a   b   i  x             y
pan pan 1  346790.144338 0.726803
eks pan 2  758679.964790 0.522151
wye wye 3  204603.305766 0.338319
eks wye 4  381399.393871 0.134189
wye pan 5  573288.919802 0.863624
zee pan 6  527126.160092 0.493221
eks zee 7  611784.060568 0.187885
zee wye 8  598554.009106 0.976181
hat wye 9  31441.876461  0.749551
pan wye 10 502626.005541 0.952618
