How to use the xskillscore.crps_gaussian function in xskillscore

"""Computes the CRPS of verification data ``o`` relative to normally distributed
    forecasts with mean ``mu`` and standard deviation ``sig``.

    .. note::
        This is a helper function for CRPSS and cannot be called directly by a user.

    Args:
        forecast (xr.object): Forecast with ``member`` dim.
        mu (xr.object): The mean of the verification data.
        sig (xr.object): The standard deviation verification data.

    See also:
        * properscoring.crps_gaussian
        * xskillscore.crps_gaussian
    """
    return crps_gaussian(forecast, mu, sig)