mass8_11
t	x	y
1.536	75.349	79.919
1.6	73.335	57.781
1.68	71.319	36.021
1.744	69.32	14.755
1.808	67.382	-6.09
1.872	65.459	-26.455
1.936	63.679	-46.493
2	61.699	-66.019
2.08	60.037	-87.486