mass8_41
t	x	y
11.183	-61.616	-90.269
11.247	-41.456	-83.312
11.311	-21.482	-76.306
11.375	-1.645	-69.257
11.439	17.308	-62.279
11.503	35.932	-55.323
11.583	54.431	-48.388
11.647	72.617	-41.356
11.711	90.605	-34.308
11.775	108.297	-27.142
11.839	125.754	-20.134
11.919	137.131	-13.33