31

28°~20°

1月

28°~19°

2

31°~19°

3

32°~19°

4

30°~19°

5

30°~16°

6

32°~16°

7

33°~16°

8

33°~18°

9

30°~17°

10

28°~18°

11

29°~19°

12

27°~19°

13

29°~15°

14

29°~16°

15

29°~15°

16

29°~15°

17

30°~16°

18

29°~15°

19

29°~15°

20

30°~15°

21

29°~15°

22

29°~15°

23

30°~15°

24

29°~15°

25

30°~15°

26

30°~15°

27

30°~15°

28

30°~15°

29

30°~15°