Stats utils

autocov(ary[, axis])	Compute autocovariance estimates for every lag for the input array.
autocorr(ary[, axis])	Compute autocorrelation using FFT for every lag for the input array.
make_ufunc(func[, n_dims, n_output, ...])	Make ufunc from a function taking 1D array input.
smooth_data(obs_vals, pp_vals)	Smooth data using a cubic spline.
wrap_xarray_ufunc(ufunc, *datasets[, ...])	Wrap make_ufunc with xarray.apply_ufunc.