The fluctuations observed during the day:

=================================================================================
                                  Current Session                       Prior Day
           Open    High     Low    Last    Time     Set     Chg     Vol       Set
=================================================================================
Mar'15    59.11   59.78   59.10   59.57   14:20    59.57    0.13    16679   59.44
                                          January 29
May'15    59.96   60.63   59.96   60.35   14:20    60.35    0.12     6219   60.23
                                          January 29
Jul'15    60.78   61.49   60.78   61.29   14:20    61.29    0.25      911   61.04
                                          January 29
=================================================================================