def norm(table):
    """
    fit to normal distribution
    """
    print('# norm dist is broken', file=sys.stderr)
    exit()
    from matplotlib.pyplot import hist as hist
    t = []
    for i in table:
        t.append(np.ndarray.tolist(hist(i, bins = len(i), normed = True)[0]))
    return t
fit to normal distribution