cluster_id	sec_channel
0	3
1	0
2	2
3	2
4	1
5	1
6	2
7	1
8	0
9	0
10	0
11	0
12	0
13	2
14	2
15	2
16	2
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	2
25	2
26	0
27	2
28	2
29	0
30	2
31	3
32	1
33	2
34	2
35	2
36	2
37	2
38	2
39	1
40	1
41	0
42	2
43	3
44	1
45	1
46	1
47	0
48	3
49	0
50	1
51	2
52	0
53	2
54	0
55	2