Note:
- This Undulator is marked   S/N 5A06990-31  on the strongback; 
  i.e. it is  S/N 31.
- However the magnet/pole assemblies have Serial Numbers 
  L143-xxxxxx-134 ending in 34 indicating they were intended
  for Undulator 34.

As another Undulator also uses magnet/pole assemblies for an 
undulator already measured, we decide to use the S/N from the
strongback stamp.    Thus, THIS  IS UNDULATOR 31.
Please note that some files in 
S:\MagData\LCLS\Undulator\L143-112000-34\DATASET0001\MECHANICAL MEASUREMENTS\
produced on 2008-03-12 and 2008-03-13
may contain imbedded a reference to Undulator 34, when 31 is meant.