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<BODY>Dear all,<BR>Why the density map with coeffients |Fobs|-|Fcalc| show the 
density only at half the height,<BR>and&nbsp; with coeffients 2|Fobs|-|Fcalc| 
show the density at full 
height?<BR>Thanks!<BR><BR><BR><BR>        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Breth       <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dingding830106@sina.com 
<BR>          2010-01-15 <BR></BODY></HTML>