a : array-like
c : float, optional
The normalization constant. Defined as scipy.stats.norm.ppf(3/4.),
which is approximately .6745.
axis : int, optional
The defaul is 0. Can also be None.
center : callable or float
If a callable is provided, such as the default np.median then it
is expected to be called center(a). The axis argument will be applied
via np.apply_over_axes. Otherwise, provide a float.