"time"	"cens"	"group"
9	1	1
13	1	1
13	0	1
18	1	1
23	1	1
28	0	1
31	1	1
34	1	1
45	0	1
48	1	1
161	0	1
5	1	2
5	1	2
8	1	2
8	1	2
12	1	2
16	0	2
23	1	2
27	1	2
30	1	2
33	1	2
43	1	2
45	1	2