mass8_13
t	x	y
2.208	-116.75	108
2.272	-117	97.125
2.336	-121.875	75.375
2.416	-128.375	52
2.48	-134.875	26.375
2.544	-140.375	4
2.608	-147.625	-18.625
2.672	-155.5	-44.125