| g13cac | Univariate time series, smoothed sample spectrum using rectangular, Bartlett, Tukey or Parzen lag window |
| g13ccc | Multivariate time series, smoothed sample cross spectrum using rectangular, Bartlett, Tukey or Parzen lag window |
| g13dnc | Multivariate time series, sample partial lag correlation matrices, χ2 statistics and significance levels |