The fluctuations observed during the day:

===============================================================================
                                  Current Session                     Prior Day
           Open    High     Low    Last    Time     Set     Chg     Vol     Set
===============================================================================
Oct'12    74.77   74.89   74.50   74.79   14:30   74.79     -0.54   13    75.33
                                         Aug 28
Dec'12    75.95   76.44   75.11   75.62   14:30   75.62     -0.52   8511  76.14
                                         Aug 28
Mar'13    76.51   77.08   75.90   76.41   14:30   76.41     -0.48   847   76.89
                                        Aug 28
===============================================================================