year　1997	
	
week	temperature(℃)
	
1	
2	22.2 
3	22.1 
4	21.7 
5	21.9 
6	22.1 
7	21.8 
8	21.4 
9	21.6 
10	21.6 
11	22.4 
12	22.0 
13	21.5 
14	22.0 
15	21.5 
16	21.8 
17	22.5 
18	22.4 
19	25.2 
20	25.3 
21	24.8 
22	25.3 
23	26.0 
24	25.6 
25	25.8 
26	26.1 
27	25.9 
28	26.8 
29	28.4 
30	26.5 
31	28.1 
32	27.0 
33	26.8 
34	26.1 
35	27.0 
36	27.0 
37	27.1 
38	25.7 
39	26.2 
40	25.7 
41	25.8 
42	25.9 
43	25.5 
44	25.2 
45	24.4 
46	24.7 
47	24.7 
48	25.1 
49	
50	23.5 
51	23.5 
52	23.3