13 Jul
                
                    2012
                
            
            
                13 Jul
                
                '12
                
            
            
            
        
    
                10:36 p.m.
            
        On Fri, Jul 13, 2012 at 2:25 PM, 
I am wondering why f/sigf is always about twice of i/sigi. Is there any mathematics behind this relation? Maybe it is not directly related to phenix, but i sincerely hope someone could help me with it.
I don't know the logic behind this, but from notes in our code, the default implementation appears to be this one: http://www.iucr.org/__data/iucr/cif/software/xtal/xtal372htmlman/html/addref... specifically, section 4.5.2.4. -Nat