def normal_h1(size: int = 10000, mean: float = 0, sigma: float = 1) -> Histogram1D:
    """A simple 1D histogram with normal distribution.

    Parameters
    ----------
    size : Number of points
    mean : Mean of the distribution
    sigma : Sigma of the distribution
    """
    data = np.random.normal(mean, sigma, (size,))
    return h1(data, name="normal", axis_name="x", title="1D normal distribution")