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