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
