Created a histogram with 3 dimensions and 1000 bins
 ... filled with 100000 entries.

eta in [1.5, 2.4), phi in [0, 0.157), E between 10 GeV and 100 GeV
  content = 29
eta in [-1.5, 0), phi in [-0.785, -0.628), E between 1 GeV and 10 GeV
  content = 14