x1 x2 y
16.85  1.46 41.38
24.81 -4.61 31.01
18.85 -0.21 37.41
12.63  4.93 50.05
21.38 -1.36 39.17
18.78 -0.08 38.86
15.58  2.98 46.14
16.3   1.73 44.47
