| 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 |