{"x":1.5,"e":0.31}
{"x":1.5,"e":1.02}
{"x":2,"e":-1.15}
{"x":2.5,"e":-1.23}
{"x":2.5,"e":0.23}
{"x":3,"e":0.73}
{"x":3.5,"e":-1.36}
{"x":3.5,"e":1.53}
{"x":4,"e":0.07}