a   b   i x                   y
pan new 1 0.3467901443380824  0.7268028627434533
eks new 2 0.7586799647899636  0.5221511083334797
wye new 3 0.20460330576630303 0.33831852551664776
eks new 4 0.38139939387114097 0.13418874328430463
wye new 5 0.5732889198020006  0.8636244699032729
zee new 6 0.5271261600918548  0.49322128674835697
eks new 7 0.6117840605678454  0.1878849191181694
