The fluctuations observed during the day:

===============================================================================
                                  Current Session                     Prior Day
           Open    High     Low    Last    Time     Set     Chg     Vol     Set
===============================================================================
Mar'13   81.27    83.03   81.01   82.67    14:30   82.67   1.27   27530   81.40
                                         February 08
May'13  82.30    83.50    81.86   83.30    14:30   83.30   1.02   14036   82.28
                                         February 08
Jul'13   83.05   84.08    82.62   83.97    14:30   83.97   0.92    4938   83.05
                                         February 08
===============================================================================