| kendr | Kendall regression coefficient |
| kendrs | Kendall regression coefficient for split domains |
| spearr | Spearman regression coefficient |
| spearrs | Spearman regression coefficient for split domains |
| zetac | Zeta dependence coefficient |
| zetaci | Zeta coefficient of piecewise monotonicity with split domain |
| zetapm | Zeta dependence coefficient of piecewise monotonicity |