cluster_id	sec_channel
0	3
1	1
2	0
3	0
4	0
5	0
6	2
7	0
8	1
9	2
10	1
11	0
12	3
13	2
14	0
15	0
16	1
17	0
18	3
19	3
20	0
21	0
22	0
23	0
24	0
25	0
26	3
27	3
28	2
29	2
30	1
31	3
32	0
33	2
34	2
35	1
36	2
37	3
38	2
39	0
40	3
41	0
42	2
43	0
44	0
45	3
46	0
47	3
48	0
49	1
50	0
51	2
52	0