year　1998	
	
week	temperature(℃)
	
1	
2	23.4 
3	23.2 
4	22.8 
5	22.3 
6	21.9 
7	22.0 
8	21.9 
9	21.7 
10	21.7 
11	21.8 
12	21.7 
13	21.6 
14	22.1 
15	23.4 
16	23.6 
17	24.2 
18	23.5 
19	24.6 
20	26.0 
21	25.3 
22	25.5 
23	25.8 
24	26.1 
25	26.8 
26	27.0 
27	28.1 
28	29.1 
29	29.0 
30	28.8 
31	28.5 
32	29.1 
33	29.5 
34	29.7 
35	29.3 
36	29.7 
37	28.4 
38	27.6 
39	27.8 
40	27.9 
41	28.0 
42	28.0 
43	27.3 
44	26.8 
45	26.8 
46	26.2 
47	25.5 
48	25.4 
49	25.2 
50	24.4 
51	24.1 
52	23.4