The fluctuations observed during the day:

===============================================================================
                                  Current Session                     Prior Day
           Open    High     Low    Last    Time     Set     Chg     Vol     Set
===============================================================================
Dec'12   71.99   72.84    71.71   72.50   14:30   72.50      0.45  5969   72.05
                                         November 20
Mar'13   72.06   72.87    71.71   72.49   14:30   72.49      0.43  15308  72.06
                                         November 20
May'13   73.15   73.75    72.95   73.34   14:30   73.34      0.34  1369   73.00
                                         November 20
===============================================================================