mass8_29
t	x	y
6.96	-144.51	47.199
7.024	-122.427	63.215
7.088	-98.402	79.474
7.167	-86.512	90.88
7.231	-89.181	99.373
7.295	-92.821	108.109
7.36	-96.218	117.088