The fluctuations observed during the day:

===============================================================================
                                  Current Session                     Prior Day
           Open    High     Low    Last    Time     Set     Chg     Vol     Set
===============================================================================
Dec'12   72.08   72.65    72.08   72.13   14:30   72.65      0.90   19    71.75
                                         November 30
Mar'13   73.24   73.95    73.24   73.91   14:30   73.91      0.56 20020   73.35
                                         November 30
May'13   73.99   74.55    73.99   74.51   14:30   74.51      0.49   1785  74.02
                                         November 30
===============================================================================