a   b   i x          y          z
pan pan 1 0.34679014 0.72680286 1.34679014
eks pan 2 0.75867996 0.52215111 2.75867996
wye wye 3 0.20460331 0.33831853 3.20460331
eks wye 4 0.38139939 0.13418874 4.38139939
wye pan 5 0.57328892 0.86362447 5.57328892
zee pan 6 0.52712616 0.49322129 6.52712616
eks zee 7 0.61178406 0.18788492 7.61178406
