a   b   i x          y
pan new 1 0.34679014 0.72680286
eks new 2 0.75867996 0.52215111
wye new 3 0.20460331 0.33831853
eks new 4 0.38139939 0.13418874
wye new 5 0.57328892 0.86362447
zee new 6 0.52712616 0.49322129
eks new 7 0.61178406 0.18788492
