The fluctuations observed during the day:

===============================================================================
                                  Current Session                     Prior Day
           Open    High     Low    Last    Time     Set     Chg     Vol     Set
===============================================================================
Oct'12    74.67   75.00   72.42   72.83   14:30   72.83     -1.45   49    74.28
                                         Sep 12
Dec'12    75.20   75.65   72.75   73.33   14:30   73.33     -1.60  14644  74.93
                                         Sep 12
Mar'13    75.99   76.36   73.60   74.18   14:30   74.18     -1.41   3183  75.59
                                         Sep 12
===============================================================================