a   b   i  x          y          i_1_0
pan pan 1  0.34679014 0.72680286 1.00000000
eks pan 2  0.75867996 0.52215111 1.50000000
wye wye 3  0.20460331 0.33831853 2.50000000
eks wye 4  0.38139939 0.13418874 3.50000000
wye pan 5  0.57328892 0.86362447 4.50000000
zee pan 6  0.52712616 0.49322129 5.50000000
eks zee 7  0.61178406 0.18788492 6.50000000
zee wye 8  0.59855401 0.97618139 7.50000000
hat wye 9  0.03144188 0.74955076 8.50000000
pan wye 10 0.50262601 0.95261836 9.50000000
