp4bb] Wilson B and Mean B factors

[Vandu Murugan]

Dear all,
     If one could find a difference of more than 15  between Wilson B factor
of the data ( 55) and Mean B factor of the structure, (30) what could be the
possible reasons?  I am seeing it in my structure.  Could someone tell me
why it could be?? Thanks in advance.

Yours faithfully,
Murugan