add zbins

[timm]

breaks = {
      2:                         [0],
      3:                  [-0.43,    0.43],
      4:                  [-0.67, 0, 0.67],
      5:            [-0.84,-0.25, 0, 0.25, 0.84],
      6:            [-0.97,-0.43, 0, 0.43, 0.97],
      7:      [-1.07,-0.57,-0.18, 0, 0.18, 0.57, 1.07],
      8:      [-1.15,-0.67,-0.32, 0, 0.32, 0.67, 1.15],
      9:[-1.22,-0.76,-0.43,-0.14,    0.14, 0.43, 0.76, 1.22],
     10:[-1.28,-0.84,-0.52,-0.25, 0, 0.25, 0.52, 0.84, 1.28] }