请问如何在eviews中设定如下这个变量，逐个加总

如如所示，这是作业要求，主要是∑b2+jSeas（j，i）这个怎么处理不明白。



如下是部分数据，希望能尽快得到解答。

week	price	cartel	quantity	seas1	seas2	seas3	seas4	seas5	seas6	seas7	seas8	seas9	seas10	seas11	seas12	ice
1	0.4	1	13632	1	0	0	0	0	0	0	0	0	0	0	0	1
2	0.4	1	20035	1	0	0	0	0	0	0	0	0	0	0	0	1
3	0.4	1	16319	1	0	0	0	0	0	0	0	0	0	0	0	1
4	0.4	1	12603	1	0	0	0	0	0	0	0	0	0	0	0	1
5	0.4	1	23079	0	1	0	0	0	0	0	0	0	0	0	0	1
6	0.4	1	19652	0	1	0	0	0	0	0	0	0	0	0	0	1
7	0.4	1	16211	0	1	0	0	0	0	0	0	0	0	0	0	1
8	0.4	1	22914	0	1	0	0	0	0	0	0	0	0	0	0	1
9	0.4	1	23710	0	0	1	0	0	0	0	0	0	0	0	0	1
10	0.35	1	23036	0	0	1	0	0	0	0	0	0	0	0	0	1
11	0.35	1	38414	0	0	1	0	0	0	0	0	0	0	0	0	1
12	0.35	1	46906	0	0	1	0	0	0	0	0	0	0	0	0	1
13	0.35	1	58608	0	0	0	1	0	0	0	0	0	0	0	0	1
14	0.35	1	51225	0	0	0	1	0	0	0	0	0	0	0	0	1
15	0.35	1	37339	0	0	0	1	0	0	0	0	0	0	0	0	0
16	0.3	1	20298	0	0	0	1	0	0	0	0	0	0	0	0	0
17	0.3	1	13699	0	0	0	0	1	0	0	0	0	0	0	0	0
18	0.3	1	11944	0	0	0	0	1	0	0	0	0	0	0	0	0
19	0.3	1	10658	0	0	0	0	1	0	0	0	0	0	0	0	0
20	0.3	1	9756	0	0	0	0	1	0	0	0	0	0	0	0	0
21	0.3	1	9546	0	0	0	0	0	1	0	0	0	0	0	0	0
22	0.3	1	16713	0	0	0	0	0	1	0	0	0	0	0	0	0
23	0.3	1	16389	0	0	0	0	0	1	0	0	0	0	0	0	0
24	0.3	1	23179	0	0	0	0	0	1	0	0	0	0	0	0	0
25	0.3	1	34999	0	0	0	0	0	0	1	0	0	0	0	0	0
26	0.3	1	35267	0	0	0	0	0	0	1	0	0	0	0	0	0
27	0.3	1	20402	0	0	0	0	0	0	1	0	0	0	0	0	0
28	0.3	1	21020	0	0	0	0	0	0	1	0	0	0	0	0	0
29	0.3	1	16612	0	0	0	0	0	0	0	1	0	0	0	0	0
30	0.3	1	14834	0	0	0	0	0	0	0	1	0	0	0	0	0